A forklift and forklift equipped with a scissor mechanism

Abstract

This utility model discloses a forklift with a scissor mechanism, including a fork carriage and a sliding frame. The sliding frame is slidably connected to a mast, and a scissor mechanism is provided between the fork carriage and the sliding frame. The scissor mechanism includes a pair of symmetrically arranged linkages, each linkage including an inner rod and an outer rod hinged to each other. One end of the inner rod and the outer rod is hinged to the sliding frame. One end of one of the inner rods and the outer rod is hinged to the fork carriage, and one end of the other rod is movably connected to the fork carriage. It also includes a drive mechanism, one end of which is hinged to the sliding frame, and the other end is hinged to the linkage mechanism. The forklift with the scissor mechanism of this utility model has a telescopic function, enabling it to retrieve goods deep within the shelving. This utility model also provides a forklift including forks with a scissor mechanism.

Description

Technical Field

[0001] This utility model relates to the field of forklift equipment technology, and in particular to a fork and forklift with a scissor fork mechanism. Background Technology

[0002] In today's society, the logistics industry is developing rapidly, and forklifts are one of the most widely used handling and stacking tools in the logistics industry. Reach trucks, a type of industrial handling vehicle and warehouse forklift, are wheeled transport vehicles capable of loading, unloading, stacking, and short-distance transport of palletized goods. Reach trucks share characteristics with counterbalance forklifts and electric stackers. When the mast is extended to its foremost position, the load center of gravity falls outside the fulcrum, equivalent to a counterbalance forklift; when the mast is fully retracted, the load center of gravity falls inside the fulcrum, equivalent to an electric stacker. This combination of features gives reach trucks the advantages of operational flexibility and high load capacity, while not significantly increasing size and weight, maximizing space savings and greatly improving warehouse space utilization.

[0003] Existing reach trucks rely on the entire mast system to move forward to pick up goods from cantilever or beam racks. However, existing technologies often have situations where the racks are deep and the goods are narrow, with multiple rows of goods placed in a single rack. Since the reach truck moves the entire mast forward, when picking up goods deep in the rack, the forks and even the entire truck are blocked by the rack and the goods on it, preventing further forward movement. In such cases, the reach truck cannot pick up goods deep in the rack, thus limiting its use.

[0004] Therefore, in order to facilitate the forklifting of goods deep within the racks, it is necessary to improve the mast or fork system of existing multi-reach forklifts so that they can reach deep into the racks to forklift goods. Utility Model Content

[0005] This utility model provides a fork with a scissor mechanism. With the cooperation of the scissor mechanism, the fork body on the fork carriage can be moved forward, making it convenient to pick up goods deep in the shelf.

[0006] This utility model also provides a forklift that uses forks with a scissor mechanism to facilitate the retrieval of goods deep inside the rack.

[0007] One technical solution adopted by this utility model is: a fork with a scissor mechanism, including a fork carriage and a sliding frame, wherein the sliding frame is slidably connected to the mast, and a scissor mechanism is provided between the fork carriage and the sliding frame; the scissor mechanism includes a pair of symmetrically arranged linkage mechanisms, each linkage mechanism including an inner rod and an outer rod hinged to each other; one end of the inner rod and the outer rod is hinged to the sliding frame; one end of one of the inner rod and the outer rod is hinged to the fork carriage, and one end of the other rod is movably connected to the fork carriage; it also includes a drive mechanism, one end of which is hinged to the sliding frame, and the other end is hinged to the linkage mechanism.

[0008] The inner rod and the outer rod of the linkage mechanism are hinged at the middle position.

[0009] The fork carriage is connected to the fork body on one side and has a mounting plate on the other side; the mounting plate is provided with a first hinge seat and a sliding groove; one of the inner rods and the outer rods is hinged to the first hinge seat, and one end of the other rod is movably connected to a first slider, which is embedded in the sliding groove.

[0010] The sliding frame is provided with a second hinge seat; one end of the driving mechanism is hinged to the second hinge seat, and the other end of the driving mechanism is hinged to the inner rod or outer rod that is slidably connected to the sliding groove; the driving mechanism pushes the inner rod or outer rod in the linkage to slide up and down along the sliding groove.

