Telescopic arm forklift loader

Abstract

The utility model relates to the technical field of vehicles, and particularly discloses a telescopic boom forklift loader which comprises a frame, a telescopic boom, a cab and a lifting mechanism, the telescopic boom, the cab and the lifting mechanism are installed on the frame, the lifting mechanism is connected with the cab and used for controlling the cab to ascend and descend, and in the driving or construction operation process, the telescopic boom is connected with the cab through the lifting mechanism. The height of the cab can be increased through the lifting mechanism, then the visual field range of a driver is expanded, accessories and materials can be conveniently observed when the whole vehicle is loaded and unloaded, the height of the cab can be reduced through the lifting mechanism under the road condition of height limitation, and then the trafficability of the vehicle can be improved. In addition, the middle of one end of the telescopic arm is hinged to the vehicle frame, compared with an existing high movable arm scheme, the height of the whole vehicle can be effectively reduced, the boarding convenience of a driver can be effectively reduced, and compared with an existing low movable arm scheme, the approach angle and off-road performance of the whole vehicle can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a telescopic boom forklift truck. Background Art

[0002] A telescopic boom forklift truck is a multi-purpose forklift truck with off-road functions and a telescopic boom. Structurally, telescopic boom forklift trucks can be divided into fixed type and rotary type. Among them, fixed telescopic boom forklift trucks adopt a structure with the cab arranged on the left side of the vehicle and the telescopic boom arranged in the middle. Since the driver is always on the left side of the whole vehicle, the vision of the right side and the rear side of the whole vehicle is poor, thus affecting driving and construction safety.

[0003] In order to solve the problem of poor vision on the right side and the rear side of the whole vehicle, currently, mainly two technical solutions of high boom and low boom are adopted.

[0004] In the high boom technical solution, the hinge point between the telescopic boom and the vehicle frame is located below the telescopic boom. When arranging the whole vehicle, the height of the cab is selected to be as low as possible. When the vehicle is running, the telescopic boom is lifted appropriately, and the driver can observe from the gap between the lower part of the telescopic boom and the upper part of the vehicle frame. However, because the height of the cab is limited, the operation range of the attachment suspended at the end of the telescopic boom will be blocked by the axle or outrigger part.

[0005] In the low boom technical solution, the hinge point between the telescopic boom and the vehicle frame is located above the telescopic boom. To ensure the driver's vision, the telescopic boom will be lowered as much as possible, and at the same time, the height of the cab will be raised. However, the low boom solution will result in almost no space between the vehicle frame and the telescopic boom, and the size and stroke of the luffing cylinder are also limited accordingly. After the cab is raised, it is inconvenient for the driver to get on and off, and the overall height of the machine is determined by the height of the cab. An overly high cab will also cause the whole machine to be unable to pass through height-limited doors, bridge holes and other spaces with limited height. Content of the Utility Model

[0006] The purpose of the utility model is to provide a telescopic boom forklift truck, which can improve the vision effect of the driver, and further ensure safety during driving and construction.

[0007] To achieve the above purpose, the utility model provides the following technical solution:

[0008] A telescopic boom forklift truck includes a vehicle frame, a telescopic boom and a cab. The telescopic boom and the cab are installed on the vehicle frame. The telescopic boom forklift truck further includes a lifting mechanism installed on the vehicle frame. The lifting mechanism is connected with the cab, and the lifting mechanism is used to control the lifting of the cab. The middle part of one end of the telescopic boom is hinged to the vehicle frame.

[0009] In some embodiments, the lifting mechanism includes a parallelogram link assembly and a telescopic drive assembly. One side of the parallelogram link assembly is connected to the vehicle frame, the side of the parallelogram link assembly away from the vehicle frame is connected to the cab, one end of the telescopic drive assembly is hinged to one of the other two sides of the parallelogram link assembly, and the other end of the telescopic drive assembly is hinged to the vehicle frame.

[0010] In some embodiments, the cab includes a cockpit body, a support member, and a horizontal drive assembly. The support member is connected to one side of the parallelogram link assembly, the cockpit body is movably connected to the support member, the movable end of the horizontal drive assembly is connected to the cockpit body, and the fixed end is connected to the support member. The horizontal drive assembly is used to drive the cockpit body to move horizontally.

