Hand-pulled hydraulic vehicle capable of preventing toppling

Abstract

The utility model provides an anti-toppling hand-pulled hydraulic vehicle which comprises a vehicle frame, and the vehicle frame comprises a first idler wheel located at the front end of the vehicle frame and a second idler wheel located at the rear end of the vehicle frame. The ends of the supporting arms are connected with rotatable third rolling wheels through mounting plates, included angles are formed between the mounting plates and the supporting arms, the included angles are acute angles, and the first rolling wheel is located between the two third rolling wheels; and the two adjusting assemblies are arranged on the frame and correspond to the supporting arms, the adjusting assemblies are connected with the ends, away from the mounting plate, of the supporting arms, and the adjusting assemblies drive the supporting arms to move, so that the height from the third rolling wheel to the ground is adjusted, and the hand-pulled hydraulic vehicle is supported. The hand-pulled hydraulic vehicle capable of preventing toppling solves the technical problem that a front universal wheel structure which is singly designed in the prior art is prone to rollover when a vehicle body turns or meets terrain changes.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic vehicle technology, specifically to a hand-operated hydraulic vehicle designed to prevent tipping. Background Technology

[0002] Hand-operated hydraulic trolleys are widely used in modern logistics and production sites, especially in the handling of heavy objects. Their hydraulic systems allow the base plate to enter under the goods and lift them, thereby reducing the labor intensity of manual handling. However, existing hand-operated hydraulic trolley designs typically only have one front swivel wheel. When turning or encountering changes in terrain, they are prone to tilting and losing balance, leading to the trolley tipping over, goods scattering, or creating safety hazards.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a hand-operated hydraulic truck that prevents tipping, so as to solve the technical problem that the single-designed front universal wheel structure in related technologies is prone to tipping over when the vehicle body turns or encounters changes in terrain.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: A hand-operated hydraulic trolley for preventing tipping is provided, comprising: a frame, the frame including a first roller at the front end and a second roller at the rear end; two support arms, the ends of which are connected to rotatable third rollers via mounting plates, the mounting plates and support arms forming an acute angle, the first roller being located between the two third rollers; and two adjusting components, the two adjusting components being mounted on the frame and corresponding to each support arm, the adjusting components being connected to the end of the support arm furthest from the mounting plate, the adjusting components driving the support arms to move, thereby adjusting the height of the third rollers from the ground to support the hand-operated hydraulic trolley.

[0006] Furthermore, the frame is also equipped with a triangular frame, which includes a base plate and two side plates. The two side plates extend upward from both sides of the base plate and form an equal angle with the base plate. The movement direction of the two support arms is parallel to the corresponding side plates.

[0007] Furthermore, the adjustment assembly includes a sleeve and an adjustment member. The sleeve is fixed to the side plate, and the adjustment member is connected to the support arm. The connection between the adjustment member and the support arm is located inside the sleeve. Driving the adjustment member to move causes the support arm to move, thereby changing the length of the support arm extending out of or entering the sleeve.

[0008] Furthermore, the adjusting component is a screw with external threads, and a fixed plate is provided inside the sleeve. The screw passes through the fixed plate and is rotatably set relative to the fixed plate. The connection between the support arm and the screw is provided with an internal thread that matches the external thread. Rotating the screw in the forward or reverse direction causes the threaded transmission to be converted into the linear motion of the support arm, thereby allowing the support arm to extend and retract within the sleeve.

[0009] Furthermore, the adjustment assembly also includes a crank handle and a first bevel gear. The crank handle passes through the sleeve and is connected to the first bevel gear. Turning the crank handle causes the first bevel gear to rotate inside the sleeve. The end of the screw away from the support arm is provided with a second bevel gear that meshes with the first bevel gear. Rotating the second bevel gear causes the screw to rotate.

[0010] Furthermore, the sleeve is provided with a sliding groove and a limiting groove. The sliding groove is provided along the length of the sleeve and passes through the sleeve. The limiting groove is recessed on the sleeve. The adjusting component is a rotating plate, which is connected to the support arm and can rotate relative to the support arm. When the support arm extends or retracts relative to the sleeve, the rotating plate moves in the sliding groove. Rotating the rotating plate causes it to engage in the limiting groove, thereby fixing the support arm.

[0011] Furthermore, there are multiple limiting grooves, which are spaced apart along the length of the slide.

[0012] Furthermore, both the first and third rollers are omnidirectional wheels.

[0013] Furthermore, the two support arms are arranged symmetrically about the center line of the tripod.

[0014] Furthermore, the two adjustment components are arranged axially symmetrically about the axis of symmetry of the two support arms.

[0015] Beneficial effects:

[0016] 1. The hand-operated hydraulic cart of this utility model is designed with adjustable third rollers on both sides as auxiliary wheels and equipped with adjustment components. It can provide support when the hydraulic cart turns or encounters uneven ground, effectively preventing the hydraulic cart from tilting or tipping over due to a single universal wheel, and significantly improving the stability and safety of the hydraulic cart.