[0011] The first slider is hinged to either the inner rod or the outer rod.

[0012] The drive mechanism is one of an oil cylinder, a pneumatic cylinder, or a lead screw motor with a sliding sleeve.

[0013] Another technical solution adopted by this utility model is: a forklift, which is equipped with a fork with a scissor mechanism as described above, and also includes a vehicle body, with a mast body vertically mounted on the vehicle body; an inner mast is nested inside the mast body, and the inner sidewall of the inner mast is formed as a sliding groove; a second slider is provided on the outer sidewall of the sliding frame, and the sliding frame is movably mounted on the inner mast.

[0014] The inner gantry is also equipped with a lifting device, which includes a lifting cylinder mounted on the inner gantry. The top of the lifting cylinder is provided with a fixed seat, and a moving wheel is movably mounted inside the fixed seat. A connecting piece is sleeved on the moving wheel, and both ends of the connecting piece are respectively connected to the sliding frame and the back plate of the inner gantry.

[0015] The connector located inside the inner gantry has a connector head at its tail end, and the sliding frame has a connector seat at its bottom. The sliding frame is fixed to the connector by the cooperation of the connector head and the connector seat.

[0016] The connecting component is a chain, and the driving wheel is a sprocket; or the connecting component is a belt, and the driving wheel is a pulley.

[0017] The beneficial effects of this utility model of a forklift with a scissor mechanism and a forklift are:

[0018] The scissor lift mechanism is a linkage mechanism that can perform extension and retraction operations under the drive mechanism, thereby driving the forks on the fork carriage to extend and retract. After the forklift is in position, it performs a second extension to pick up goods deep in the rack. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the forks with a scissor mechanism of this utility model.

[0020] Figure 2 yes Figure 1 A sectional view along direction AA.

[0021] Figure 3 This is a schematic diagram of the installation of the forks with scissor mechanism on the mast in this utility model.

[0022] Figure 4 This is a schematic diagram of the inner gantry of this utility model.

[0023] Figure 5 yes Figure 4 Another perspective illustration.

[0024] Figure 6 This is a schematic diagram of the forklift of this utility model.

[0025] In the diagram: 1. Mast; 2. Fork carriage; 21. Fork body; 3. Outer rod; 4. Inner rod; 5. Mounting plate; 51. First hinge seat; 52. Sliding groove; 6. Sliding frame; 61. Inner wall of sliding frame; 62. Second hinge seat; 63. Connecting seat; 64. Second slider; 7. Drive cylinder; 8. Back plate; 9. Lifting cylinder; 91. Fixed seat; 911. Drive wheel; 10. Connecting piece; 11. Inner mast; 111. Sliding groove; 12. Vehicle body. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0027] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0028] Furthermore, in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Example 1

[0030] See Figures 1-3 This utility model provides a forklift with a scissor mechanism, including a fork carriage 2 and a sliding frame 6. The sliding frame 6 is slidably connected to the mast 1, and a scissor mechanism is provided between the fork carriage 2 and the sliding frame 6. The scissor mechanism includes a pair of symmetrically arranged linkage mechanisms, each linkage mechanism including an inner rod 4 and an outer rod 3 hinged to each other. One end of the inner rod 4 and the outer rod 3 is hinged to the sliding frame 6. One end of one of the inner rod 4 and the outer rod 3 is hinged to the fork carriage 2, and one end of the other rod is movably connected to the fork carriage 2. That is, when the inner rod 4 and the outer rod 3 are connected to the fork carriage 2, one of the inner rod 4 and the outer rod 3 is hinged and the other is movably connected. It also includes a drive mechanism, one end of which is hinged to the sliding frame 6, and the other end is hinged to the linkage mechanism. The drive mechanism can drive the linkage mechanism to extend and retract.

[0031] The inner rod 4 and the outer rod 3 are hinged at the middle position, and the inner rod 4 and the outer rod 3 can rotate along the hinge point at the middle.

