A stable support for a cow

Abstract

The utility model relates to the technical field of ground cow, disclose a kind of stable support ground cow, including frame body and two pallet forks, the inside one side of frame body is fixedly arranged with fixed frame, the one side of fixed frame is fixedly arranged with connecting frame, the inside rotation of fixed frame is provided with two-way screw rod, two-way screw rod is externally threadedly connected with two sliding blocks, the inside one side of two the fixed block of pallet fork is fixedly arranged, the inside one side middle part of connecting frame is fixedly arranged with fixed plate.In the utility model, the distance between the pallet forks can be adjusted by the two-way screw rod and the sliding block, and different widths of pallets and goods can be adapted without replacing the ground cow, improving the overall versatility, reducing the overall cost, and the first rotating block and the second rotating block can be folded by the shaft, effectively enhancing the stability of the pallet forks, and the inclination and imbalance of the ground cow can be limited, reducing the risk of goods sliding, damage and personal injury.

Description

Technical Field

[0001] This utility model relates to the field of ground jack technology, and in particular to a stable ground jack. Background Technology

[0002] A pallet loader is a type of transport vehicle, also known as a pallet truck, forklift, or manual hydraulic pallet truck, or simply a pallet loader. It is widely used in workshops, warehouses, docks, stations, and freight yards, and is mainly used for short-distance transport of palletized goods.

[0003] Most existing pallet jacks have narrow lateral support widths. When handling goods with uneven weight distribution, if the goods slip sideways or if lateral load is generated due to centrifugal force during turning, the equipment will bear a large overturning moment. Because the lateral lever arm is short and the vertical lever arm is long, it is easy to cause the whole machine to tilt or even overturn. This may not only cause valuable goods to fall and be damaged, but also threaten the safety of operators, seriously affecting operational safety and efficiency.

[0004] Therefore, those skilled in the art have provided a stable support for the earth ox to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stable pallet jack. Through a two-way lead screw and slider, the fork arm spacing can be adjusted, allowing it to adapt to pallets and goods of different widths without replacing the pallet jack, thus improving overall versatility and reducing overall cost. The first and second rotating blocks can be folded through the pivot, effectively enhancing the stability of the fork arms. Furthermore, it can limit the tilting and imbalance of the pallet jack, reducing the risk of goods slipping, damage, and personal injury.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A stable support pallet jack includes a frame body and two fork arms. A fixed frame is fixedly installed on one side of the frame body, and a connecting frame is fixedly installed on one side of the fixed frame. A bidirectional lead screw is rotatably installed inside the fixed frame, and two sliders are threaded to the outside of the bidirectional lead screw. Each of the two fork arms has a fixed block fixedly installed on one side inside. The connecting frame has a fixed plate fixedly installed in the middle of one side inside. The fixed plate has a rotating shaft rotatably installed at the lower end inside. The rotating shaft has two fixed bars fixedly installed at the upper end. The two fixed bars have second bevel gears slidably installed at their front and rear ends outside. Each of the two fixed blocks has a first bevel gear rotatably installed on one side inside. Each of the two first bevel gears has a drive screw fixedly installed on one side. Each of the two drive screws has a rectangular block threadedly connected to one side outside. Each of the two rectangular blocks has a first rotating block hinged to one side at the opposite end. Each of the two first rotating blocks has a second rotating block hinged to one side at the opposite end.

[0007] Furthermore, the lower ends of both sliders are hinged to one side inside the fork arm, the upper ends of both fork arms are slidably disposed at the lower end of the frame body, and the outer sides of both sliders are slidably disposed at the upper end inside the fixed frame.

[0008] Furthermore, the two first bevel gears are respectively meshed with the two second bevel gears, and the two second bevel gears are respectively rotatably disposed at opposite ends inside the two fixed blocks.

[0009] Furthermore, the two drive screws are rotatably disposed on one side of the fixed block near the rotating shaft, and the two fixed blocks are slidably disposed on the outside of the rotating shaft.

[0010] Furthermore, one side of the connecting frame is rotatably disposed inside the frame body, and the two rectangular blocks are respectively slidably disposed on opposite ends inside the two fork arms.

[0011] Furthermore, the upper ends of the two second rotating blocks are respectively hinged to the upper ends of the two fork arms, and the two drive screws are respectively rotatably disposed on the side of the fork arm away from the rotating shaft, close to the second rotating blocks.

[0012] Furthermore, the two first rotating blocks and the two second rotating blocks are respectively slidably disposed on opposite ends of the two fork arms, and the side of the two fork arms away from the second rotating blocks is sleeved on the outside of the rotating shaft.