[0017] 2. Because the height of the third roller is adjustable, the hydraulic truck can flexibly adjust the extension length of the support roller according to the ground height and vehicle load, adapting to different usage environments and terrain changes, thus enhancing the versatility and adaptability of the hydraulic truck.

[0018] 3. By adjusting the design of the sleeve, screw, crank, and rotating plate in the assembly, users can easily adjust the length of the support arm, thereby controlling the height change of the third roller. The operation is simple and convenient, and it can quickly adapt to different operating needs, improving the efficiency of use. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an existing hand-operated hydraulic trolley from one perspective;

[0020] Figure 2 This is a structural schematic diagram of an existing hand-operated hydraulic trolley from another perspective;

[0021] Figure 3 This is a schematic diagram of the support arm of the anti-tipping hand-operated hydraulic trolley used in this embodiment of the utility model in a retracted state;

[0022] Figure 4 This is a schematic diagram of the support arm of the anti-tipping hand-operated hydraulic trolley used in this embodiment of the utility model in the extended state;

[0023] Figure 5 This is a cross-sectional view of the adjustment component used in one embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram showing the usage of an adjustment component in one state according to another embodiment of this utility model;

[0025] Figure 7 yes Figure 6 A schematic diagram illustrating the use of another state of the adjustment component in the embodiment;

[0026] Figure 8 yes Figure 6 A schematic diagram of the rotating plate used in the Chinese embodiment.

[0027] The above figures include the following reference numerals:

[0028] 1. Frame; 11. First roller; 12. Second roller; 13. Triangle frame; 131. Base plate; 132. Side plate; 21. Support arm; 22. Mounting plate; 23. Third roller; 3. Adjustment assembly; 31. Sleeve; 311. Slide groove; 312. Limiting groove; 32. Adjusting component; 321. Screw; 322. Rotating plate; 33. Fixing plate; 34. Crank handle; 35. First bevel gear; 36. Second bevel gear. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] According to an embodiment of this utility model, a hand-operated hydraulic cart for preventing tipping is provided. Please refer to [link / reference needed]. Figures 3 to 8 The system includes: a frame 1, which includes a first roller 11 at the front end and a second roller 12 at the rear end; two support arms 21, each with a rotatable third roller 23 connected to its end via a mounting plate 22, the mounting plate 22 and the support arm 21 forming an acute angle, with the first roller 11 positioned between the two third rollers 23; and two adjusting components 3, mounted on the frame 1 and corresponding to each support arm 21, each adjusting component 3 connected to the end of the support arm 21 furthest from the mounting plate 22, the adjusting components 3 driving the support arm 21 to move, thereby adjusting the height of the third roller 23 from the ground to support the hand-operated hydraulic trolley. Figure 1 and Figure 2 As shown, existing hand-operated hydraulic pallet trucks have one front wheel and two rear wheels at each end of the vehicle body. When encountering turns or uneven ground, they are prone to tipping over and scattering goods. To solve this problem, this embodiment designs a... Figure 3 and Figure 4 The structure shown features two third rollers 23 mounted on the frame 1, each connected to a support arm 21. Each support arm 21 is equipped with an adjustment component 3, allowing the user to easily adjust the height of the third rollers 23. The hydraulic trolley can flexibly adjust the height of the third rollers 23 from the ground according to changes in ground elevation and vehicle load, effectively distributing the pressure on the trolley when turning or encountering uneven ground. This increases the stability of the trolley, reduces the risk of tipping, and ensures that the trolley will not tip over under various operating conditions, guaranteeing optimal stability during use. This embodiment of the tipping-proof hand-operated hydraulic trolley solves the technical problem in related technologies where a single-designed front universal wheel structure is prone to tipping over when the vehicle turns or encounters terrain changes.

[0031] See Figure 3 and Figure 4In this embodiment, the anti-tipping hand-operated hydraulic trolley also includes a triangular frame 13 on the frame 1. The triangular frame 13 includes a base plate 131 and two side plates 132. The two side plates 132 extend upward from both sides of the base plate 131 and form an equal angle with the base plate 131. The moving direction of the two support arms 21 is parallel to the corresponding side plates 132. The triangular frame 13 on the frame 1, through the triangular structure formed by the base plate 131 and the two side plates 132, can effectively distribute the weight of the hydraulic trolley and increase its overall stability. Due to the angle design between the base plate 131 and the side plates 132 of the triangular frame 13, the hydraulic trolley can make better contact with the ground, thereby improving the supporting force of the hydraulic trolley, especially on uneven or sloping ground, effectively preventing the hydraulic trolley from tipping over. The design that the moving direction of the support arms 21 is parallel to the side plates 132 makes the movement of the support arms 21 more balanced, avoiding the problem of the hydraulic trolley tilting or instability caused by the asymmetry of the support arms 21.