[0011] In some embodiments, shock absorbers are provided at the bottom of the cockpit body, and chutes are provided on the support member. The shock absorbers are located within the chutes.

[0012] In some embodiments, the telescopic forklift truck further includes an auxiliary lifting support platform. The auxiliary lifting support platform is installed on the vehicle frame. When the telescopic drive assembly drives the cockpit body to rise or after it has risen, the auxiliary lifting support platform rises to support the cockpit body.

[0013] In some embodiments, a support is provided on the vehicle frame. The support is provided on one side of the vehicle frame. One end of the telescopic arm is hinged to the upper part of the rear end of the vehicle frame, and the parallelogram link assembly and the telescopic drive assembly are installed on the support.

[0014] In some embodiments, a buffer pad is provided on the support for contacting the bottom of the cab.

[0015] In some embodiments, the telescopic forklift truck further includes a rotating support platform. The fixed end of the rotating support platform is connected to the movable end of the horizontal drive assembly, and the cockpit body is installed on the rotating end of the rotating support platform. The rotating support platform is used to drive the cockpit body to rotate in the horizontal plane.

[0016] In some embodiments, the telescopic forklift truck further includes:

[0017] a controller;

[0018] A height detection sensor, which is connected to the controller. The height detection sensor is used to detect the lifting height of the cockpit body. The controller is connected to the height detection sensor and the telescopic drive assembly. The controller is used to control the cockpit body to lift to a target height through the telescopic drive assembly;

[0019] A translation detection sensor, which is connected to the controller. The translation detection sensor is used to detect the translation distance of the cockpit body. The controller is connected to the translation detection sensor and the horizontal drive assembly. The controller is used to control the cockpit body to translate to a target position through the horizontal drive assembly;

[0020] A rotation angle detection sensor, which is connected to the controller. The rotation angle detection sensor is used to detect the rotation angle of the cockpit body. The controller is connected to the rotation angle detection sensor and the rotary support platform. The controller is used to control the cockpit body to rotate to a target angle through the rotary support platform.

[0021] In some embodiments, an obstacle detector is provided around the cockpit body. The obstacle detector is connected to the controller. The obstacle detector is used to detect the surrounding environment information of the cockpit body and send it to the controller.

[0022] Compared with the prior art, the above technical solution has the following advantages:

[0023] For a telescopic forklift truck provided by the present utility model, the lifting mechanism is connected to the cab. The lifting mechanism can control the lifting of the cab. During driving or construction operations, the height of the cab can be increased through the lifting mechanism, thereby expanding the driver's field of vision. When the vehicle is loading and unloading, it is convenient to observe the attachments and materials. In a road condition with a height limit, the height of the cab can be reduced through the lifting mechanism, thereby improving the passing performance of the vehicle. In addition, the middle part of one end of the telescopic arm is hinged to the vehicle frame. Compared with the existing high-boom solution, the height of the whole vehicle and the convenience of the driver getting on the vehicle can be effectively reduced. Compared with the existing low-boom solution, the approach angle and off-road performance of the whole vehicle can be effectively improved. Description of the Drawings

[0024] 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 the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0025] Figure 1Schematic diagram of the structure of a telescopic boom forklift provided by a specific embodiment of the present utility model;

[0026] Figure 2 Schematic diagram of the structure of a telescopic boom forklift when the cab is raised, provided by a specific embodiment of the present utility model;

[0027] Figure 3 Schematic diagram of the structure of a telescopic boom forklift when the cab is raised, provided by another specific embodiment of the present utility model;

[0028] Figure 4 Schematic diagram of the structure of a support member of a telescopic boom forklift provided by a specific embodiment of the present utility model;

[0029] Figure 5 Schematic diagram of the structure of a telescopic boom of a telescopic boom forklift provided by a specific embodiment of the present utility model.