[0013] This utility model has the following beneficial effects: 1. The pallet jack proposed in this utility model improves handling stability by rotating the shaft and driving the fixing bar to rotate synchronously. This causes the second bevel gear to drive the first bevel gear meshing with it to rotate, which in turn causes the drive screw to rotate inside the fork arm. This causes the rectangular block to move horizontally on the inner wall of the fork arm, thereby gradually unfolding the rotating block and the second rotating block. The first rotating block and the second rotating block form a stable triangular frame, which can effectively expand the support area and play an auxiliary support role. In addition, it can provide additional support force when the pallet jack tilts slightly, which improves the stability and safety during operation, reduces the risk of goods falling, and the whole operation process is relatively simple.

[0014] 2. The present invention proposes a stable support pallet jack. When it is necessary to adjust the distance between the two fork arms to accommodate pallets or goods of different widths, the bidirectional lead screw is rotated to drive the slider to move horizontally relative to or opposite to each other within the fixed frame. The movement of the slider will synchronously drive the fork arms to move, thereby realizing the adjustment of the distance between the fork arms. This improves the applicability of the pallet jack in multi-variety, small-batch logistics scenarios and enhances its versatility and adaptability. Attached Figure Description

[0015] Figure 1 This is an isometric schematic diagram of the entire utility model; Figure 2 This is a side sectional isometric view of the present invention near the bidirectional lead screw; Figure 3 This is a side sectional isometric view of the present invention near the drive lead screw; Figure 4 This is a partial isometric view of the present invention near the axis of rotation; Figure 5 This is a partial isometric view of the present invention near the first bevel gear.

