Forklift gantry height warning device

Abstract

The utility model belongs to the technical field of forklift door frames, and particularly discloses a forklift door frame height warning device which comprises an outer door frame, an inner door frame, a supporting plate, a spring, a contact plate, a supporting rod, a trigger block, a button, a buzzer, a contact pad, an undercarriage, a goods blocking frame, a pallet fork, a threaded rod, a chain wheel, a chain, a lifting oil cylinder, an inclined oil cylinder and a connecting relation of the outer door frame, the inner door frame, the supporting plate, the spring, the contact plate, the supporting rod, the trigger block, the button, the buzzer, the contact pad. Through the arrangement of the height warning assembly, when the undercarriage ascends, after a contact pad at the top end of the undercarriage ascends and makes contact with a contact plate, a spring provides buffering for the ascending movement of the contact plate, a trigger block is jacked up to ascend, the trigger block makes contact with a button on the side face, the button is pressed down, a buzzer makes a warning sound, and the warning effect is achieved. And the dangerous situation possibly caused by the fact that the undercarriage ascends too high is avoided.

Description

Technical Field

[0001] This utility model relates to the field of forklift mast technology, and in particular to a forklift mast height warning device. Background Technology

[0002] Forklifts are a commonly used and important piece of equipment in logistics handling and warehousing operations. However, there are often some problems in the traditional use of forklifts. On the one hand, there is a lack of effective warning mechanisms for controlling the height of the forklift mast. In actual operation, the driver may have difficulty accurately judging whether the height of the mast is close to the limit position due to negligence or obstructed vision, which can easily lead to safety accidents. On the other hand, different sizes of goods require forks with different spacing for handling. The fork spacing of traditional forklifts is usually fixed or the adjustment method is cumbersome, which cannot quickly and accurately adapt to the size requirements of various goods. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems existing in the background art. To this end, a forklift mast height warning device is provided.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A forklift mast height warning device includes an outer mast and an inner mast, which are slidably connected vertically. A landing gear is connected to the lower part of the inner mast, and a stop rack is connected to the landing gear. A contact pad is installed at the top of the landing gear. A support plate is installed at the top of the inner mast. A spring is installed below the support plate, and a contact plate is connected below the spring. A support rod is installed in the middle of the contact plate. The support rod passes through the inner ring of the spring and through the support plate, and a trigger block is installed at its top. A button and a buzzer are installed on the inner mast near the trigger block. The button and buzzer are electrically connected. When the contact pad rises and contacts the contact plate, it lifts the trigger block and the trigger block contacts the button.

[0006] The following is a further technical solution of this utility model: two forks are slidably installed on the front side of the rack through a groove. The top of the two forks is threaded to the same threaded rod. A buffer pad is installed in the middle of the threaded rod. The external threads on both sides of the threaded rod are symmetrically arranged about the buffer pad in the middle.

[0007] The following is a further defined technical solution of this utility model: the two ends of the threaded rod are fixedly connected to the adjusting screw.

[0008] The following is a further defined technical solution of this utility model: the contact pad is installed on the upper surface of the landing gear, the support plate has a hole in the middle, the support rod passes through the hole, the two ends of the spring abut against the support plate and the contact plate respectively, the trigger block is located below the button and is installed at the top of the support rod, and the buzzer is located at the corner of the button.

[0009] The following is a further defined technical solution of this utility model: the end of the fork is stuck in the slide groove, the top of the fork is provided with an internal threaded hole, the threaded rod passes through the internal threaded hole, and the buffer pad is located in the middle of the threaded rod.

[0010] The following is a further defined technical solution of this utility model: the landing gear is inserted into the groove of the inner gantry, and the landing gear is connected to the guard rack by screws.

[0011] The following is a further defined technical solution of this utility model: a sprocket is installed on the top of the inner gantry, a chain is installed on the sprocket, and the lower end of the chain is connected to the upper surface of the landing gear.

[0012] The following is a further defined technical solution of this utility model: the outer gantry has a lifting groove inside, the inner gantry is inserted into the lifting groove, the bottom of the outer gantry is provided with a base plate, a lifting cylinder is installed on the base plate, and the top of the output end of the lifting cylinder is connected to the top of the inner gantry.

