Forward moving type forklift truck and manifold block device thereof

Abstract

The utility model discloses a reach forklift and an oil path block device thereof, which comprise a multi-way valve group, an oil path block communicated with the multi-way valve group, a first oil cylinder communicated with the oil path block and a second oil cylinder communicated with the oil path block, two first oil ports are arranged on the first oil cylinder, and two second oil ports are arranged on the second oil cylinder. The multi-way valve set communicates with a first pipeline, the side portion of one end of the oil path block communicates with a plurality of second pipelines, the side portion of the other end of the oil path block communicates with a plurality of third pipelines, the two first oil ports and the two second oil ports communicate with a fourth pipeline, the first pipeline communicates with the second pipelines, and the third pipelines communicate with the fourth pipeline. A first damping screw plug and a second damping screw plug are arranged in the oil path block, and both the first damping screw plug and the second damping screw plug communicate with the third pipeline; according to the device, the first damping screw plug and the second damping screw plug are arranged in the oil path block, so that the oil path liquid resistance of the bending stroke of the pipeline part is reduced, the pipeline connection is simpler, and the oil path space is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reach forklifts, and particularly relates to a reach forklift and an oil circuit block device thereof. Background Art

[0002] In a reach forklift, the lifting action of the reach forklift is executed by an oil cylinder, and the side shifting action and the tilting action are respectively executed by a side shifting cylinder and a tilting cylinder. Due to the limited internal space of the reach forklift, when arranging the pipelines for the oil cylinders, the pipelines are usually bent greatly and the pipeline routing is complex.

[0003] In the prior art, for the 4 oil circuits leading to the side shifting oil cylinder and the tilting oil cylinder of the forklift, the oil pipes led out by the multi-way valve are connected to a damping or throttle valve after passing through a bent hard pipe, and then are connected to the oil cylinder through a section of hard pipe and a section of flexible pipe. The connection mode is as Figure 1 shown. The first oil circuit 200 and the second oil circuit 300 coming out of the multi-way valve 100 are connected. The second oil circuit 300 is a steel pipe. At the same time, due to the equipment space limitation, the second oil circuit 300 is a bent pipe, and the bending angle is usually 180°. When the action requirements of the side shifting cylinder 500 and the tilting cylinder 600 are slow, a throttle valve 4 is usually arranged on the pipeline and then connected to the side shifting cylinder 500 and the tilting cylinder 600 through a flexible pipe. However, this kind of oil circuit arrangement is relatively complex, and additional damping and throttling elements are required. It is necessary to reduce the oil circuit liquid resistance through the bending of the second oil circuit 300. To sum up, there is an urgent need for a convenient and simple reach forklift and an oil circuit block device thereof. Summary of the Utility Model

[0004] To solve some or all of the technical problems existing in the above prior art, on the one hand, the utility model provides an oil circuit block device for a reach forklift, which includes a multi-way valve group, an oil circuit block communicated with the multi-way valve group, a first oil cylinder communicated with the oil circuit block, and a second oil cylinder communicated with the oil circuit block. Two first oil ports are arranged on the first oil cylinder, and two second oil ports are arranged on the second oil cylinder, wherein:

[0005] The multi-way valve group is communicated with a first pipeline. One side part of the oil circuit block is communicated with a plurality of second pipelines, and the other side part is communicated with a plurality of third pipelines. The two first oil ports and the two second oil ports are both communicated with a fourth pipeline. The first pipeline is communicated with the second pipelines, the number of the first pipelines matches the number of the second pipelines, the third pipelines are communicated with the fourth pipeline, the number of the third pipelines matches the number of the fourth pipeline. A first damping plug corresponding to the first oil cylinder and a second damping plug corresponding to the second oil cylinder are arranged in the oil circuit block, and the first damping plug and the second damping plug are both communicated with the third pipeline.

[0006] As a specific implementation manner, in the above oil circuit block device for a reach forklift, the oil circuit block is hermetically connected to the second pipeline and the third pipeline.

[0007] As a specific implementation manner, in the above oil circuit block device for a reach forklift, the number of the second pipelines is 4 to 8.

