A tiltlateral device with switching oil circuit

Abstract

The utility model relates to a fork truck accessory technical field discloses a kind of inclined side shifter of switching oil circuit, including fixed frame, the frame of the front frame of being connected with fixed frame movably by side shift oil cylinder, the fixed frame is fixedly connected with the inclination oil cylinder for adjusting the inclination angle of front frame, oil circuit control assembly is installed on the fixed frame, the oil circuit control assembly is respectively with the inclination oil cylinder and side shift oil cylinder intercommunication.The utility model realizes side shift and inclination function by a group of oil circuit switching, reduces a group of oil circuit and accessory cost, optimizes the installation position of oil circuit control assembly, releases field of vision space, improves narrow space operation safety.

Description

Technical Field

[0001] This utility model relates to the field of forklift attachment technology, specifically a tilting side shifter for switching hydraulic circuits. Background Technology

[0002] In recent years, with the automation and intelligent upgrading of the logistics industry, warehousing scenarios have placed higher demands on the integration, lightweighting, and operational safety of forklift attachments. Forklift side shifters, as one of the core attachments of forklifts, are widely used in logistics warehousing, manufacturing, and port transportation. Their main function is to achieve precise insertion and stacking of goods through lateral movement or tilting actions, thereby improving handling efficiency and reducing the intensity of manual operations.

[0003] Existing side shifters typically use multiple independent hydraulic circuits to control lateral and tilting movements separately. For example, two sets of hydraulic lines drive the lateral shift cylinder and the tilt cylinder respectively. Although this can meet basic functional requirements, the need for independent configuration of pipelines, valve blocks, and connecting components for multiple hydraulic circuits leads to structural redundancy, increased material costs, and greater difficulty in installation and maintenance. The pipelines and valve blocks of existing side shifters are usually distributed on both sides of the side shifter, obstructing the driver's view. Especially in narrow spaces or extreme working conditions, it is impossible to observe the position of the fork tips through the side view, posing a safety hazard. If other attachments (such as clamps or swivels) need to be connected, additional hydraulic circuits need to be added temporarily, further complicating the overall hydraulic circuit planning of the vehicle.

[0004] Therefore, there is an urgent need for a side shifter that can meet the side shifting and tilting functions of forklifts, reduce manufacturing costs, and also take into account the openness of vision and functional expandability, so as to meet the diverse needs of modern logistics scenarios. Utility Model Content

[0005] The purpose of this utility model is to provide a tilting lateral shifter for switching oil circuits to solve the problems mentioned in the background art, so as to reduce manufacturing costs and take into account both open field of view and functional expandability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tilting lateral shifter with switching hydraulic circuits includes a fixed frame and a frame-shaped front frame movably connected to the fixed frame via a lateral shift cylinder. A tilting cylinder for adjusting the tilt angle of the front frame is fixedly connected to the fixed frame. An hydraulic circuit control component is installed on the fixed frame and is connected to the tilting cylinder and the lateral shift cylinder respectively.

[0008] As a further embodiment of this utility model: in order to enable the front frame to move laterally and tilt relative to the fixed frame, the lateral displacement cylinder is fixedly connected to the fixed frame, and an tilting shaft is fixedly connected to the upper end face of the lateral displacement cylinder. The upper horizontal plate of the front frame has a groove for fitting the tilting shaft, and the piston rods at both ends of the lateral displacement cylinder abut against the side plates on both sides of the front frame.

[0009] As a further embodiment of this utility model: In order to fix the tilting cylinder on the fixed frame, the fixed frame is formed into a frame structure by an upper crossbeam, a lower crossbeam and two side plates. A middle crossbeam is horizontally installed inside the fixed frame. A support plate is fixedly connected between the middle crossbeam, the lower crossbeam and one side plate of the fixed frame. A limiting part for installing the tilting cylinder is opened on the support plate.

[0010] As a further embodiment of this utility model: in order to increase the contact area between the tilting cylinder and the front frame and simplify maintenance, a connecting block is movably installed at the end of the piston rod of the tilting cylinder, and a pad block that contacts the connecting block is embedded on the inner side wall of the lower cross plate of the front frame.

