Double-cylinder lifting structure and mining wide-body dumper
By using a dual-cylinder lifting structure, two lifting cylinders are hinged to the cargo box, solving the problem of low lifting efficiency of the cargo box in mining wide-body dump trucks and achieving more efficient cargo box load bearing and stability.
Patent Information
- Application Number
- CN202423264702.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The existing wide-body dump trucks for mining have low cargo box lifting efficiency, and the efficiency of a single lifting cylinder is poor under the weight of the cargo box and the goods.
It adopts a dual-cylinder lifting structure, with two lifting cylinders connected to the lifting seat via a connecting shaft and hinged to the cargo box to achieve synchronous extension and retraction, thereby enhancing load-bearing capacity.
It significantly improves the lifting efficiency of the cargo box and enhances the load-bearing stability and efficiency of the cargo box and cargo load.
Smart Images
Figure CN223618635U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering vehicle technology, specifically to a dual-cylinder lifting structure and a wide-body dump truck for mining. Background Technology
[0002] Mining wide-body dump trucks are heavy-duty off-highway dump trucks used in open-pit coal mines, stone quarries, and other transportation industries. To ensure operational efficiency, they feature large cargo box volumes and high load capacities. During operation, the cargo box needs to be frequently raised and lowered. Therefore, the reliability of the cargo box lifting mechanism is crucial. The lifting cylinder, as the actuator of the cargo box lifting mechanism, is hinged at its upper end to the cargo box and at its lower end to the chassis support. Oil is supplied by a hydraulic pump to achieve the extension and retraction of the cylinder, thereby completing the raising and lowering of the cargo box.
[0003] Currently, lifting cylinders are generally placed in the middle of the front end of the cargo box, and a single cylinder lifting method is used. During the lifting process, due to the weight of the cargo box and the goods, the pressure on a single support is relatively large, resulting in low lifting efficiency of the cargo box. Utility Model Content
[0004] The problem this invention addresses is: how to improve the lifting efficiency of cargo boxes.
[0005] To address the aforementioned problems, this utility model provides a dual-cylinder lifting structure for mounting on a vehicle frame. The structure includes two parallel lifting cylinders, a lifting seat, and a connecting shaft. The lifting seat is mounted at the bottom of the vehicle frame, and the connecting shaft extends along the width of the vehicle frame and is connected to the lifting seat. The vehicle frame is located between the two lifting cylinders. The two drive ends of the two lifting cylinders are respectively hinged to the two axially upward ends of the connecting shaft. The two cylinder bodies of the two lifting cylinders are respectively used for hinged connection with the cargo box.
[0006] Optionally, the connecting shaft includes a torque tube and two support shafts. The torque tube is connected to the lifting seat, and the two support shafts are respectively inserted into the two ends of the torque tube in the axial direction. The two support shafts are respectively hinged to the two drive ends of the two lifting cylinders.
[0007] Optionally, the dual-cylinder lifting structure further includes two external reinforcing rib structures. The two external reinforcing rib structures are respectively connected to both ends of the lifting seat in the vehicle width direction. The length direction of the external reinforcing rib structure is parallel to the extension and retraction direction of the lifting cylinder. One end of the length direction of each external reinforcing rib structure is connected to the torque tube, and the other end extends away from the torque tube.
[0008] Optionally, the thickness of the outer reinforcing rib structure gradually decreases in the direction away from the torsion tube, and the thickness is the dimension of the outer reinforcing rib structure in the vehicle width direction.
[0009] Optionally, the lifting seat is configured as a box structure, including two parallel upright plates and a housing connected between the two upright plates. The two upright plates and the housing are respectively connected to the bottom end of the vehicle frame, and the connecting shaft passes through the two upright plates and the housing respectively.
[0010] Optionally, the portion of the housing away from the side plate of the frame is bent toward the frame to form a channel between it and the connecting shaft, the channel being for the transmission structure on the frame to pass through.
[0011] Optionally, the dual-cylinder lifting structure further includes a limiting plate, which is connected to the end of the support shaft away from the torsion tube and is used to limit the axial movement of the driving end of the lifting cylinder on the support shaft.
[0012] Optionally, the support shaft is further provided with a shoulder, which is welded to the end of the torsion tube.
[0013] Optionally, the cylinder bodies of the two lifting cylinders are tilted toward the rear end of the vehicle frame and used for hinged to the cargo box.