[0030] The reference numerals are as follows:

[0031] 10 is the vehicle frame, 11 is the vehicle frame hinge hole, and 12 is the support;

[0032] 20 is the telescopic boom, and 21 is the telescopic boom hinge hole;

[0033] 30 is the cab, 31 is the cab body, 32 is the support member, and 33 is the horizontal drive assembly;

[0034] 40 is the hinge shaft;

[0035] 50 is the lifting mechanism, 51 is the parallelogram link assembly, and 52 is the telescopic drive assembly. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] Please refer to Figures 1 to 3, a telescopic boom forklift truck provided by an embodiment of the present utility model includes a vehicle frame 10, a telescopic boom 20, a cab 30, and a lifting mechanism 50. The telescopic boom 20, the cab 30, and the lifting mechanism 50 are installed on the vehicle frame 10. Among them, the lifting mechanism 50 is connected to the cab 30, and the lifting mechanism 50 is used to control the lifting of the cab 30. During driving or construction operations, the height of the cab 30 can be increased through the lifting mechanism 50, thereby expanding the driver's field of vision. When the vehicle is loading and unloading, it is convenient to observe the attachments and materials. In road conditions with height restrictions, the height of the cab 30 can be reduced through the lifting mechanism 50, thereby improving the passability of the vehicle. In addition, the middle of one end of the telescopic boom 20 is hinged to the vehicle frame 10. There is a vehicle frame hinge hole 11 on the vehicle frame 10, and a telescopic boom hinge hole 21 is provided in the middle of one end of the telescopic boom 20. The telescopic boom 20 is connected to the vehicle frame 10 through a hinge shaft 40 passing through the vehicle frame hinge hole 11 and the telescopic boom hinge hole 21. Compared with the existing high boom solution, the height of the whole vehicle and the convenience of the driver getting on the vehicle can be effectively reduced. Compared with the existing low boom solution, the approach angle and off-road performance of the whole vehicle can be effectively improved.

[0038] In some embodiments, the lifting mechanism 50 includes a parallelogram link assembly 51 and a telescopic drive assembly 52. The stability of the cab 30 during lifting can be improved through the parallelogram link assembly 51. One side of the parallelogram link assembly 51 is connected to the vehicle frame 10, and the side of the parallelogram link assembly 51 away from the vehicle frame 10 is connected to the cab 30. One end of the telescopic drive assembly 52 is hinged to one of the other two sides of the parallelogram link assembly 51, and the other end of the telescopic drive assembly 52 is hinged to the vehicle frame 10. The telescopic drive assembly 52 can be selected as a telescopic oil cylinder. As Figure 2 shown, the parallelogram link assembly 51 includes a horizontal support rod, a first link, and a second link. There are two horizontally distributed hinge positions at the bottom of the cab 30. One end of the first link is connected to one of the hinge positions, and the other end is hinged to the horizontal support rod. One end of the second link is connected to the other hinge position, and the other end is hinged to the horizontal support rod. One end of the telescopic drive assembly 52 is hinged to the first link or the second link. As Figure 3 shown, the parallelogram link assembly 51 includes a vertical support rod, a first link, and a second link. There are two vertically distributed hinge positions on one side of the bottom of the cab 30. One end of the first link is connected to one of the hinge positions, and the other end is hinged to the vertical support rod. One end of the second link is connected to the other hinge position, and the other end is hinged to the vertical support rod. One end of the telescopic drive assembly 52 is hinged to the first link or the second link. When the telescopic drive assembly 52 extends, it drives the first link and the second link to rotate, thereby raising the cab 30. When the telescopic drive assembly 52 retracts, the cab 30 descends.

[0039] In some embodiments, the cab 30 includes a cab body 31, a support member 32, and a horizontal drive assembly 33. The support member 32 is connected to one side of the parallelogram link assembly 51. The cab body 31 is movably connected to the support member 32. The support member 32 is located at the lower part of the cab body 31. The movable end of the horizontal drive assembly 33 is connected to the cab body 31, and the fixed end is connected to the support member 32. The horizontal drive assembly 33 can be selected as a telescopic oil cylinder. The horizontal drive assembly 33 can drive the cab body 31 to move horizontally to adjust the position of the cab body 31, thereby adjusting the driver's field of vision. In order to improve the comfort of the cab body 31, shock absorbers are provided at the bottom of the cab body 31. Chute grooves are provided on the support member 32, and the shock absorbers are located in the chute grooves. For example, the support member 32 can be selected as a rectangular frame structure. A chute groove is provided on each of the two sides of the support member 32. Two shock absorbers are respectively provided on the front and rear sides of the bottom of the cab body 31. One end of the two shock absorbers on the front side is located in the chute groove, and the other end is connected to the cab body 31. One end of the two shock absorbers on the rear side is located in the chute groove, and the other end is connected to the cab body 31. The shock absorbers can be selected as telescopic springs or other structures that can produce elastic deformation.