[0013] The following is a further defined technical solution of this utility model: a connecting clamp is installed on the base plate, and tilting cylinders are installed on both sides of the outer gantry.

[0014] Compared with the prior art, the present invention has the following technical effects:

[0015] 1. This utility model incorporates a height warning component. When the landing gear is raised, the contact pad at the top of the landing gear rises and contacts the contact plate. The spring provides cushioning for the upward movement of the contact plate, lifting the trigger block and causing it to contact the button on the side. When the button is pressed, the buzzer sounds a warning sound, thus preventing potential dangers caused by the landing gear rising too high.

[0016] 2. This utility model is designed so that two forks share the same threaded rod. By rotating the adjusting screw at either end of the threaded rod, the threaded rod and the forks move relative to each other. The two forks slide along the slide groove and move closer or further apart from each other, thereby realizing the adjustment of the distance between the two forks.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 As an embodiment of this utility model Figure 1 A schematic diagram of A in the middle;

[0021] Figure 3 As an embodiment of this utility model Figure 1 A schematic diagram of B in the middle;

[0022] Figure 4 This is a schematic diagram of the overall rear view in an embodiment of this utility model.

[0023] In the diagram: 1. Outer mast; 2. Inner mast; 21. Support plate; 22. Spring; 23. Contact plate; 24. Support rod; 25. Trigger block; 26. Button; 27. Buzzer; 3. Landing gear; 31. Contact pad; 4. Backrest; 41. Forklift; 42. Slide rail; 43. Threaded rod; 44. Adjusting knob; 45. Buffer pad; 5. Sprocket; 51. Chain; 6. Base plate; 61. Lifting cylinder; 62. Connecting clamp; 7. Tilting cylinder. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0027] like Figure 1 As shown, this embodiment provides a forklift mast height warning device, mainly composed of an outer mast 1, an inner mast 2, a height warning assembly (support plate 21, spring 22, contact plate 23, support rod 24, trigger block 25, button 26, buzzer 27, contact pad 31), a lifting frame 3, a stop rack 4, forks 41, threaded rod 43, sprocket 5, chain 51, lifting cylinder 61, and tilting cylinder 7. When the sprocket 5 rotates and drives the chain 51, the lifting frame 3 rises. The contact pad 31 at the top of the lifting frame 3 rises and contacts the contact plate 23, which in turn lifts the trigger block 25, causing it to contact the button 26. When the button 26 is pressed, the buzzer 27 emits a warning sound. Then, by using the lifting cylinder 61 to lift the inner mast 2, the lifting frame 3 can be raised a second time.

[0028] like Figure 1 and 4 As shown, the outer mast 1 and the inner mast 2 are slidably connected vertically. Specifically, the outer mast 1 has a lifting groove inside, and the inner mast 2 is engaged in the lifting groove, allowing the inner mast 2 to slide smoothly up and down within the lifting groove. A base plate 6 is provided at the bottom of the outer mast 1, and a lifting cylinder 61 is mounted on the base plate 6. The top of the output end of the lifting cylinder 61 is connected to the top of the inner mast 2. Therefore, when the output end of the lifting cylinder 61 extends, the inner mast 2 moves upward along the lifting groove; when the output end of the lifting cylinder 61 retracts, the inner mast 2 moves downward along the lifting groove. Furthermore, a connecting clip 62 is installed on the base plate 6 for connecting to a forklift (not shown in the figure). Tilting cylinders 7 are installed on both sides of the outer mast 1, and the other end of the tilting cylinders 7 is mounted on the forklift. The tilting cylinders 7 can adjust the tilt angle of the entire forklift mast to better adapt to the handling and loading / unloading needs of goods in different working scenarios.