[0014] Compared with related technologies, the dual-cylinder lifting structure of this utility model can fix the lifting seat by connecting it to the bottom of the vehicle frame. The two drive ends of the two lifting cylinders are respectively hinged to the two ends of the connecting shaft in the axial direction. The connecting shaft is connected to the lifting seat, so that the two drive ends of the two lifting cylinders can be mounted on the lifting seat through the connecting shaft, thus ensuring the stable use of the two drive ends of the two lifting cylinders. Furthermore, the two cylinder bodies of the two lifting cylinders are respectively hinged to the cargo box, and the vehicle frame is located between the two lifting cylinders. The two lifting cylinders can extend and retract on both sides in the width direction of the vehicle frame. Thus, during the lifting and lowering of the cargo box, the two lifting cylinders can jointly bear the common load of the cargo box and the goods inside the cargo box, which can significantly improve the lifting efficiency of the cargo box.
[0015] Another aspect of this utility model is a wide-body dump truck for mining, which includes the dual-cylinder lifting structure as described above.
[0016] This wide-body dump truck for mining has all the benefits of the twin-cylinder lifting structure, which will not be elaborated here. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the dual-cylinder lifting structure in an embodiment of the present utility model;
[0018] Figure 2This is a cross-sectional view of the dual-cylinder lifting structure in an embodiment of this utility model.
[0019] Explanation of reference numerals in the attached figures:
[0020] 1-Chassis; 2-Lifting cylinder; 3-Lifting seat; 31-Upright plate; 32-Shell; 321-Channel; 322-First shell; 323-Second shell; 4-Connecting shaft; 41-Torque tube; 42-Support shaft; 421-Shoulder; 5-Outer reinforcing rib structure; 6-Cargo box. Detailed Implementation
[0021] To make the above-mentioned objectives, 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.
[0022] In the attached diagram, the X-axis represents the horizontal position, with the positive direction of the X-axis (where the arrow points) indicating the right side and the negative direction (opposite to the positive direction) indicating the left side. The Y-axis represents the front-to-back position, with the positive direction of the Y-axis (where the arrow points) indicating the front and the negative direction (opposite to the positive direction) indicating the rear. The Z-axis represents the vertical position, with the positive direction of the Z-axis (where the arrow points) indicating the top and the negative direction (opposite to the positive direction) indicating the bottom. It should be noted that the aforementioned representations of the X, Y, and Z axes are for ease of description and simplification of the invention, and do not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.
[0023] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model 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 utility model described herein can be implemented in sequences other than those illustrated or described herein.
[0024] Combination Figure 1 and Figure 2 As shown, in one embodiment of this utility model, a dual-cylinder lifting structure is provided for mounting on a vehicle frame 1. It includes two parallel lifting cylinders 2, a lifting seat 3, and a connecting shaft 4. The lifting seat 3 is mounted on the bottom end of the vehicle frame 1, and the connecting shaft 4 extends along the width direction of the vehicle frame 1 and is connected to the lifting seat 3. The vehicle frame 1 is located between the two lifting cylinders 2. The two drive ends of the two lifting cylinders 2 are respectively hinged to the two ends of the connecting shaft 4 in the axial direction. The two cylinder bodies of the two lifting cylinders 2 are respectively used to hinge with the cargo box 6.
[0025] Specifically, the top of the lifting seat 3 is welded to the bottom of the frame 1. The connecting shaft 4 extends along the width direction of the frame 1, that is, along the X-axis direction. The connecting shaft 4 passes through the lower end of the lifting seat 3, and its two axial ends extend from the lifting seat 3. The frame 1 is located between two lifting cylinders 2. The two drive ends of the two lifting cylinders 2 are respectively fitted onto the two axial ends of the connecting shaft 4 and are hinged to them. The two cylinder bodies of the two lifting cylinders 2 are respectively used to hinge with the cargo box 6. When the cargo box 6 is raised or lowered, the two parallel lifting cylinders 2 extend in the same direction. The two lifting cylinders 2 can extend synchronously on the left and right sides of the frame 1. The two lifting cylinders 2, supported by the lifting seat 3, jointly bear the load of the cargo box 6 and the goods inside the cargo box 6.