[0032] See Figure 5 and Figure 6 In this embodiment, the anti-tipping hand-operated hydraulic trolley uses an adjusting assembly 3, which includes a sleeve 31 and an adjusting member 32. The sleeve 31 is fixed to the side plate 132, and the adjusting member 32 is connected to the support arm 21. The connection between the adjusting member 32 and the support arm 21 is located inside the sleeve 31. Driving the adjusting member 32 moves the support arm 21, thereby changing the length of the support arm 21 extending or entering the sleeve 31. The movement of the adjusting member 32 allows the support arm 21 to extend and retract within the sleeve 31, thus adjusting the support height of the hydraulic trolley.

[0033] See Figure 5 In this embodiment of the anti-tipping hand-operated hydraulic trolley, the adjusting component 32 is a screw 321 with external threads. A fixing plate 33 is provided inside the sleeve 31. The screw 321 passes through the fixing plate 33 and is rotatably mounted relative to the fixing plate 33. The connection between the support arm 21 and the screw 321 is provided with an internal thread that matches the external thread. Rotating the screw 321 in the forward or reverse direction causes the threaded transmission to be converted into linear motion of the support arm 21, thereby allowing the support arm 21 to extend and retract within the sleeve 31. By rotating the screw 321 in the forward or reverse direction, the extension and retraction length of the support arm 21 within the sleeve 31 can be precisely controlled, thereby achieving precise adjustment of the height of the third roller 23. This threaded transmission method has high accuracy and reliability, ensuring the stability of the hydraulic trolley under various operating conditions.

[0034] Both the sleeve 31 and the support arm 21 are cuboid structures. When the screw 321 performs threaded transmission, the connection between the support arm 21 and the screw 321 cannot rotate inside the sleeve 31, causing the threaded transmission to be converted into the linear motion of the support arm 21.

[0035] See Figure 5In this embodiment, the anti-tipping hand-operated hydraulic trolley's adjusting assembly 3 also includes a crank handle 34 and a first bevel gear 35. The crank handle 34 passes through a sleeve 31 and connects to the first bevel gear 35. Rotating the crank handle 34 causes the first bevel gear 35 to rotate within the sleeve 31. A second bevel gear 36, meshing with the first bevel gear 35, is provided at the end of the screw 321 furthest from the support arm 21. Rotating the second bevel gear 36 causes the screw 321 to rotate. The crank handle 34 allows the user to rotate the screw 321 in a more effortless and intuitive way. The meshing of the first bevel gear 35 and the second bevel gear 36 ensures that the rotation of the crank handle 34 is effectively converted into the rotational motion of the screw 321, thereby achieving precise adjustment of the height of the support arm 21.

[0036] See Figure 6 , Figure 7 and Figure 8 In this embodiment, the anti-tipping hand-operated hydraulic trolley has a sleeve 31 with a sliding groove 311 and a limiting groove 312. The sliding groove 311 is arranged along the length of the sleeve 31 and extends through the sleeve 31. The limiting groove 312 is recessed on the sleeve 31. The adjusting member 32 is a rotating plate 322, which is connected to the support arm 21 and can rotate relative to the support arm 21. When the support arm 21 extends or retracts relative to the sleeve 31, the rotating plate 322 moves within the sliding groove 311. Rotating the rotating plate 322 causes it to engage within the limiting groove 312, thereby fixing the support arm 21. The rotating plate 322 is connected to the support arm 21 and can move freely within the sliding groove 311 of the sleeve 31, allowing the support arm 21 to be easily extended or retracted relative to the sleeve 31. Once adjusted to the appropriate position, the height of the support arm 21 can be quickly fixed by simply rotating the rotating plate 322, which can engage it within the limiting groove 312, thus avoiding the inconvenience of potentially requiring additional tools or complex steps in traditional adjustment methods. When the rotating plate 322 is engaged in the limiting groove 312, it provides an additional fixing point, effectively preventing the support arm 21 from accidentally moving or loosening without external force.

[0037] See Figure 6 and Figure 7 In this embodiment, the anti-tipping hand-operated hydraulic trolley has multiple limiting grooves 312, which are spaced apart along the length of the slide groove 311. The spaced arrangement of the multiple limiting grooves 312 allows the support arm 21 to be fixed in more positions, thereby providing higher adjustment accuracy.

[0038] In this embodiment, the anti-tipping hand-operated hydraulic trolley uses swivel casters for both the first roller 11 and the third roller 23. Due to the flexibility of the swivel casters, users can more easily control the direction and speed of the hand-operated hydraulic trolley's movement.