[0016] Legend: 1. Frame body; 2. Connecting frame; 3. Fixing block; 4. Rotating shaft; 5. Fixing frame; 6. Two-way lead screw; 7. Fork arm; 8. First rotating block; 9. Second rotating block; 10. Fixing plate; 11. Slider; 12. Drive lead screw; 13. Rectangular block; 14. Fixing strip; 15. First bevel gear; 16. Second bevel gear. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1-5 One embodiment provided by this utility model: A stable support pallet jack includes a frame body 1 and two fork arms 7. A fixed frame 5 is fixedly installed on one side of the frame body 1, and a connecting frame 2 is fixedly installed on one side of the fixed frame 5. A two-way lead screw 6 is rotatably installed inside the fixed frame 5, and two sliders 11 are threadedly connected to the outside of the two-way lead screw 6. A fixing block 3 is fixedly installed on one side of each of the two fork arms 7. A fixing plate 10 is fixedly installed in the middle of one side of the connecting frame 2. A rotating shaft 4 is rotatably installed at the lower end of the fixing plate 10. Two fixing strips 14 are fixedly installed at the upper end of the rotating shaft 4. Second bevel gears 16 are slidably installed at both the front and rear ends of the two fixing strips 14. A first bevel gear 15 is rotatably installed on one side of each of the two fixing blocks 3. A drive screw 12 is fixedly installed on one side of each of the two first bevel gears 15. A rectangular block 13 is threadedly connected to one side of each of the two drive screws 12. A first rotating block 8 is hinged to the opposite end of each of the two rectangular blocks 13. A second rotating block 9 is hinged to one side of the opposite end of each of the two first rotating blocks 8. The lower ends of the two sliders 11 are hinged to one side inside the fork arm 7, the upper ends of the two fork arms 7 are slidably mounted on the lower end of the frame body 1, the outer sides of the two sliders 11 are slidably mounted on the upper end inside the fixed frame 5, the two first bevel gears 15 are respectively meshed with the two second bevel gears 16, the two second bevel gears 16 are respectively rotatably mounted on opposite ends inside the two fixed blocks 3, the two drive screws 12 are respectively rotatably mounted on one side inside the fixed block 3 near the rotating shaft 4, the inner sides of the two fixed blocks 3 are slidably mounted on the outer side of the rotating shaft 4, one side of the connecting frame 2 is rotatably mounted on one side inside the frame body 1, and the outer sides of the two rectangular blocks 13 are respectively slidably mounted on opposite ends inside the two fork arms 7. The upper ends of the two second rotating blocks 9 are respectively hinged to the upper ends of the two fork arms 7. The two drive screws 12 are respectively rotatably set on the side of the fork arm 7 away from the rotating shaft 4 and on the side of the fork arm 7 close to the second rotating blocks 9. The two first rotating blocks 8 and the two second rotating blocks 9 are respectively slidably set on the opposite ends of the two fork arms 7. The side of the two fork arms 7 away from the second rotating blocks 9 is sleeved on the outside of the rotating shaft 4. Specifically, when it is necessary to adapt to pallets or goods of different widths, a professional operator can turn the knob at the front end of the bidirectional lead screw 6 to drive the bidirectional lead screw 6 to rotate stably inside the fixed frame 5. Since the bidirectional lead screw 6 is threadedly connected to the two rectangular sliders 11, and the outer wall of the sliders 11 is limited by the inner wall of the fixed frame 5, the sliders 11 are only allowed to slide horizontally and cannot rotate or deviate. The two sliders 11 will move synchronously in opposite directions or relatively horizontally along the axis of the bidirectional lead screw 6. During the sliding process, the upper ends of the two fork arms 7 connected to them will slide smoothly at the lower end of the frame body 1, and finally realize the adjustment of the fork arm 7 spacing to meet the load-bearing requirements of different specifications of goods, reduce the overall adaptation cost, and improve the flexibility of use. The adjustment of the fork arm 7 spacing is mainly for the use of goods with relatively small tonnage but diverse pallet sizes. When the two fork arms 7 move relative to or in opposite directions, the fixing block 3 inside them will move synchronously, so that the fixing block 3 and the second bevel gear 16 inside it slide relative to or in opposite directions outside the rotating shaft 4 and the fixing bar 14. The fixing bar 14 has a rectangular cross section, and the rotating shaft 4 and the fixing bar 14 can provide guidance for the movement of the fork arms 7. To improve stability during handling, a professional operator can turn the knob at the front end of the shaft 4 to make the shaft 4 rotate inside the fixed plate 10, and simultaneously drive the two fixed bars 14 at the top to rotate. Since the inner wall of the second bevel gear 16 is slidably sleeved on the outside of the fixed bars 14 and the shaft 4, the rotation of the shaft 4 will directly drive the second bevel gear 16 to rotate inside the fixed block 3 through the fixed bars 14. Since the second bevel gear 16 is meshed with the first bevel gear 15, the second bevel gear 16 will drive the first bevel gear 15 to rotate inside the fixed block 3, thereby causing the drive screw 12 to rotate inside the fork arm 7. When the drive screw 12 rotates, the rectangular block 13 threaded to it will slide horizontally along the inner wall of the fork arm 7, thereby pushing the first rotating block 8 and the second rotating block 9 to rotate around the hinge point. Since the upper end of the second rotating block 9 is hinged to the upper end of the inside of the fork arm 7, the folding support structure formed by the two gradually unfolds or folds as the rectangular block 13 moves. In the extended state, it can enhance the stability of the pallet jack, provide additional support for the goods, and effectively reduce the tilting of the fork arm 7 due to heavy load or off-center load. Even if the pallet jack tilts unexpectedly, the operator can easily adjust the position of the goods and straighten the pallet jack in time to avoid the risk of goods falling or being damaged due to excessive tilting. It should be noted that the frame body 1 and the forklift arm are existing devices or equipment, or devices or equipment that can be implemented by existing technology. Their functions, specific components and principles are clear to those skilled in the art, so they will not be described in detail. One end of the bidirectional lead screw 6 extends to the outside of the fixed frame 5 and is fixedly connected to an adjustment knob. The knob surface is provided with anti-slip texture to facilitate manual rotation by the operator. Both the bidirectional lead screw 6 and the drive lead screw 12 are made of alloy steel so that they can withstand the lateral tension when the fork arm 7 is adjusted and the radial pressure after the cargo is loaded, avoiding the lead screw from getting stuck or failing due to deformation under force. In addition, the lead screw has a self-locking capability. The fork arm 7 is made of high-strength alloy steel and its surface is hardened to meet load requirements. The surfaces of the first bevel gear 15 and the second bevel gear 16 are coated with lithium-based grease to effectively reduce wear between them and extend their service life, while preventing metal corrosion. The inner hole of the second bevel gear 16 matches the cross section of the rotating shaft 4 and the fixed bar 14, so that it can transmit torque while sliding. The first rotating block 8 and the second rotating block 9 are both made of alloy steel plate. The hinge of the two is connected by a high-strength pin. The two ends of the pin are fixed by cotter pins to prevent them from falling off. The surfaces are coated with epoxy resin anti-rust coating to resist oil corrosion in different scenarios. The bearing surface of the fork arm 7 is equipped with anti-slip rubber pads. The surface of the rubber pads is processed with diamond anti-slip texture to increase the friction with the bottom of the pallet and prevent the pallet from sliding relative to the fork arm 7 during the handling of goods. All standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt mature existing technologies such as bolts, rivets, welding and other conventional methods. Mechanical parts, components and equipment adopt conventional models in the existing technology. Therefore, they will not be described in detail. All contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0019] Working principle: When it is necessary to adjust the distance between the two fork arms 7, the operator rotates the knob at the front end of the double-acting screw 6, which causes the double-acting screw 6 to rotate inside the fixed frame 5. The rotation of the double-acting screw 6 will drive the two sliders 11 connected to it to move in opposite or relatively horizontally on the inner wall of the fixed frame 5, thereby causing the two fork arms 7 to slide synchronously at the lower end of the frame body 1, thus realizing the adjustment of the distance between the fork arms 7. To improve stability during handling, the operator rotates the shaft 4, causing the shaft to rotate inside the fixed plate 10 and simultaneously rotating the two fixed bars 14 at its upper end. The rotation of the shaft 4 drives the second bevel gear 16 to rotate inside the fixed block 3. The rotation of the second bevel gear 16 drives the first bevel gear 15 to rotate, which in turn causes the drive screw 12 to rotate inside the fork arm 7. When the drive screw 12 rotates, the rectangular block 13, which is threaded to it, slides horizontally along the inner wall of the fork arm 7. The movement of the rectangular block 13 pushes the first rotating block 8 and the second rotating block 9 to rotate around the hinge point, so that the folding support structure formed by the first rotating block 8 and the second rotating block 9 gradually unfolds or folds. The unfolded first rotating block 8 and the second rotating block 9 can play a supporting role, which can prevent objects from falling and being damaged due to excessive tilting of the pallet jack.