[0026] Therefore, in this embodiment, the lifting seat 3 is fixed by connecting it to the bottom end of the frame 1. The two drive ends of the two lifting cylinders 2 are respectively hinged to the two ends of the connecting shaft 4 in the axial direction. The connecting shaft 4 is connected to the lifting seat 3, so that the two drive ends of the two lifting cylinders 2 can be installed on the lifting seat 3 through the connecting shaft 4. This ensures the stable use of the two drive ends of the two lifting cylinders 2. The two cylinder bodies of the two lifting cylinders 2 are respectively hinged to the cargo box 6. The frame 1 is located between the two lifting cylinders 2. The two lifting cylinders 2 can extend and retract on both sides in the width direction of the frame 1. Thus, during the lifting and lowering of the cargo box 6, the two lifting cylinders 2 can jointly bear the common load of the cargo box 6 and the goods inside the cargo box 6, which can significantly improve the lifting efficiency of the cargo box 6.
[0027] Optionally, combined Figure 1 and Figure 2 As shown, the connecting shaft 4 includes a torque tube 41 and two support shafts 42. The torque tube 41 is connected to the lifting seat 3. The two support shafts 42 are respectively inserted into the two ends of the torque tube 41 in the axial direction. The two support shafts 42 are respectively hinged to the two driving ends of the two lifting cylinders 2.
[0028] Specifically, the inside of the torsion tube 41 is hollow, and two support shafts 42 are respectively inserted into the left and right ends of the torsion tube 41. The two support shafts 42 are then hinged to the two drive ends of the two lifting cylinders 2.
[0029] Thus, the torsion tube 41 is connected to the lifting seat 3, which supports the torsion tube 41. The lifting seat 3 is hinged to the two driving ends of the two lifting cylinders 2 via two support shafts 42. The two support shafts 42 are inserted into the two ends of the torsion tube 41 in the axial direction. The torsion tube 41 can have a certain degree of deflection. In this way, when the frame 1 is subjected to an off-center load, the torsion tube 41 is allowed to undergo slight deformation, thereby giving the connecting shaft 4 a certain degree of flexibility and improving the structural stability of the connecting shaft 4.
[0030] Optionally, combined Figure 1As shown, the dual-cylinder lifting structure also includes two external reinforcing rib structures 5. The two external reinforcing rib structures 5 are respectively connected to the two ends of the lifting seat 3 in the vehicle width direction. The length direction of the external reinforcing rib structure 5 is parallel to the extension and retraction direction of the lifting cylinder 2. One end of the length direction of each external reinforcing rib structure 5 is connected to the torque tube 41, and the other end extends away from the torque tube 41.
[0031] Specifically, when the lifting cylinder 2 extends, the lifting cylinder 2 applies downward pressure to the shaft end of the torsion tube 41. This pressure causes the shaft end of the torsion tube 41 to bear a bending load, while the outer reinforcing rib structure 5 can offset the bending load borne by the shaft end of the torsion tube 41 to ensure the structural strength of the shaft end of the torsion tube 41.
[0032] Thus, by connecting one end of each outer reinforcing rib structure 5 along its length to the torsion tube 41 and extending the other end away from the torsion tube 41, the outer reinforcing rib structure 5 is positioned above the torsion tube 41. The two outer reinforcing rib structures 5 are respectively connected to the two ends of the lifting seat 3 in the vehicle width direction. The length direction of the outer reinforcing rib structure 5 is parallel to the extension and retraction direction of the lifting cylinder 2. The outer reinforcing rib structure 5 can counteract the pressure exerted by the lifting cylinder 2 on the torsion tube 41, thereby improving the structural strength of the shaft end of the torsion tube 41.
[0033] Optionally, combined Figure 1 As shown, the thickness of the outer reinforcing rib structure 5 gradually decreases in the direction away from the torsion tube 41, and the thickness is the dimension of the outer reinforcing rib structure 5 in the vehicle width direction.
[0034] Specifically, the thickness of the outer reinforcing rib structure 5 gradually decreases in the direction away from the torsion tube 41, which can also be understood as the distance between the side wall of the outer reinforcing rib structure 5 in the positive direction of the X-axis and the vertical plate 31 gradually decreasing.
[0035] Thus, by gradually reducing the thickness of the outer reinforcing rib structure 5 in the direction away from the torsion tube 41, and the thickness being the dimension of the outer reinforcing rib structure 5 in the vehicle width direction, a lightweight design of the outer reinforcing rib structure 5 can be achieved, reducing the installation space requirements of the outer reinforcing rib structure 5 on the frame 1, thereby improving the installation flexibility of the outer reinforcing rib structure 5.
[0036] Optionally, combined Figure 1 and Figure 2 As shown, the lifting seat 3 is configured as a box structure and includes two parallel upright plates 31 and a housing 32 connected between the two upright plates 31. The two upright plates 31 and the housing 32 are respectively connected to the bottom end of the frame 1, and the connecting shaft 4 passes through the two upright plates 31 and the housing 32 respectively.
