Multi-posture cab and telescopic boom forklift loader

Abstract

The utility model discloses a multi-posture cab and a telescopic boom forklift, which relates to the technical field of forklift equipment, and comprises a connecting rod, a first end of the connecting rod is rotatably connected with a frame, and a second end of the connecting rod is rotatably connected with the bottom surface of the cab; the first end of the first oil cylinder is rotatably connected with the first end of the frame, and the second end of the first oil cylinder is rotatably connected with the bottom surface of the cab; the first end of the second oil cylinder is rotatably connected with the second end of the frame, and the second end of the second oil cylinder is rotatably connected with the second end of the bottom surface of the cab. According to the multi-posture cab and the telescopic boom forklift loader, the technical problems that a cab of an existing telescopic boom forklift loader has many view blind areas and is low in safety and flexibility are solved, and the cab can be adjusted by adjusting the position state and the angle state of the cab; visual field blind areas caused by factors such as different sitting postures, different heights and different working conditions of operators are reduced, and the visual field of the operators is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fork loading equipment, in particular to a multi-position cab and a telescopic boom forklift truck. Background Art

[0002] The telescopic boom forklift truck combines the functions of a crane and a forklift truck, and is widely used in construction sites, municipal engineering, farms, docks, warehouses, mines and other places with a variety of quickly switchable attachments. The working conditions of the telescopic boom forklift truck are complex and there are frequent lifting operations, so there are high requirements for the vision of its cab.

[0003] Most of the existing cabs of telescopic boom forklift trucks are fixed. Affected by the structural safety of the cab itself, there are many vision blind areas in the cab, which cannot meet the vision requirements of the forklift truck, resulting in low safety and flexibility of the forklift truck. On the other hand, when the boom of the telescopic boom forklift truck has a large amplitude change, the operator needs to look up for a long time, increasing fatigue and discomfort. Therefore, a multi-position cab and a telescopic boom forklift truck for solving the above problems are proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-position cab, which solves the technical problems that the cab of the existing telescopic boom forklift truck has many vision blind areas and cannot meet the vision requirements of the forklift truck, resulting in low safety and flexibility of the forklift truck.

[0005] To achieve the above purpose, the utility model provides a multi-position cab, including:

[0006] A vehicle frame for installing the cab;

[0007] A connecting rod, the first end of the connecting rod is rotatably connected to the middle of the vehicle frame, and the second end of the connecting rod is rotatably connected to the first end of the bottom surface of the cab;

[0008] A first oil cylinder, the first end of the first oil cylinder is rotatably connected to the first end of the vehicle frame, and the second end of the first oil cylinder is rotatably connected to the second end of the bottom surface of the cab;

[0009] A second oil cylinder, the first end of the second oil cylinder is rotatably connected to the second end of the vehicle frame, and the second end of the second oil cylinder is rotatably connected to the second end of the bottom surface of the cab.

[0010] Preferably, an angle sensor assembly is provided at the bottom of the cab, and the angle sensor assembly is used to detect the tilt angle of the cab.

[0011] Preferably, a length sensor is provided on the first oil cylinder, and the length sensor is used to detect the telescopic length of the first oil cylinder.

[0012] Preferably, a controller is provided in the cab, and the controller signal connects the angle sensor assembly, the length sensor, the first cylinder and the second cylinder.

[0013] Preferably, a button group is provided on the console, and the button group signal is connected to the controller.

[0014] Preferably, a plurality of first articulated frames are arranged on the top surface of the frame, and the plurality of first articulated frames are respectively hingedly connected to the first end of the first oil cylinder, the first end of the second oil cylinder and the first end of the connecting rod through first pin shafts.

[0015] Preferably, a plurality of second articulated frames are arranged on the bottom surface of the frame, and the plurality of second articulated frames are respectively hingedly connected to the second end of the first oil cylinder, the second end of the second oil cylinder and the second end of the connecting rod through second pin shafts.

[0016] Preferably, the second end of the first oil cylinder and the second end of the second oil cylinder are hingedly connected to the same second articulated frame.

[0017] Preferably, an observation window is provided on the top of the cab, and the observation window is used to assist in observing the status of the cargo.

[0018] A telescopic arm forklift, comprising any of the multi-posture cabs described above.