[0008] As a specific implementation manner, in the above oil circuit block device for a reach forklift, the number of the third pipelines is 4 to 8.

[0009] On the other hand, the present utility model further provides a reach forklift, which includes the above oil circuit block device for a reach forklift.

[0010] The reach forklift and its oil circuit block device of the present utility model have the following advantages and beneficial effects:

[0011] The device has a simple structure and is convenient for disassembly and assembly. By adding an oil circuit block to the original oil circuit and arranging the first damping plug and the second damping plug in the oil circuit block, the original pipeline connection mode is replaced, the liquid resistance of the pipeline part in the bending stroke is reduced, the pipeline connection is more concise, the oil circuit space is saved, and since the first damping plug and the second damping plug are arranged in the oil circuit block, there is no need to additionally add damping throttle elements, which has good safety and practicability. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only for further understanding of the embodiments of the present utility model and constitute a part of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. In the drawings:

[0013] Figure 1 is a schematic diagram of the oil circuit connection mode in the prior art;

[0014] Figure 2 is a schematic structural diagram of the oil circuit block device for a reach forklift of the present utility model.

[0015] Description of the reference numerals:

[0016] 1 - multi-way valve group, 2 - first pipeline, 3 - second pipeline, 4 - oil circuit block, 5 - third pipeline, 6 - fourth pipeline, 7 - first oil cylinder, 8 - second oil cylinder, 100 - multi-way valve, 200 - first oil circuit, 300 - second oil circuit, 400 - throttle valve, 500 - side shift cylinder, 600 - tilt cylinder. Detailed implementation mode

[0017] To make the purpose, technical solution and advantages of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present utility model.

[0018] As Figure 1 、 Figure 2 shown, the present utility model discloses a reach forklift and its oil circuit block device.

[0019] On the one hand, the oil circuit block device for a reach forklift of the present utility model includes a multi-way valve group 1, an oil circuit block 4 connected to the multi-way valve group 1, a first oil cylinder 7 connected to the oil circuit block 4, and a second oil cylinder 8 connected to the oil circuit block 4. The first oil cylinder 7 is an inclination oil cylinder, mainly controlling the inclination action of the reach forklift. The second oil cylinder 8 is a side shift oil cylinder, mainly controlling the side shift action of the reach forklift. Two first oil ports (not shown in the figure) are provided on the first oil cylinder 7. During the normal operation of the first oil cylinder 7, one of the first oil ports is the oil inlet and the other is the oil outlet. Two second oil ports (not shown in the figure) are provided on the second oil cylinder 8. During the normal operation of the second oil cylinder 8, one of the second oil ports is the oil inlet and the other is the oil outlet. Among them, the multi-way valve group 1 is connected to a first pipeline 2. One end side of the oil circuit block 4 is connected to a plurality of second pipelines 3, and the other end side is connected to a plurality of third pipelines 5. The two first oil ports and the two second oil ports are both connected to a fourth pipeline 6. More specifically, the second pipeline 3 and the fourth pipeline 6 are flexible pipelines, and the third pipeline 5 is a rigid pipeline. The first pipeline 2 and the second pipeline 3 are interconnected. The number of the first pipelines 2 matches that of the second pipelines 3. The third pipeline 5 and the fourth pipeline 6 are interconnected. The number of the third pipelines 5 matches that of the fourth pipelines 6. A first damping plug (not shown in the figure) corresponding to the first oil cylinder 7 and a second damping plug (not shown in the figure) corresponding to the second oil cylinder 8 are provided in the oil circuit block 4. The first damping plug and the second damping plug are both connected to the third pipeline 5. During actual use, it is necessary to set the apertures of the first damping plug and the second damping plug according to the specific requirements for the flow rates of the first oil cylinder 7 and the second oil cylinder 8 to meet the need to adjust the flow rate of the hydraulic oil in the first oil cylinder 7 and the second oil cylinder 8.

[0020] As a specific implementation mode, in the oil circuit block device for a reach forklift of the present utility model, the oil circuit block 4 is hermetically connected to the second pipeline 3 and the third pipeline 5. Such a setting prevents the risk of oil leakage during the actual use of the device and improves the overall safety.