[0037] Specifically, the two upright plates 31 are welded to the left and right ends of the housing 32 respectively, and the upper ends of the housing 32 and the two upright plates 31 are welded to the lower end of the frame 1. The connecting shaft 4 passes through the lower ends of the two upright plates 31 and the housing 32, and extends out from the two upright plates 31 and the housing 32 to connect with the two lifting cylinders 2 respectively.
[0038] Thus, by setting the lifting seat 3 as a box structure, including two parallel upright plates 31 and a shell 32 connected between the two upright plates 31, the two upright plates 31 and the shell 32 are respectively connected to the bottom end of the frame 1, and the connecting shaft 4 passes through the two upright plates 31 and the shell 32 respectively, the lightweight design of the lifting seat 3 is realized. When the frame 1 is under uneven load, the lifting seat 3 can have a certain degree of deflection (such as slight bending deformation), thereby improving the applicability of the lifting seat 3.
[0039] Optionally, combined Figure 1 and Figure 2 As shown, the portion of the housing 32 away from the side plate of the frame 1 is bent toward the frame 1 to form a channel 321 between it and the connecting shaft 4. The channel 321 is used for the transmission structure on the frame 1 to pass through.
[0040] Specifically, the side plate of housing 32 away from frame 1 refers to the side plate of housing 32 in the negative direction of Z-axis, that is, the bottom plate of housing 32. The middle position of the bottom plate of housing 32 is bent towards frame 1. After bending, a channel 321 can be formed between the middle position of the bottom plate and the connecting shaft 4. The transmission structure such as the drive shaft on frame 1 can pass through the channel 321.
[0041] Thus, the portion of the housing 32 away from the side plate of the frame 1 is bent toward the frame 1 to form a channel 321 between it and the connecting shaft 4. The channel 321 is used for the transmission structure on the frame 1 to pass through. The arrangement of the channel 321 on the housing 32 forms a clearance channel to avoid the housing 32 from affecting the installation of the transmission structure on the frame 1, thereby improving the reliability of the housing 32.
[0042] Based on the above embodiments, the housing 32 may include two second housings 323 and one first housing 322. The two second housings 323 are fitted onto the torsion tube 41 and welded to the two upright plates 31 respectively. The left and right sides of the first housing 322 are welded to the two upright plates 31 respectively. The middle part of the bottom wall of the first housing 322 is bent toward the frame 1. The left and right ends of the bottom wall of the first housing 322 are welded to the two second housings 323 respectively. The top wall of the first housing 322 is welded to the bottom of the frame 1. While realizing the separate manufacturing of the housing 32, it is convenient to replace the first housing 322 and the second housing 323 separately, so as to facilitate the maintenance of the housing 32.
[0043] Optionally, combined Figure 1 and Figure 2As shown, the dual-cylinder lifting structure also includes a limiting plate, which is connected to the end of the support shaft 42 away from the torsion tube 41, and is used to limit the axial movement of the drive end of the lifting cylinder 2 on the support shaft 42.
[0044] Specifically, the end of the support shaft 42 away from the torsion tube 41 is provided with a threaded hole. After the drive end of the lifting cylinder 2 is sleeved on the support shaft 42, the limiting plate is fixed to the support shaft 42 by bolts. The limiting plate restricts the axial movement of the drive end of the lifting cylinder 2 on the support shaft 42 so as to avoid hindering the drive end of the lifting cylinder 2 from disengaging from the support shaft 42.
[0045] Thus, by connecting the limiting plate to the end of the support shaft 42 away from the torsion tube 41, and using it to limit the axial movement of the driving end of the lifting cylinder 2 on the support shaft 42, the limiting plate can prevent the driving end of the lifting cylinder 2 from making axial movement away from the support shaft 42, thereby improving the connection stability between the driving end of the lifting cylinder 2 and the support shaft 42.
[0046] Optionally, combined Figure 1 and Figure 2 As shown, a shoulder 421 is also provided on the support shaft 42, and the shoulder 421 is welded to the end of the torsion tube 41.
[0047] Specifically, after the shoulder 421 is attached to the end of the torsion tube 41, the position where the shoulder 421 is attached to the end of the torsion tube 41 is welded and fixed.
[0048] Thus, by providing a shoulder 421 on the support shaft 42 and welding the shoulder 421 to the end of the torsion tube 41, the connection strength between the support shaft 42 and the torsion tube 41 can be improved.