[0019] Compared with the above background technology, the utility model provides a multi-posture cab, which adjusts the position and angle of the cab by controlling the telescopic stroke of the first cylinder and the second cylinder, so as to reduce the blind spots caused by the operator's different sitting postures, different heights, different working conditions and other factors that cause the change of vision, and effectively improve the operator's vision. In addition, the center of gravity of the cab can move forward and backward relative to the frame, thereby increasing the longitudinal stability of the vehicle when it is overloaded and improving the safety performance of the vehicle. On the other hand, when the cab is flipped to a certain angle, while improving the operator's vision, it further reduces the fatigue and discomfort caused by the operator looking up for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A three-dimensional structural diagram of a multi-posture cab provided by an embodiment of the utility model;

[0022] Figure 2 A schematic plan view of the multi-posture cab provided by the embodiment of the present invention in the initial posture;

[0023] Figure 3 A schematic plan view of the multi-posture cab provided by the embodiment of the present invention in the first posture;

[0024] Figure 4 A schematic plan view of the multi-posture cab provided by the embodiment of the present invention in the second posture;

[0025] Figure 5 A schematic plan view of the multi-posture cab provided by the embodiment of the present invention in the third posture;

[0026] Figure 6 A schematic plan view of the multi-posture cab provided by the embodiment of the present invention in the fourth posture;

[0027] Figure 7 A schematic plan view of the multi-posture cab provided by the embodiment of the present invention in the fifth posture.

[0028] Specifically, 1 - cab; 2 - vehicle frame; 3 - first oil cylinder; 4 - second oil cylinder; 5 - connecting rod; 6 - observation window. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] In order to enable those skilled in the art in the technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0031] As Figure 1 shown, a multi-posture cab 1 includes: a vehicle frame 2, a connecting rod 5, a first oil cylinder 3, and a second oil cylinder 4. Among them, the vehicle frame 2 is parallel to the ground, that is, the vehicle frame 2 is placed horizontally as a whole, and the cab 1 is installed above the vehicle frame 2.

[0032] Specifically, the middle part of the vehicle frame 2 is rotatably connected to the lower end of the connecting rod 5, and the upper end of the connecting rod 5 is rotatably connected to the bottom surface of the cab 1 and is located at the left end of the cab 1. Among them, two connecting rods 5 are specifically provided, and the lower ends of the two connecting rods 5 are both connected to the top surface of the vehicle frame 2.

[0033] The left end of the vehicle frame 2 is rotatably connected to the lower end of the first oil cylinder 3, and the upper end of the first oil cylinder 3 is rotatably connected to the right end of the bottom surface of the cab 1; the right end of the vehicle frame 2 is rotatably connected to the lower end of the second oil cylinder 4, and the upper end of the second oil cylinder 4 is rotatably connected to the right end of the bottom surface of the cab 1. Among them, a control console is arranged in the cab 1, and the telescopic stroke of the first oil cylinder 3 and the telescopic stroke of the second oil cylinder 4 are controlled through the control console.

[0034] An angle sensor assembly is arranged at the bottom of the cab 1. Specifically, the angle sensor assembly includes a first angle sensor arranged at the bottom of the cab 1 and a second angle sensor arranged on the top surface of the vehicle frame 2. The first angle sensor and the second angle sensor cooperate to obtain the included angle between the bottom surface of the cab 1 and the top surface of the vehicle frame 2, that is, the inclination angle of the cab 1 is detected, so as to facilitate the control console to accurately control the telescopic stroke of the first oil cylinder 3 and the second oil cylinder 4. In addition, a length sensor is arranged on the first oil cylinder 3, and the length sensor is used to detect the telescopic length of the first oil cylinder 3.

[0035] It should be noted that a controller (not shown in the figure) is arranged in the cab 1. The controller is signal-connected to the angle sensor assembly, the length sensor, the first oil cylinder 3 and the second oil cylinder 4. The controller controls the telescopic stroke of the first oil cylinder 3 through a first solenoid valve (not shown in the figure) according to the data information fed back by the angle sensor assembly and the length sensor, and controls the telescopic stroke of the second oil cylinder 4 through a second solenoid valve (not shown in the figure). A button group (not shown in the figure) is arranged on the control console. The button group includes: a first button, a second button, a third button, a fourth button, a fifth button and a sixth button arranged on the control console. The first button, the second button, the third button, the fourth button, the fifth button and the sixth button are all signal-connected to the controller.

[0036] The specific use process is as follows:

[0037] As Figure 2 shown, when the total length of the second oil cylinder 4 and the total length of the connecting rod 5 are equal, and the total length of the first oil cylinder 3 is the shortest, the cab 1 is in the initial posture. At this time, the difference between the first angle sensor and the second angle sensor is 0. This position is the position of the existing fixed cab 1. In this posture, there are different visual blind areas of the cab 1 under different working conditions. At this time, the front and rear fields of vision of the cab 1 are directly in front and directly behind, which is suitable for transferring forklift trucks in open areas. Press the first button, and the activation signal is transmitted to the controller. The controller outputs a signal and transmits it to the first solenoid valve. The flipping angle of the cab 1 is fed back in real time through the difference between the first angle sensor and the second angle sensor, so as to control the telescopic stroke of the second oil cylinder 4 until the cab 1 reaches the horizontal position. Then, when the first oil cylinder 3 contracts to the total length, the initial posture is reached.