[0040] In some embodiments, the telescopic boom forklift further includes an auxiliary lifting support platform. The auxiliary lifting support platform is installed on the vehicle frame 10. The auxiliary lifting support platform can include a support flat plate and a lifting oil cylinder. When the telescopic oil cylinder drives the support flat plate to lift or after lifting, the auxiliary lifting support platform rises to support the cab body 31 to improve the support stability of the cab body 31. When it is necessary to lower the cab body 30, the auxiliary lifting support platform needs to be lowered first, or it can act simultaneously with the telescopic drive assembly 52 to descend synchronously, thereby improving the lifting efficiency of the cab body 31.

[0041] In some embodiments, a support 12 is provided on the vehicle frame 10. The support 12 is provided on one side of the vehicle frame 10. The support 12 can be selected as a channel steel structure fixed on one side of the vehicle frame 10. One end of the telescopic boom 20 is hinged to the upper part of the rear end of the vehicle frame 10. The parallelogram link assembly 51 and the telescopic drive assembly 52 are installed on the support 12. The support 12 facilitates the installation of the parallelogram link assembly 51 and the telescopic drive assembly 52. Among them, a buffer pad is provided on the support 12. The buffer pad is used to contact the bottom of the cab 30 to reduce the wear between the bottom of the cab 30 and the support 12.

[0042] In some embodiments, the telescopic forklift truck further includes a rotating support platform. The fixed end of the rotating support platform is connected to the movable end of the horizontal drive assembly 33, and the cockpit 31 is installed at the rotating end of the rotating support platform. The rotating support platform includes a support platform and a rotating drive assembly. The rotating drive assembly can be a rotating hydraulic motor or an electric motor. The cockpit 31 is installed on the support platform, and the support platform is connected to the rotating drive assembly. The rotating drive assembly can drive the support platform to rotate, and the rotating support platform can drive the cockpit 31 to rotate in the horizontal plane, thereby improving the driver's field of vision.

[0043] In some embodiments, the telescopic forklift truck further includes: a controller, a height detection sensor, a translation detection sensor, and a rotation angle detection sensor. For the specific structures and working principles of the controller, the height detection sensor, the translation detection sensor, and the rotation angle detection sensor, reference can be made to the prior art. In the embodiments of the present invention, they are only applied to the telescopic forklift truck. Among them, the height detection sensor is connected to the controller, and the height detection sensor is used to detect the lifting height of the cockpit 31. The controller is connected to the height detection sensor and the telescopic drive assembly 52, and the controller is used to control the cockpit 31 to lift to the target height through the telescopic drive assembly 52; the translation detection sensor is connected to the controller, and the translation detection sensor is used to detect the translation distance of the cockpit 31. The controller is connected to the translation detection sensor and the horizontal drive assembly 33, and the controller is used to control the cockpit 31 to translate to the target position through the horizontal drive assembly 33; the rotation angle detection sensor is connected to the controller, and the rotation angle detection sensor is used to detect the rotation angle of the cockpit 31. The controller is connected to the rotation angle detection sensor and the rotating support platform, and the controller is used to control the cockpit 31 to rotate to the target angle through the rotating support platform. Through the controller, the height detection sensor, the translation detection sensor, and the rotation angle detection sensor, the position adjustment accuracy and flexibility of the cockpit 31 can be effectively improved, and thus it is applicable to the requirements of various application scenarios.

[0044] In some embodiments, an obstacle detector is provided around the cockpit 31. The obstacle detector can be a distance detector, such as a radar, or the obstacle detector is a camera. The obstacle detector is connected to the controller. The obstacle detector can detect the surrounding environment information of the cockpit 31 and send it to the controller. When there are obstacles around the cockpit 31 that affect its lifting, translation, or rotation, the controller can control the telescopic drive assembly 52, the horizontal drive assembly 33, or the rotating support platform to stop operating, thereby improving the safety of the position adjustment of the cockpit 31.