[0021] As a specific implementation, in the oil circuit block device for a reach forklift of the present utility model, the number of the second pipelines 3 is 4 to 8, and more specifically, the number of the second pipelines 3 is 4. Of course, the specific number of the second pipelines 3 needs to be set according to the working conditions in the actual use process.

[0022] As a specific implementation, in the oil circuit block device for a reach forklift of the present utility model, the number of the third pipelines 5 is 4 to 8, and more specifically, the number of the third pipelines 5 is 4. Of course, the specific number of the third pipelines 5 needs to be set according to the working conditions in the actual use process.

[0023] On the other hand, the present utility model also provides a reach forklift, and the reach forklift includes the above-mentioned oil circuit block device.

[0024] The working principle of the oil circuit block device for a reach forklift of the present utility model is as follows:

[0025] During the use process, the pressure oil transmitted from an oil pump (not shown in the figure) is regulated in terms of its pressure and flow rate by a multi-way valve group 1, and then is sequentially conveyed to an oil circuit block 4 through a first pipeline 2 and a second pipeline 3. After that, the pressure and flow rate of the pressure oil are regulated by a first damping plug and a second damping plug, and then are sequentially conveyed to a first oil cylinder 7 and a second oil cylinder 8 through a third pipeline 5 and a fourth pipeline 6. Meanwhile, the non-pressure oil output from the first oil cylinder 7 and the second oil cylinder 8 sequentially returns to an oil tank (not shown in the figure) through the fourth pipeline 6, the third pipeline 5, the oil circuit block 4, the second pipeline 3, and the first pipeline 2.

[0026] To sum up, compared with the prior art, the reach forklift and its oil circuit block device of the present utility model have the following advantages and

[0027] beneficial effects:

[0028] The device has a simple structure and is convenient for disassembly and assembly. By adding an oil circuit block 4 in the original oil circuit and arranging the first damping plug and the second damping plug in the oil circuit block 4, the original pipeline connection mode is replaced, the oil liquid resistance of the bending stroke of the pipeline part is reduced, the pipeline connection is made more concise, the oil circuit space is saved, and since the first damping plug and the second damping plug are arranged in the oil circuit block 4, there is no need to additionally increase damping throttle elements, and it has good safety and practicability.

[0029] It should be noted that in this text, unless otherwise clearly specified and defined, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present utility model can be understood according to specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. In addition, in this text, "front", "rear", "left", "right", "upper", "lower", etc. are all referenced to the placement state shown in the drawings.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that: it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An oil circuit block device for a reach forklift, characterized in that, The oil circuit block device for the reach forklift includes a multi-way valve group, an oil circuit block connected to the multi-way valve group, a first oil cylinder connected to the oil circuit block, and a second oil cylinder connected to the oil circuit block. Two first oil ports are provided on the first oil cylinder, and two second oil ports are provided on the second oil cylinder, where: The multi-way valve group is connected to a first pipeline. One side of the oil circuit block is connected to a plurality of second pipelines, and the other side is connected to a plurality of third pipelines. The two first oil ports and the two second oil ports are both connected to a fourth pipeline. The first pipeline and the second pipeline are connected to each other. The number of the first pipelines matches that of the second pipelines. The third pipeline and the fourth pipeline are connected to each other. The number of the third pipelines matches that of the fourth pipelines. A first damping plug corresponding to the first oil cylinder and a second damping plug corresponding to the second oil cylinder are arranged in the oil circuit block. The first damping plug and the second damping plug are both connected to the third pipeline.

2. The oil circuit block device for a reach forklift according to claim 1, characterized in that, The oil circuit block is hermetically connected to the second pipeline and the third pipeline.

3. The oil circuit block device for a reach forklift according to claim 1, characterized in that, The number of the second pipelines is 4 to 8.

4. The oil circuit block device for reach forklift according to claim 1, characterized in that, The number of the third pipelines is 4 to 8.

5. A reach forklift, characterized in that, The reach forklift includes the oil circuit block device according to any one of claims 1-4.

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