[0011] As a further embodiment of this utility model: In order to enable the oil circuit control component to switch between the tilting cylinder and the side-shifting cylinder, the oil circuit control component includes a first set of oil circuit interfaces mounted on the upper crossbeam. The first set of oil circuit interfaces is connected to the oil inlet of a solenoid valve for controlling oil circuit switching. The first oil outlet of the solenoid valve is connected to the oil inlet of a balance valve for controlling oil pressure. The oil outlet of the balance valve is connected to the tilting cylinder. The solenoid valve is fixed on the lower end face of the side-shifting cylinder. The second oil outlet of the solenoid valve is directly connected to the side-shifting cylinder.

[0012] As a further embodiment of this utility model: in order to fix the balance valve on the fixed frame, a triangular support plate is installed on the lower crossbeam, and the top of the triangular support plate is fixedly connected to the balance valve.

[0013] As a further embodiment of this utility model: in order to facilitate the expansion and installation of other attachments, a second set of oil circuit interfaces reserved for other attachments is installed on the upper crossbeam.

[0014] As a further embodiment of this utility model: in order to reduce the obstruction of the operator's field of vision by the oil circuit control component and free up working field of vision space, the oil circuit control component is installed as a whole on the fixed frame on the side opposite to the tilting oil cylinder.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model features a novel structure. By using a solenoid valve to switch and connect the side-shifting cylinder and the tilting cylinder, the side-shifter can achieve both side-shifting and tilting functions through a single set of oil circuits, reducing the cost of a separate set of oil circuits and accessories. A balance valve is installed between the oil circuits of the solenoid valve and the tilting cylinder to stabilize the oil circuit pressure, balance the pressure difference, and prevent the front frame from suddenly dropping due to the weight of the cargo, ensuring smooth and controllable tilting action. Since the entire oil circuit control assembly is installed on the same side of the fixed frame, the field of vision on the other side of the fixed frame is freed up, improving working safety in confined spaces. Connecting blocks and pads are provided at the contact point between the tilting cylinder and the front frame, increasing the force-bearing area and facilitating observation of the pad wear for maintenance and replacement, thus reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the first set of oil circuit interfaces of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing frame of this utility model;

[0021] Figure 5 This is a side view of the present invention.

[0022] Figure 6 This is a schematic diagram of the back structure of this utility model;

[0023] In the diagram: 1-Fixed frame, 11-Upper crossbeam, 12-Middle crossbeam, 13-Lower crossbeam, 14-Side plate, 15-Support plate, 151-Limiting part, 16-Triangular support plate, 2-Front frame, 21-Padded block, 3-Side displacement cylinder, 31-Tilting shaft, 4-Tilting cylinder, 41-Connecting block, 5-Oil circuit control assembly, 51-First set of oil circuit interfaces, 52-Second set of oil circuit interfaces, 53-Solenoid valve, 54-Balance valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations.

[0026] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] Please see Figure 1-6 In this embodiment of the present invention, a tilting lateral shifter for switching oil circuits includes a fixed frame 1 and a frame-shaped front frame 2 movably connected to the fixed frame 1 via a lateral shifting cylinder 3. The fixed frame 1 is formed into a frame structure by an upper crossbeam 11, a lower crossbeam 13, and two side plates 14. A middle crossbeam 12 is horizontally welded inside the fixed frame 1. A lateral shifting cylinder 3 is welded to the fixed frame 1. An inclined shaft 31 is welded to the upper end face of the lateral shifting cylinder 3 in the extension direction. A groove for fitting the inclined shaft 31 is provided on the upper cross plate of the front frame 2, so that the front frame 2 can rotate around the inclined shaft 31 within a limited angle range to achieve forward and backward tilting actions. The piston rods at both ends of the lateral shifting cylinder 3 directly abut against the side plates on both sides of the front frame 2, so that the lateral shifting cylinder 3 can drive the front frame 2 to perform reciprocating lateral movement relative to the fixed frame 1 without restricting the rotation of the front frame 2 around the axis.