[0039] See Figure 3 and Figure 4In this embodiment, the anti-tipping hand-operated hydraulic trolley has two support arms 21 arranged axially symmetrically about the center line of the tripod 13. This axially symmetrical design allows the two support arms 21 to evenly distribute the load on the hydraulic trolley, preventing damage to a single support arm 21 due to excessive pressure. This helps extend the service life of the hydraulic trolley and improve its load-bearing capacity.

[0040] See Figure 3 and Figure 4 In this embodiment of the anti-tipping hand-operated hydraulic trolley, the two adjustment components 3 are arranged axially symmetrically about the axis of symmetry of the two support arms 21. Similarly, the axially symmetrical arrangement allows the two adjustment components 3 to adjust the height and angle of the two support arms 21 in a balanced manner, thereby maintaining the overall stability of the hand-operated hydraulic trolley.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0043] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0044] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0045] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A hand-operated hydraulic trolley for preventing tipping, characterized in that, include: The frame (1) includes a first roller (11) at the front end and a second roller (12) at the rear end. Two support arms (21), the ends of which are connected to rotatable third rollers (23) via mounting plates (22), the mounting plates (22) and the support arms (21) forming an angle, the angle being acute, and the first roller (11) located between the two third rollers (23); Two adjustment components (3) are mounted on the frame (1) and correspond to each of the support arms (21). The adjustment components (3) are connected to the end of the support arm (21) away from the mounting plate (22). The adjustment components (3) drive the support arm (21) to move, thereby adjusting the height of the third roller (23) from the ground to support the hand-pulled hydraulic cart.

2. The anti-tipping hand-operated hydraulic trolley according to claim 1, characterized in that, The frame (1) is also provided with a triangular frame (13), which includes a base plate (131) and two side plates (132). The two side plates (132) extend upward from both sides of the base plate (131) and form an equal angle with the base plate (131). The moving direction of the two support arms (21) is parallel to the corresponding side plate (132).

3. The anti-tipping hand-operated hydraulic trolley according to claim 2, characterized in that, The adjustment assembly (3) includes a sleeve (31) and an adjustment member (32). The sleeve (31) is fixed on the side plate (132). The adjustment member (32) is connected to the support arm (21). The connection between the adjustment member (32) and the support arm (21) is located inside the sleeve (31). Driving the adjustment member (32) to move will drive the support arm (21) to move, thereby changing the length of the support arm (21) extending out or entering the sleeve (31).

4. The anti-tipping hand-operated hydraulic trolley according to claim 3, characterized in that, The adjusting member (32) is a screw (321) with external threads. A fixing plate (33) is provided inside the sleeve (31). The screw (321) passes through the fixing plate (33) and is rotatably disposed relative to the fixing plate (33). The connection between the support arm (21) and the screw (321) is provided with an internal thread that matches the external thread. Rotating the screw (321) in the forward or reverse direction causes the threaded transmission to be converted into the linear motion of the support arm (21), thereby allowing the support arm (21) to extend and retract within the sleeve (31).

5. The anti-tipping hand-operated hydraulic trolley according to claim 4, characterized in that, The adjustment assembly (3) further includes a crank (34) and a first bevel tooth (35). The crank (34) passes through the sleeve (31) and is connected to the first bevel tooth (35). Rotating the crank (34) causes the first bevel tooth (35) to rotate inside the sleeve (31). The end of the screw (321) away from the support arm (21) is provided with a second bevel tooth (36) that meshes with the first bevel tooth (35). Rotating the second bevel tooth (36) causes the screw (321) to rotate.

6. The anti-tipping hand-operated hydraulic trolley according to claim 3, characterized in that, The sleeve (31) is provided with a sliding groove (311) and a limiting groove (312). The sliding groove (311) is provided along the length direction of the sleeve (31) and the sliding groove (311) is provided through the sleeve (31). The limiting groove (312) is recessed on the sleeve (31). The adjusting component (32) is a rotating plate (322), which is connected to the support arm (21) and is rotatable relative to the support arm (21). When the support arm (21) extends or retracts relative to the sleeve (31), the rotating plate (322) moves in the slide groove (311). Rotating the rotating plate (322) causes it to engage in the limiting groove (312), thereby fixing the support arm (21).

7. The anti-tipping hand-operated hydraulic trolley according to claim 6, characterized in that, There are multiple limiting grooves (312), and the multiple limiting grooves (312) are spaced apart along the length direction of the slide groove (311).

8. The anti-tipping hand-operated hydraulic trolley according to claim 1, characterized in that, Both the first roller (11) and the third roller (23) are omnidirectional wheels.

9. The anti-tipping hand-operated hydraulic trolley according to claim 2, characterized in that, The two support arms (21) are arranged symmetrically about the center line of the tripod (13).

10. The anti-tipping hand-operated hydraulic trolley according to claim 9, characterized in that, The two adjustment components (3) are arranged symmetrically about the axis of symmetry of the two support arms (21).

Images