[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stable ground jack, comprising a frame body (1) and two fork arms (7), characterized in that: A fixed frame (5) is fixedly installed on one side of the frame body (1), and a connecting frame (2) is fixedly installed on one side of the fixed frame (5). A two-way screw (6) is rotatably installed inside the fixed frame (5), and two sliders (11) are threadedly connected to the outside of the two-way screw (6). A fixing block (3) is fixedly installed on one side of each of the two fork arms (7). A fixing plate (10) is fixedly installed in the middle of one side of the connecting frame (2). A rotating shaft (4) is rotatably installed at the lower end of the fixing plate (10). Two fixing strips (14) are fixedly installed at the upper end of the rotating shaft (4). A second bevel gear (16) is slidably installed at both the front and rear ends of the two fixing strips (14). A first bevel gear (15) is rotatably installed on one side of each of the two fixing blocks (3). A drive screw (12) is fixedly installed on one side of each of the two first bevel gears (15). A rectangular block (13) is threadedly connected to one side of each of the two drive screws (12). A first rotating block (8) is hinged to the opposite end of each of the two rectangular blocks (13). A second rotating block (9) is hinged to one side of the opposite end of each of the two first rotating blocks (8).

2. The stable support ground jack according to claim 1, characterized in that: The lower ends of the two sliders (11) are hinged to one side inside the fork arm (7), the upper ends of the two fork arms (7) are slidably disposed at the lower end of the frame body (1), and the outer sides of the two sliders (11) are slidably disposed at the upper end inside the fixed frame (5).

3. The stable support ground jack according to claim 1, characterized in that: The two first bevel gears (15) are respectively meshed with the two second bevel gears (16), and the two second bevel gears (16) are respectively rotatably set at opposite ends inside the two fixed blocks (3).

4. The stable support ground jack according to claim 1, characterized in that: The two drive screws (12) are respectively rotatably disposed on one side of the fixed block (3) near the rotating shaft (4), and the two fixed blocks (3) are slidably disposed on the outside of the rotating shaft (4).

5. A stable support ground jack according to claim 1, characterized in that: The connecting frame (2) is rotatably disposed on one side inside the frame body (1), and the two rectangular blocks (13) are respectively slidably disposed on the opposite ends inside the two fork arms (7).

6. A stable support bull according to claim 1, characterized in that: The upper ends of the two second rotating blocks (9) are respectively hinged to the upper ends of the two fork arms (7), and the two drive screws (12) are respectively rotatably disposed on the side away from the rotating shaft (4) inside the fork arms (7) near the second rotating blocks (9).

7. A stable support ground jack according to claim 1, characterized in that: The two first rotating blocks (8) and the two second rotating blocks (9) are respectively slidably disposed on opposite ends of the two fork arms (7), and the side of the two fork arms (7) away from the second rotating blocks (9) is sleeved on the outside of the rotating shaft (4).

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