[0038] As Figure 3As shown, in the condition where the boom is fully retracted and horizontally placed, when the cab 1 is in the initial posture, the driver cannot observe the tips of the forks when forklifting goods. The front view of the cab 1 is blocked, presenting a certain risk in goods transportation. Press the second button, and the activation signal is transmitted to the controller. The controller outputs a signal to the second solenoid valve. The total length of the first cylinder 3 remains unchanged. The controller controls the total length of the second cylinder 4 to extend through the second solenoid valve. The cab 1 gradually flips from the position in the initial posture to the position in the first posture. At this time, the driver in the cab 1 can overlook the tips of the forks, effectively expanding the front view of the cab 1 and improving the safety during the operation of the telescopic forklift.

[0039] It should be noted that when the difference between the first angle sensor and the second angle sensor is 0 and the total length of the first cylinder 3 is at the shortest, that is, when the cab 1 is in the initial posture, press the second button. The activation signal reaches the controller. The controller outputs a signal to the solenoid valve to control the second cylinder 4 to extend until the difference between the first angle sensor and the second angle sensor reaches the maximum, and then the cab 1 can reach the position in the first posture.

[0040] As Figure 4 shown, when the cab 1 is in the position in the initial posture, press the third button. The activation signal is transmitted to the controller. The controller outputs a signal to the first solenoid valve. The controller controls the total length of the first cylinder 3 to extend through the first solenoid valve. The length of the second cylinder 4 remains unchanged. The cab 1 gradually translates from the position in the initial posture to the position in the second posture. At this time, the center of gravity of the cab 1 moves backward, causing a part of the load on the front axle to be transferred to the rear axle under the heavy-load condition of the forklift, improving the driving safety of the forklift and capable of enhancing the load-bearing capacity under extreme conditions to a certain extent. On the other hand, since the cab 1 moves upward, the view of the cab 1 is further enlarged, thus solving the problem of poor visibility in most working conditions.

[0041] As Figure 5 shown, when the cab 1 is in the position in the second posture, press the fourth button. The activation signal is transmitted to the controller. The controller outputs a signal to the second solenoid valve. The controller controls the total length of the second cylinder 4 to extend through the second solenoid valve. The total length of the first cylinder 3 remains unchanged. The cab 1 gradually flips from the position in the second posture to the position in the third posture. At this time, on the basis of the upward translation of the cab 1, the driver in the cab 1 can further overlook the tips of the forks, further enabling the cab 1 to obtain a broader view in the lower front area.

[0042] As Figure 6As shown in the figure, when the cab 1 is in the second or third posture position, press the fifth button, and the activation signal is transmitted to the controller. The controller outputs a signal to the second solenoid valve. The controller controls the shortening of the total length of the second oil cylinder 4 through the second solenoid valve, and the total length of the first oil cylinder 3 remains unchanged. The cab 1 gradually flips from the third posture position to the fourth posture position. At this time, the driver in the cab 1 can look down at the rear of the cab 1, that is, a wider view can be obtained below the rear of the cab 1.

[0043] When the boom luffing angle reaches the maximum, that is, when the goods at the fork tip are at a high point, the driver needs to look up to see the fork position, and the top plate will block part of the view. At this time, by flipping the cab 1 to the fourth posture position, the view of the cab 1 can be improved to a certain extent.

[0044] As Figure 7 shown in the figure, preferably, when the cab 1 is in the fourth posture position, press the sixth button, and the activation signal is transmitted to the controller. The controller outputs a signal to the first solenoid valve. The controller controls the shortening of the total length of the first oil cylinder 3 through the first solenoid valve, further increasing the flipping angle of the cab 1. The operator can see the fork through the front windshield without looking up. While having a more comfortable sitting posture in the cab 1, a better view can be obtained.

[0045] Among them, the first oil cylinder 3, the second oil cylinder 4 and the vehicle frame 2 are combined to form a triangular shape. Utilizing the better stability of the triangular structure, changing the triangular shape formed by the combination of the first oil cylinder 3, the second oil cylinder 4 and the vehicle frame 2, that is, changing the lengths of the first oil cylinder 3 and the second oil cylinder 4, realizes the conversion of various postures of the cab 1.

