Oil cylinder lifting frame of conveying frame

Abstract

The utility model relates to the technical field of conveying equipment, in particular to an oil cylinder lifting frame of a conveying vehicle frame, which comprises a conveying vehicle bottom frame and a conveying vehicle top frame provided with walking wheel sets, and a first supporting arm and a second supporting arm which are mutually hinged are arranged between the conveying vehicle bottom frame and the conveying vehicle top frame. One end of the first supporting arm and one end of the second supporting arm are hinged to the conveying vehicle underframe and the conveying vehicle top rack correspondingly, and the other ends of the first supporting arm and the second supporting arm are in sliding fit with the conveying vehicle underframe and the conveying vehicle top rack correspondingly. The design of the oil cylinder lifting frame is introduced, so that the limitation of the fixed height design of a traditional conveying vehicle is effectively solved. The telescopic movement of the oil cylinder can flexibly adjust the height of the top rack of the conveying vehicle, so that the distance between the traveling wheels and the ground is adjusted to adapt to platforms with different heights and loading and unloading operation environments; when the conveying vehicle moves to a cargo loading and unloading area, the wheels can be lifted to be in contact with the ground, and the chassis of the conveying vehicle is fixed to the ground, so that the cargo loading and unloading stability is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to an oil cylinder lifting frame of a conveying frame. Background Art

[0002] In the logistics and manufacturing industries, conveyor trucks are essential equipment for efficiently and safely transporting materials within factories, warehouses, and other locations. The advancement of automation and intelligent systems is placing higher demands on the functionality and flexibility of conveyor trucks. Traditional conveyor trucks often feature a fixed height design, making them difficult to adapt to transportation needs at varying heights and in complex environments. This is particularly true when transporting materials over obstacles, adapting to platforms at varying heights, or performing loading and unloading operations.

[0003] To overcome these limitations, liftable transport vehicles have emerged. Transport vehicles using a hydraulic cylinder lift frame are widely used due to their simple structure, smooth lifting, and high load capacity. The hydraulic cylinder lift frame uses the telescopic movement of a hydraulic cylinder to adjust the angle of the support arm, thereby raising and lowering the transport vehicle's roof frame and, in turn, adjusting the height of the travel wheels to suit different working environments and transportation requirements.

[0004] However, existing hydraulic cylinder lift designs often have some problems, such as insufficient stability during lifting, complex structures that make maintenance difficult, and unsatisfactory shock absorption. These problems not only affect the performance of the transport vehicle, but also increase the cost and risk of use. Utility Model Content

[0005] The utility model aims at the technical problems existing in the prior art and provides a hydraulic cylinder lifting frame for a conveying frame to solve the problem of insufficient stability during the lifting process.

[0006] The technical solution of the utility model for solving the above technical problems is as follows: a cylinder lifting frame of a conveyor frame, comprising a conveyor frame and a conveyor frame equipped with a traveling wheel group, wherein a support arm 1 and a support arm 2 which are hinged to each other are arranged between the conveyor frame and the conveyor frame; one end of the support arm 1 and the support arm 2 are respectively hinged to the conveyor frame and the conveyor frame, and the other ends thereof are respectively slidably matched with the conveyor frame and the conveyor frame; an angle adjustment mechanism connected to the support arm 1 and the support arm 2 is provided on the conveyor frame; the angle adjustment mechanism is used to adjust the angles of the support arm 1 and the support arm 2 to drive the traveling wheels on the conveyor frame to rise and fall; the conveyor frame is also equipped with a loading tray.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the sliding ends of the support arm 1 and the support arm 2 are both equipped with pulleys; and the conveyor vehicle bottom frame and the conveyor vehicle top frame are respectively formed with limiting rails adapted to the two pulleys.

[0009] Furthermore, the angle adjustment mechanism includes:

[0010] Cylinder articulated with the underframe of the transport vehicle;

[0011] A connecting rod hinged to the output end of the oil cylinder and hinged to the roof frame of the conveyor vehicle;

[0012] Hydraulic oil pump unit for driving the cylinder.