[0029] like Figure 1 and 2As shown, the landing gear 3 is engaged in the groove of the inner mast 2 to ensure that there is no shaking or displacement during the lifting process. The landing gear 3 slides up and down along the groove of the inner mast 2. It should be noted that the bottom of the inner mast 2 is in contact with the bottom of the landing gear 3. A contact pad 31 is installed at the top of the landing gear 3. A support plate 21 is installed at the top of the inner mast 2. A spring 22 is installed below the support plate 21. A contact plate 23 is connected below the spring 22. A support rod 24 is installed in the middle of the contact plate 23. The support rod 24 passes through the inner ring of the spring 22 and through the support plate 21, and a trigger block 25 is installed at its top. A button 26 and a buzzer 27 are installed on the inner mast 2 near the trigger block 25. The button 26 and the buzzer 27 are electrically connected. The contact pad 31 is installed on the upper surface of the landing gear 3. The support plate 21 has a hole in the middle. The support rod 24 passes through the hole. The two ends of the spring 22 abut against the support plate 21 and the contact plate 23 respectively. The trigger block 25 is located below the button 26 and is installed on the top of the support rod 24. The buzzer 27 is located at the corner of the button 26. Therefore, when the landing gear 3 rises, the contact pad 31 at the top of the landing gear 3 rises and comes into contact with the contact plate 23. The spring 22 provides a buffer for the upward movement of the contact plate 23, lifting the trigger block 25 and making it contact with the button 26 on the side. At this time, the button 26 is pressed, causing the buzzer 27 to emit a warning sound, avoiding potential dangers caused by the landing gear 3 rising too high. The buzzer 27 is placed at the corner of the button 26, ensuring timely response without hindering the operation of other components. When the landing gear 3 descends, the contact pad 31 at the top of the landing gear 3 descends and separates from the contact plate 23. Under the force of the spring 22, the trigger block 25 resets, separating from the button 26, and the button 26 resets, causing the buzzer 27 to stop emitting a warning sound.

[0030] To achieve the raising or lowering of the landing gear 3, sprockets 5 are installed on both sides of the top of the inner gantry 2 (the sprockets 5 are driven by a motor, which is not shown in this embodiment, and in...). Figure 1 or Figure 4 Only one sprocket 5 is shown, but in the actual product implementation, there are two sprockets 5 arranged symmetrically to ensure the stability of the landing gear 3 during lifting. A chain 51 is mounted on the sprocket 5, and the lower end of the chain 51 is connected to the upper surface of the landing gear 3. Therefore, the motor drives the sprocket 5 to rotate, which in turn drives the chain 51 to transmit power, and the landing gear 3 lifts and lowers along the groove of the inner mast 2.

[0031] like Figure 1 and 3As shown, the landing gear 3 is connected to the guardrail 4 by screws. Two forks 41 are slidably mounted on the front side of the guardrail 4 via a groove 42, providing a crucial support structure for cargo handling. The tops of both forks 41 are threaded to the same threaded rod 43. A buffer pad 45 is installed in the middle of the threaded rod 43, and the external threads on both sides of the threaded rod 43 are symmetrically arranged about the buffer pad 45. The ends of the forks 41 are engaged in the groove 42. An internally threaded hole is provided at the top of the forks 41, through which the threaded rod 43 passes. The buffer pad 45 is located in the middle of the threaded rod 43. Adjustment knobs 44 are fixedly connected to both ends of the threaded rod 43. Therefore, by rotating the adjusting screw 44 at either end of the threaded rod 43, the threaded rod 43 and the fork 41 move relative to each other. The two forks 41 slide along the slide groove 42 and move closer to each other. When the two forks 41 move closer to each other, the buffer pad 45 can prevent the two forks 41 from colliding directly due to over-adjustment. By rotating the adjusting screw 44 of the threaded rod 43 in the opposite direction, the two forks 41 slide along the slide groove 42 and move away from each other, thereby realizing the adjustment of the distance between the two forks 41.

[0032] The working process of this embodiment will be further described below:

[0033] First, the motor drives the sprocket 5 to rotate, which in turn drives the chain 51 to transmit power, causing the landing gear 3 to rise and fall along the groove of the inner mast 2.

[0034] As the landing gear 3 rises, when the landing gear 3 is about to reach its limit position, the contact pad 31 on the landing gear 3 will contact the contact plate 23 below the inner mast 2 and lift it up. The rise of the contact plate 23 will drive the middle support rod 24 to rise synchronously. The trigger block 25 at the top of the support rod 24 will also rise. When the trigger block 25 rises to a certain height, it will press the button 26 on the side. After the button 26 is triggered, the buzzer 27 will sound to warn the driver.

[0035] When the landing gear 3 descends, the elastic action of the spring 22 will pull the contact plate 23 back to its original position, preparing for the next warning.