[0049] Optionally, combined Figure 1 As shown, the cylinder bodies of the two lifting cylinders 2 are tilted toward the rear end of the frame 1 and are used to hinge with the cargo box 6.
[0050] Specifically, the rear end of the frame 1 refers to the end of the frame 1 located in the negative direction of the Y-axis. It can be understood that the rear end of the cargo box 6 is rotatably connected to the rear end of the frame 1 via a pivot shaft. The cargo box 6 can be unloaded by rotating away from the frame 1. After the drive ends of the two lifting cylinders 2 are connected to the two support shafts 42 respectively, the cylinder bodies of the two lifting cylinders 2 are tilted towards the rear end of the frame 1 and then hinged to the cargo box 6. That is, the length direction of the two lifting cylinders 2 forms an angle with the vertical direction.
[0051] Thus, by tilting the cylinder bodies of the two lifting cylinders 2 toward the rear end of the frame 1 and using them to hinge with the cargo box 6, the two lifting cylinders 2 can improve the rotation efficiency of the cargo box 6 relative to the frame 1 after they are extended.
[0052] Another embodiment of this utility model provides a wide-body dump truck for mining, including the aforementioned dual-cylinder lifting structure.
[0053] This wide-body dump truck for mining has all the benefits of the twin-cylinder lifting structure, which will not be elaborated here.
[0054] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. A dual-cylinder lifting structure for mounting on a vehicle frame (1), characterized in that, It includes two parallel lifting cylinders (2), a lifting seat (3) and a connecting shaft (4). The lifting seat (3) is installed at the bottom end of the frame (1). The connecting shaft (4) extends along the width direction of the frame (1) and is connected to the lifting seat (3). The frame (1) is located between the two lifting cylinders (2). The two drive ends of the two lifting cylinders (2) are respectively hinged to the two ends of the connecting shaft (4) in the axial direction. The two cylinder bodies of the two lifting cylinders (2) are respectively used to hinge with the cargo box.
2. The dual-cylinder lifting structure according to claim 1, characterized in that, The connecting shaft (4) includes a torque tube (41) and two support shafts (42). The torque tube (41) is connected to the lifting seat (3). The two support shafts (42) are respectively inserted into the two ends of the torque tube (41) in the axial direction. The two support shafts (42) are respectively hinged to the two driving ends of the two lifting cylinders (2).
3. The dual-cylinder lifting structure according to claim 2, characterized in that, It also includes two external reinforcing rib structures (5), which are respectively connected to the two ends of the lifting seat (3) in the vehicle width direction. The length direction of the external reinforcing rib structure (5) is parallel to the extension and retraction direction of the lifting cylinder (2), and one end of the length direction of each external reinforcing rib structure (5) is connected to the torsion tube (41), and the other end extends away from the torsion tube (41).
4. The dual-cylinder lifting structure according to claim 3, characterized in that, The thickness of the outer reinforcing rib structure (5) gradually decreases in the direction away from the torsion tube (41), and the thickness is the dimension of the outer reinforcing rib structure (5) in the vehicle width direction.
5. The dual-cylinder lifting structure according to claim 1, characterized in that, The lifting seat (3) is configured as a box structure and includes two parallel upright plates (31) and a housing (32) connected between the two upright plates (31). The two upright plates (31) and the housing (32) are respectively connected to the bottom end of the frame (1), and the connecting shaft (4) passes through the two upright plates (31) and the housing (32).
6. The dual-cylinder lifting structure according to claim 5, characterized in that, The portion of the housing (32) away from the side plate of the frame (1) bends toward the frame (1) to form a channel (321) between it and the connecting shaft (4), the channel (321) being for the transmission structure on the frame (1) to pass through.
7. The dual-cylinder lifting structure according to claim 2, characterized in that, It also includes a limiting plate, which is connected to one end of the support shaft (42) away from the torsion tube (41) and is used to limit the movement of the drive end of the lifting cylinder (2) in the axial direction of the support shaft (42).
8. The dual-cylinder lifting structure according to claim 2, characterized in that, The support shaft (42) is also provided with a shoulder (421), which is welded to the end of the torsion tube (41).
9. The dual-cylinder lifting structure according to claim 1, characterized in that, The cylinder bodies of the two lifting cylinders (2) are tilted toward the rear end of the frame (1) and are used to hinge with the cargo box (6).
10. A wide-body dump truck for mining, characterized in that, Includes the dual-cylinder lifting structure as described in any one of claims 1-9.