[0028] A support plate 15 is welded between the middle crossbeam 12, the lower crossbeam 13, and one side plate 14 of the fixing frame 1. A limiting part 151 for mounting the tilting cylinder 4 is provided on the support plate 15. The contour of the limiting part 151 matches the profile of the insertion end of the tilting cylinder 4. In this embodiment, the limiting part 151 is a through hole, allowing the piston rod of the tilting cylinder 4 to abut against the lower crossbeam of the front frame 2 while the tilting cylinder 4 is fixed to the fixing frame 1, enabling the tilting cylinder 4 to drive the front frame 2 to perform reciprocating tilting motion. In this embodiment, the maximum forward tilt of the front frame 2 is 2 degrees, and the maximum backward tilt is 5 degrees. The end of the piston rod of the tilting cylinder 4 is spherical, and a connecting block 41 is provided with a connection to the tilting cylinder. The piston rod end of the tilting cylinder 4 has a matching groove, and the piston rod end of the tilting cylinder 4 is embedded in the groove of the connecting block 41. This ensures that during the tilting process of the front frame 2, the connecting block 41 can rotate relative to the piston rod end of the tilting cylinder 4, so that the connecting block 41 always maintains good contact with the pad block 21, the force is transmitted smoothly, and it adapts to the angle change of the front frame 2. The inner side wall of the lower cross plate of the front frame 2 has a groove, and the pad block 21 is embedded in the groove. The position of the pad block 21 corresponds to the connecting block 41, so that the connecting block 41 is always in contact with the pad block 21 when the front frame 2 is lateral and tilting. The pad block 21 is also easy to maintain and replace, reducing the maintenance cost of the front frame 2.

[0029] The hydraulic circuit control assembly 5 is mounted on the fixed bracket 1. The hydraulic circuit control assembly 5 includes a first set of hydraulic circuit interfaces 51. The upper crossbeam 11 has holes for mounting the first set of hydraulic circuit interfaces 51 on the side away from the tilting cylinder 4. Please refer to [reference needed]. Figure 3 The first set of oil circuit interfaces 51 includes two oil circuit connectors. These connectors, after being connected to pipelines, are responsible for the input and output of hydraulic oil, respectively. The oil circuit connectors pass through holes in the upper crossbeam 11 and are secured to the upper crossbeam 11 with nuts. The first set of oil circuit interfaces 51 is connected to the inlet of a solenoid valve 53 via a pipeline. The solenoid valve 53 is welded to the lower end face of the side-shifting cylinder 3. The first outlet of the solenoid valve 53 is connected to the inlet of a balance valve 54 via a pipeline. The outlet of the balance valve 54 is connected to the tilting cylinder 4 via a pipeline. The second outlet of the solenoid valve 53 is directly connected to the side-shifting cylinder 3. The solenoid valve 53 is in an un-energized state. Solenoid valve 53 is connected to tilting cylinder 4. When solenoid valve 53 is energized, it is connected to side-shifting cylinder 3, allowing solenoid valve 53 to control tilting cylinder 4 and side-shifting cylinder 3 separately by switching oil circuits. A triangular support plate 16 is welded to the lower crossbeam 13 of the fixed frame 1 on the side away from tilting cylinder 4. The top of the triangular support plate 16 is welded to the balance valve 54 for fixing the balance valve 54. The balance valve 54 is connected to solenoid valve 53 and tilting cylinder 4 to balance the pressure difference on both sides, stabilize the oil circuit pressure, and prevent the front frame 2 from suddenly falling due to the weight of the cargo when tilting, ensuring that the tilting action is smooth and controllable.

[0030] The hydraulic control component 5 also includes a second set of hydraulic interfaces 52. The second set of hydraulic interfaces 52 has the same structure and installation method as the first set of hydraulic interfaces 51. The second set of hydraulic interfaces 52 is installed on the side of the first set of hydraulic interfaces 51 that is relatively close to the tilting cylinder 4, and is used to expand other functions of the lateral shifter and provide functional expandability.

[0031] The hydraulic control assembly 5 is installed on the side of the fixed frame 1 that is relatively far from the tilt cylinder 4 (usually the non-primary observation side of the driver, such as the right side when the driver looks at the front frame 2 from the fixed frame 1), which frees up the field of vision on the other side of the fixed frame 1. Especially when working in narrow passages, it makes it easier for the driver to observe the positional relationship between the attachments, goods, and shelves, thus improving operational safety.