[0032] To facilitate the connection of the inner rod 4 and the outer rod 3 on the fork carriage 2, in Embodiment 1, one side of the fork carriage 2 is connected to the fork body 21, and the other side is provided with a mounting plate 5, such as... Figure 1As shown, the mounting plate 5 is provided with a first hinge seat 51 and a sliding groove 52. One of the inner rod 4 and the outer rod 3 is hinged to the first hinge seat 51, and one end of the other rod is movably connected to a first slider. The first slider is hinged to the inner rod 4 or the outer rod 3, and the first slider is embedded in the sliding groove 52. Therefore, when the drive mechanism pulls the movably connected inner rod 4 or outer rod 3, the inner rod 4 or outer rod 3 can slide up and down along the sliding groove 52. When the other ends of the linkage mechanism (except for the end slidably connected to the sliding groove 52) are all hinged, the linkage mechanism can be pulled to rotate around the middle hinge point of the inner rod 4 and the outer rod 3, thereby driving the extension and retraction of the fork carriage 2. It should be noted that when the inner rod 4 and the outer rod 3 are connected to the mounting plate 5, only one rod needs to be hinged and the other rod needs to be movably connected to achieve this effect. Figure 1 The inner rod 4 is slidably connected to the lower part of the mounting plate 5, and the outer rod 3 is hinged to the first hinge seat 51 of the upper part of the mounting plate 5. The reverse is also possible, that is, the outer rod 3 is slidably connected to the upper part of the mounting plate 5, and the inner rod 4 is hinged to the lower part of the mounting plate 5. The drive mechanism pulls the outer rod 3 to slide up and down.

[0033] The inner rod 4 and the outer rod 3 are hinged to the inner side wall 61 of the sliding frame, and a second hinge seat 62 is provided on the sliding frame 6; one end of the drive mechanism is hinged to the second hinge seat 62, and the other end of the drive mechanism is hinged to the inner rod 4 or the outer rod 3 which is slidably connected to the sliding groove 52; the drive mechanism pushes the inner rod 4 or the outer rod 3 in the linkage to slide up and down along the sliding groove 52.

[0034] The driving mechanism can be one of the following: a hydraulic cylinder 7, a pneumatic cylinder, or a lead screw motor with a sliding sleeve. All three are common pushing mechanisms. In the lead screw motor with a sliding sleeve, a lead screw is connected to the motor's rotating shaft, the sliding sleeve is threaded to the lead screw, and the other end of the sliding sleeve is hinged to a first slider, which slides within a groove 111. The motor drives the lead screw to rotate, thereby causing the sliding sleeve to extend and retract. The structure of the lead screw motor with a sliding sleeve in this embodiment is not shown in the figures, but those skilled in the art can easily deduce it using common knowledge.

[0035] Example 2

[0036] See Figures 3-6 This utility model provides a forklift in embodiment two. The forklift is equipped with a fork with a scissor mechanism as described in embodiment one. The forklift also includes a vehicle body 12, and a mast 1 body is vertically mounted on the vehicle body 12. An inner mast 11 is nested inside the mast 1 body, and the inner sidewall of the inner mast 11 is formed as a sliding groove 111. A second slider 64 is provided on the outer sidewall of the sliding frame 6. The second slider 64 is embedded in the sliding groove 111. The sliding frame 6 is movably mounted on the inner mast 11 and can slide up and down within the inner mast 11, thereby realizing the lifting and lowering operation of the forks.

[0037] To facilitate lifting the forks, a lifting device is provided on the inner mast 11. This lifting device includes a lifting cylinder 9 mounted on the inner mast 11, located inside the front of the inner mast 11. A fixed seat 91 is mounted on top of the lifting cylinder 9, and a movable wheel 911 is movably mounted within the fixed seat 91. A connecting member 10 is sleeved on the movable wheel 911, and both ends of the connecting member 10 are connected to the sliding frame 6 and the back plate 8 on the back of the inner mast 11, respectively. Since one end of the connecting member 10 is fixed to the back plate 8 of the inner mast 11, the movable end of the connecting member 10 can be raised and lowered under the action of the lifting cylinder 9, thereby driving the raising and lowering of the sliding frame 6.

[0038] In this embodiment, the connector 10 is a flexible connector 10. To facilitate the connection between the connector 10 and the sliding frame 6, a connector head is provided at the tail of the connector 10 located inside the inner frame 11. A connecting seat 63 is provided at the bottom of the sliding frame 6. The sliding frame 6 is fixed to the connector 10 through the cooperation of the connector head and the connecting seat 63. Specifically, the connecting seat 63 has multiple slots, and the connecting seat 63 can be inserted into the slots. The connection between the connector head and the connecting seat 63 is completed by a pin.