[0045] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0046] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0047] The above has introduced in detail a telescopic boom forklift truck provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A telescopic arm forklift, comprising a frame (10), a telescopic arm (20) and a cab (30), wherein the telescopic arm (20) and the cab (30) are mounted on the frame (10), characterized in that: It also includes a lifting mechanism (50) mounted on the vehicle frame (10), the lifting mechanism (50) being connected to the cab (30), the lifting mechanism (50) being used to control the lifting and lowering of the cab (30), and the middle portion of one end of the telescopic arm (20) being hinged to the vehicle frame (10).

2. The telescopic forklift according to claim 1, characterized in that: The lifting mechanism (50) comprises a parallelogram connecting rod assembly (51) and a telescopic driving assembly (52), one side of the parallelogram connecting rod assembly (51) is connected to the vehicle frame (10), the side of the parallelogram connecting rod assembly (51) away from the vehicle frame (10) is connected to the cab (30), one end of the telescopic driving assembly (52) is hinged to one of the other two sides of the parallelogram connecting rod assembly (51), and the other end of the telescopic driving assembly (52) is hinged to the vehicle frame (10).

3. The telescopic forklift according to claim 2, characterized in that: The cab (30) comprises a cockpit body (31), a support member (32) and a horizontal drive assembly (33); the support member (32) is connected to one side of the parallelogram connecting rod assembly (51); the cockpit body (31) is movably connected to the support member (32); a movable end of the horizontal drive assembly (33) is connected to the cockpit body (31) and a fixed end is connected to the support member (32); the horizontal drive assembly (33) is used to drive the cockpit body (31) to move horizontally.

4. The telescopic forklift according to claim 3, characterized in that: A shock absorber is provided at the bottom of the cockpit body (31), a slide groove is provided on the support member (32), and the shock absorber is located in the slide groove.

5. The telescopic forklift according to claim 3, characterized in that: It also comprises an auxiliary lifting support platform, the auxiliary lifting support platform being mounted on the vehicle frame (10), and when or after the telescopic drive assembly (52) drives the cockpit body (31) to rise via the parallelogram connecting rod assembly (51), the auxiliary lifting support platform rises to support the cockpit body (31).

6. The telescopic forklift according to claim 2, characterized in that: A support (12) is provided on the vehicle frame (10), the support (12) being arranged on one side of the vehicle frame (10), one end of the telescopic arm (20) being hinged to the upper portion of the rear end of the vehicle frame (10), and the parallelogram connecting rod assembly (51) and the telescopic driving assembly (52) being mounted on the support (12).

7. The telescopic forklift according to claim 6, characterized in that: A buffer pad is provided on the support (12), and the buffer pad is used to contact the bottom of the cab (30).

8. The telescopic forklift according to claim 3, characterized in that: The telescopic arm (20) forklift also includes a rotating support platform, the fixed end of the rotating support platform is connected to the movable end of the horizontal drive assembly (33), the driving cabin body (31) is installed on the rotating end of the rotating support platform, and the rotating support platform is used to drive the driving cabin body (31) to rotate in a horizontal plane.

9. The telescopic forklift according to claim 8, characterized in that: Also includes: Controller; a height detection sensor, the height detection sensor being connected to the controller, the height detection sensor being used to detect the lifting height of the cockpit body (31), the controller being connected to the height detection sensor and the telescopic drive assembly (52), the controller being used to control the cockpit body (31) to be lifted to a target height through the telescopic drive assembly (52); a translation detection sensor, the translation detection sensor being connected to the controller, the translation detection sensor being used to detect the translation distance of the cockpit body (31), the controller being connected to the translation detection sensor and the horizontal drive assembly (33), the controller being used to control the cockpit body (31) to translate to a target position via the horizontal drive assembly (33); A rotation angle detection sensor, the rotation angle detection sensor is connected to the controller, the rotation angle detection sensor is used to detect the rotation angle of the cockpit body (31), the controller is connected to the rotation angle detection sensor and the rotation support platform, and the controller is used to control the cockpit body (31) to rotate to a target angle through the rotation support platform.

10. The telescopic forklift according to claim 9, characterized in that: An obstacle detector is provided around the cockpit body (31), the obstacle detector is connected to the controller, and the obstacle detector is used to detect the surrounding environment information of the cockpit body (31) and send it to the controller.

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