[0032] This utility model has a novel structure and stable operation. When in use, the working situation can be observed through the field of vision released by the other side of the oil circuit control component 5 on the fixed frame 1. The side shifter can be moved or tilted according to the placement position of the goods and the stacking requirements. When the solenoid valve 53 is in the non-energized state, the oil inlet of the solenoid valve 53 is connected to the first oil outlet of the solenoid valve 53. At this time, the hydraulic oil forms a passage from the first set of oil circuit interface 51, solenoid valve 53, balance valve 54 to tilting cylinder 4. At this time, the piston rod of tilting cylinder 4 is extended or retracted by operating the valve rod of solenoid valve 53. The connecting block 41 at the end of the piston rod of tilting cylinder 4 drives the front frame 2 to tilt backward or forward around the tilting axis 31 by abutting against the pad block 21 at the lower horizontal plate of the front frame 2. When lateral movement of the lateral shifter is required, the control switch of solenoid valve 53 is turned on, energizing solenoid valve 53. After energization, the oil inlet of solenoid valve 53 is connected to the second oil outlet of solenoid valve 53. At this time, hydraulic oil forms a passage from the first set of oil circuit interface 51, solenoid valve 53 to lateral shift cylinder 3. The piston rod of lateral shift cylinder 3 is moved by the valve stem of solenoid valve 53, thereby driving the front frame 2 to reciprocate lateral movement relative to the fixed frame 1. During this process, relative sliding occurs between connecting block 41 and pad 21. When it is observed that the pad 21 at the lower cross plate of the front frame 2 is worn significantly, the pad 21 is removed from the groove at the lower cross plate of the front frame 2 and replaced.

[0033] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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.

[0034] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A tilting lateral shifter for switching oil circuits, comprising a fixed frame (1) and a frame-shaped front frame (2) movably connected to the fixed frame (1) via a lateral shift cylinder (3), characterized in that: A tilting cylinder (4) for adjusting the tilt angle of the front frame is fixedly connected to the fixed frame (1); an oil circuit control component (5) is installed on the fixed frame (1), and the oil circuit control component (5) is connected to the tilting cylinder (4) and the side-shifting cylinder (3) respectively.

2. The tilting lateral shifter for switching oil circuits according to claim 1, characterized in that: The side-shifting cylinder (3) is fixedly connected to the fixed frame (1). An inclined shaft (31) is fixedly connected to the upper end face of the side-shifting cylinder (3). The upper horizontal plate of the front frame (2) has a groove for fitting the inclined shaft (31). The piston rods at both ends of the side-shifting cylinder (3) abut against the side plates on both sides of the front frame (2).

3. The tilting lateral shifter for switching oil circuits according to claim 1, characterized in that: The fixing frame (1) is formed by the upper crossbeam (11), the lower crossbeam (13) and two side plates (14) forming a frame structure. A middle crossbeam (12) is horizontally installed inside the fixing frame (1). A support plate (15) is fixedly connected between the middle crossbeam (12), the lower crossbeam (13) and one side plate (14) of the fixing frame (1). A limiting part (151) for installing the tilting cylinder (4) is opened on the support plate (15).

4. The tilting lateral shifter for switching oil circuits according to claim 1, characterized in that: The piston rod end of the tilting cylinder (4) is movably mounted with a connecting block (41), and a pad (21) that contacts the connecting block (41) is embedded on the inner side wall of the lower cross plate of the front frame (2).

5. The tilting lateral shifter for switching oil circuits according to claim 3, characterized in that: The oil circuit control assembly (5) includes a first set of oil circuit interfaces (51) installed on the upper crossbeam (11). The first set of oil circuit interfaces (51) is connected to the oil inlet of a solenoid valve (53) for controlling oil circuit switching. The first oil outlet of the solenoid valve (53) is connected to the oil inlet of a balance valve (54) for controlling oil pressure. The oil outlet of the balance valve (54) is connected to the tilting cylinder (4). The solenoid valve (53) is fixed on the lower end face of the side-shifting cylinder (3). The second oil outlet of the solenoid valve (53) is directly connected to the side-shifting cylinder (3).

6. The tilting lateral shifter for switching oil circuits according to claim 5, characterized in that: A triangular support plate (16) is installed on the lower crossbeam (13), and the top of the triangular support plate (16) is fixedly connected to the balance valve (54).

7. A tilting lateral shifter for switching oil circuits according to claim 3, characterized in that: The upper crossbeam (11) is equipped with a second set of oil circuit interfaces (52) reserved for other attachments.

8. The tilting lateral shifter for switching oil circuits according to claim 1, characterized in that: The oil circuit control component (5) is installed on the fixed frame (1) on the side opposite to the tilting cylinder (4).

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