[0036] When the landing gear 3 needs to be raised to a higher height, the lifting cylinder 61 is activated. The output end of the lifting cylinder 61 extends, and the inner mast 2 moves upward along the lifting groove, thereby driving the landing gear 3 to rise a second time.

[0037] Rotating the adjusting screw 44 at either end of the threaded rod 43 causes the threaded rod 43 and the fork 41 to move relative to each other, and the two forks 41 slide along the slide groove 42 and move closer to each other; rotating the adjusting screw 44 of the threaded rod 43 in the opposite direction causes the two forks 41 to slide along the slide groove 42 and move away from each other, thereby realizing the adjustment of the distance between the two forks 41.

[0038] When it is necessary to adjust the tilt angle of the entire forklift mast, the tilt cylinders 7 on both sides of the outer mast 1 are activated. The output end of the tilt cylinder 7 extends or retracts, changing the angle of the outer mast 1, thereby tilting the entire mast system. The connecting clips 62 on the base plate 6 can connect the forklift to other equipment when needed to meet different work requirements.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A forklift mast height warning device, comprising an outer mast (1) and an inner mast (2), wherein the outer mast (1) and the inner mast (2) are slidably connected vertically, a landing gear (3) is connected below the inner mast (2), and a stop rack (4) is connected to the landing gear (3), characterized in that: A contact pad (31) is installed at the top of the landing gear (3), a support plate (21) is installed at the top of the inner gantry (2), a spring (22) is installed below the support plate (21), a contact plate (23) is connected below the spring (22), a support rod (24) is installed in the middle of the contact plate (23), the support rod (24) passes through the inner ring of the spring (22) and through the support plate (21), and a trigger block (25) is installed at its top. A button (26) and a buzzer (27) are installed on the inner gantry (2) near the trigger block (25). The button (26) and the buzzer (27) are electrically connected. After the contact pad (31) rises and contacts the contact plate (23), it lifts the trigger block (25) and the trigger block (25) contacts the button (26).

2. The forklift mast height warning device according to claim 1, characterized in that, Two forks (41) are slidably installed on the front side of the rack (4) through a groove (42). The top of the two forks (41) is threaded to the same threaded rod (43). A buffer pad (45) is installed in the middle of the threaded rod (43). The external threads on both sides of the threaded rod (43) are symmetrically arranged about the buffer pad (45) in the middle.

3. The forklift mast height warning device according to claim 2, characterized in that, The two ends of the threaded rod (43) are fixedly connected to the adjusting screw (44).

4. The forklift mast height warning device according to claim 1, characterized in that, The contact pad (31) is installed on the upper surface of the landing gear (3). The support plate (21) has a hole in the middle. The support rod (24) passes through the hole. The two ends of the spring (22) abut against the support plate (21) and the contact plate (23) respectively. The trigger block (25) is located below the button (26) and is installed on the top of the support rod (24). The buzzer (27) is located at the corner of the button (26).

5. The forklift mast height warning device according to claim 2, characterized in that, The fork (41) is engaged in the groove (42) at the end. The fork (41) has an internal threaded hole at the top. The threaded rod (43) passes through the internal threaded hole. The buffer pad (45) is located in the middle of the threaded rod (43).

6. The forklift mast height warning device according to claim 1, characterized in that, The landing gear (3) is fitted into the groove of the inner mast (2), and the landing gear (3) is connected to the guardrail (4) by screws.

7. The forklift mast height warning device according to claim 1, characterized in that, The inner mast (2) is equipped with a sprocket (5) on top, and a chain (51) is mounted on the sprocket (5). The lower end of the chain (51) is connected to the upper surface of the landing gear (3).

8. The forklift mast height warning device according to claim 1, characterized in that, The outer gantry (1) has a lifting groove inside, the inner gantry (2) is inserted into the lifting groove, the bottom of the outer gantry (1) is provided with a base plate (6), a lifting cylinder (61) is installed on the base plate (6), and the top of the output end of the lifting cylinder (61) is connected to the top of the inner gantry (2).

9. The forklift mast height warning device according to claim 8, characterized in that, A connecting clamp (62) is installed on the base plate (6), and tilting cylinders (7) are installed on both sides of the outer gantry (1).

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