[0039] The connecting component 10 can be a chain or a belt. When the connecting component 10 is a chain, the driving wheel 911 is a sprocket; when the connecting component 10 is a belt, the driving wheel 911 is a pulley. Chains and sprockets can bear a larger load, while pulleys and belts bear a smaller load but are easier to maintain and replace. The appropriate choice can be made based on actual needs.

[0040] Furthermore, it should be noted that in this specification, "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fork with a scissor mechanism, comprising a fork carriage (2) and a sliding carriage (6) which is in sliding connection with a portal (1), characterized in that, A scissor mechanism is provided between the fork carriage (2) and the sliding frame (6); The scissor mechanism includes a pair of symmetrically arranged linkages, the linkages including an inner rod (4) and an outer rod (3) that are hinged to each other; One end of the inner rod (4) and the outer rod (3) are hinged to the sliding frame (6); one end of one rod of the inner rod (4) and the outer rod (3) is hinged to the fork carriage (2), and one end of the other rod is movably connected to the fork carriage (2); It also includes a drive mechanism, one end of which is hinged to the sliding frame (6) and the other end of which is hinged to the linkage mechanism.

2. A fork with a scissor mechanism according to claim 1, characterized in that, The inner rod (4) and the outer rod (3) of the linkage mechanism are hinged at the middle position.

3. A fork with a shear mechanism according to claim 1, characterized in that The fork carriage (2) is connected to the fork body (21) on one side and has a mounting plate (5) on the other side; The mounting plate (5) is provided with a first hinge seat (51) and a sliding groove (52); One of the inner rod (4) and the outer rod (3) is hinged to the first hinge seat (51), and one end of the other rod is movably connected to a first slider, which is embedded in the sliding groove (52).

4. A fork with a shear mechanism according to claim 3, characterized in that The sliding frame (6) is provided with a second hinge seat (62); One end of the drive mechanism is hinged to the second hinge seat (62), and the other end of the drive mechanism is hinged to the inner rod (4) or the outer rod (3) that is slidably connected to the sliding groove (52); The drive mechanism pushes the inner rod (4) or outer rod 3() in the linkage to slide up and down along the sliding groove (52).

5. A fork with a shear mechanism according to claim 3, wherein, The first slider is hinged to the inner rod (4) or the outer rod (3).

6. A fork with a shear mechanism according to claim 1, wherein, The drive mechanism is one of an oil cylinder, a pneumatic cylinder, or a lead screw motor with a sliding sleeve.

7. A fork truck provided with a fork with a shearing fork mechanism according to any one of claims 1 to 6, characterized in that, It also includes a vehicle body (12), and the mast (1) body is vertically mounted on the vehicle body (12); The gantry (1) body is insulated with an inner gantry (11), and the inner sidewall of the inner gantry (11) is formed as a groove (111); A second slider (64) is provided on the outer wall of the sliding frame (6), and the sliding frame (6) is movably mounted on the inner gantry (11).

8. A fork truck as claimed in claim 7, wherein, The inner gantry (11) is also provided with a lifting device, which includes a lifting cylinder (9) provided on the inner gantry (11). The top of the lifting cylinder (9) is provided with a fixed seat (91), and a moving wheel (911) is movably provided in the fixed seat (91). The connector (10) is sleeved on the moving wheel (911), and the two ends of the connector (10) are respectively connected to the sliding frame (6) and the back plate (8) of the inner gantry (11).

9. A fork truck as claimed in claim 8 wherein, A connector is provided at the tail of the connector (10) located inside the inner gantry (11), and a connecting seat (63) is provided at the bottom of the sliding frame (6). The sliding frame (6) is fixed to the connector (10) by the cooperation of the connector and the connecting seat (63).

10. A fork truck as claimed in claim 8 wherein, The connector (10) is a chain, and the drive wheel (911) is a sprocket; Alternatively, the connecting member (10) may be a belt, and the driving wheel (911) may be a pulley.

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