[0046] Several first hinge frames are arranged on the top surface of the vehicle frame 2. The several first hinge frames are respectively hinged to the lower ends of the first oil cylinder 3, the lower end of the second oil cylinder 4 and the lower end of the connecting rod 5 through the first pin shafts. Several second hinge frames are arranged on the bottom surface of the vehicle frame 2. The several second hinge frames are respectively hinged to the upper ends of the first oil cylinder 3, the upper end of the second oil cylinder 4 and the upper end of the connecting rod 5 through the second pin shafts. The first oil cylinder 3, the second oil cylinder 4 and the connecting rod 5 are connected through the first hinge frames and the second hinge frames to ensure the normal operation transformation of the overall connecting rod 5 mechanism, and effectively improve the flexibility of adjusting each posture of the cab 1.

[0047] In addition, the upper ends of the first oil cylinder 3 and the second oil cylinder 4 are hinged to the same second hinge frame. Specifically, the upper ends of the first oil cylinder 3 and the second oil cylinder 4 are coaxially arranged, further ensuring the normal operation transformation of the overall connecting rod 5 mechanism.

[0048] In an embodiment of the present utility model, an observation window 6 is opened at the top of the cab 1. The observation window 6 is used to assist in observing the state of the goods, ensuring that the driver can obtain a wider field of vision and improving the safety during the operation of the telescopic forklift truck.

[0049] It should be noted that according to the preset program, the controller can respectively make the cab directly reach the positions corresponding to the initial posture, the first posture, the second posture, the third posture, the fourth posture, and the fifth posture by pressing the first button, the second button, the third button, the fourth button, the fifth button, and the sixth button.

[0050] Of course, the initial posture can also be used as the intermediate posture. After pressing the first button, the cab 1 returns to the position of the initial posture, and then reaches the positions corresponding to the first posture, the second posture, the third posture, the fourth posture, and the fifth posture respectively from the initial posture according to the above steps.

[0051] In summary, by controlling the telescopic strokes of the first oil cylinder 3 and the second oil cylinder 4, the position state and the angle state of the cab 1 are adjusted, effectively reducing the blind areas caused by factors such as different sitting postures, different heights, and different working conditions of the operator, and improving the field of vision of the operator.

[0052] In addition to the above multi-posture cab 1, the present utility model also provides a telescopic forklift truck including the multi-posture cab 1 disclosed in the above embodiment. For the structures of other parts of the telescopic forklift truck, reference can be made to the prior art and will not be elaborated herein.

[0053] 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.

[0054] Specific examples are used in this article 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 pointed out that for those of ordinary skill in the art in this technical field, 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 present utility model.

Claims

1. A multi-posture cab, characterized in that, Comprising: A vehicle frame for mounting a cab; A connecting rod, the first end of the connecting rod being rotatably connected to the middle of the vehicle frame, and the second end of the connecting rod being rotatably connected to the first end of the bottom surface of the cab; A first oil cylinder, the first end of the first oil cylinder being rotatably connected to the first end of the vehicle frame, and the second end of the first oil cylinder being rotatably connected to the second end of the bottom surface of the cab; A second oil cylinder, the first end of the second oil cylinder being rotatably connected to the second end of the vehicle frame, and the second end of the second oil cylinder being rotatably connected to the second end of the bottom surface of the cab.

2. The multi-posture cab according to claim 1, characterized in that, An angle sensor assembly is provided at the bottom of the cab, and the angle sensor assembly is used to detect the tilt angle of the cab.

3. The multi-posture cab according to claim 2, characterized in that, A length sensor is provided on the first oil cylinder, and the length sensor is used to detect the telescopic length of the first oil cylinder.

4. A multi-posture cab according to claim 3, characterized in that, A controller is provided inside the cab, and the controller is signal-connected to the angle sensor assembly, the length sensor, the first oil cylinder and the second oil cylinder.

5. A multi-posture cab according to claim 4, characterized in that, A key group is arranged on the console, and the key group is signal-connected to the controller.

6. A multi-posture cab according to any one of claims 1-5, characterized in that, A plurality of first hinge brackets are arranged on the top surface of the vehicle frame, and the plurality of first hinge brackets are respectively hinged to the first end of the first oil cylinder, the first end of the second oil cylinder and the first end of the connecting rod through first pin shafts.

7. A multi-posture cab according to claim 6, characterized in that, A plurality of second hinge brackets are arranged on the bottom surface of the vehicle frame, and the plurality of second hinge brackets are respectively hinged to the second end of the first oil cylinder, the second end of the second oil cylinder and the second end of the connecting rod through second pin shafts.

8. A multi-posture cab according to claim 7, characterized in that, The second end of the first oil cylinder and the second end of the second oil cylinder are hinged to the same second hinge bracket.

9. A multi-posture cab according to any one of claims 1-5, characterized in that, An observation window is opened at the top of the cab, and the observation window is used to assist in observing the state of the goods.

10. A telescopic boom forklift truck, characterized in that, Including the multi-posture cab according to any one of the above claims 1-9.

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