[0013] Furthermore, a plurality of shock absorbers are provided at the bottom of the conveyor vehicle chassis.

[0014] Furthermore, the shock absorber comprises:

[0015] A vertically arranged limiting sleeve;

[0016] A slider slidably arranged in the limiting sleeve;

[0017] A slide bar connected to the slider and extending through the bottom of the conveyor vehicle chassis;

[0018] a support foot connected to the slide bar;

[0019] A spring is arranged in the limiting sleeve and elastically supports the slider.

[0020] Furthermore, when the traveling wheel assembly on the roof frame of the conveyor vehicle is adjusted to the lowest point, the supporting feet are separated from the ground.

[0021] Furthermore, a plurality of limiting columns facing the underframe of the conveying vehicle are installed on the top frame of the conveying vehicle, and a lifting gap is reserved between the limiting columns and the underframe of the conveying vehicle.

[0022] Moreover, the oil cylinder lifting frame of the conveying frame provided by the present invention has at least the following beneficial effects compared with the prior art:

[0023] This new design effectively overcomes the limitations of traditional fixed-height transport trucks by introducing a hydraulic cylinder lift frame design. The telescopic movement of the hydraulic cylinder can flexibly adjust the height of the transport truck's roof frame, thereby adjusting the distance between the running wheels and the ground, allowing the transport truck to easily adapt to platforms of varying heights and loading and unloading environments. When moving to the loading and unloading area, the wheels can be raised to drag on the ground, while the transport truck's underframe is fixed to the ground, ensuring stability during loading and unloading.

[0024] This utility model addresses the issues of insufficient stability and suboptimal shock absorption found in existing hydraulic cylinder lift designs, offering numerous improvements. By adding a pulley and limit rail combination, the support arm ensures smooth sliding during the lifting process, reducing friction and vibration and improving structural stability. Furthermore, a shock absorber is installed at the bottom of the transport vehicle underframe, utilizing the elastic support of the spring to effectively mitigate impact and vibration during travel, protecting the transport vehicle and its load. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0027] Figure 3 It is a partial structural sectional view of the utility model.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Transport vehicle underframe; 2. Transport vehicle roof frame; 3. Support arm 1; 4. Support arm 2; 5. Angle adjustment mechanism; 5.1. Oil cylinder; 5.2. Connecting rod; 5.3. Hydraulic oil pump assembly; 6. Cargo tray; 7. Pulley; 8. Limit rail; 9. Shock absorber; 9.1. Limit sleeve; 9.2. Slider; 9.3. Sliding rod; 9.4. Support foot; 9.5. Spring; 10. Limit column. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integrated structures. Those skilled in the art will understand the specific meanings of such terms in this patent based on specific circumstances.

[0032] like Figure 1 、 Figure 2 and Figure 3As shown, the cylinder lifting frame of the conveying frame of the present invention comprises a conveying vehicle underframe 1 and a conveying vehicle roof frame 2 equipped with a walking wheel group, and mutually hinged support arm 1 3 and support arm 2 4 are arranged between the conveying vehicle underframe 1 and the conveying vehicle roof frame 2; one end of the support arm 1 3 and support arm 2 4 are respectively hinged to the conveying vehicle underframe 1 and the conveying vehicle roof frame 2, and the other end thereof is respectively slidably matched with the conveying vehicle underframe 1 and the conveying vehicle roof frame 2; an angle adjustment mechanism 5 connected to the support arm 1 3 and support arm 2 4 is provided on the conveying vehicle underframe 1; the angle adjustment mechanism 5 is used to adjust the angle of the support arm 1 3 and the support arm 2 4 to drive the walking wheels on the conveying vehicle roof frame 2 to rise and fall; a loading tray 6 is also installed on the conveying vehicle roof frame 2.

[0033] As an embodiment, the sliding ends of the support arm 1 3 and the support arm 2 4 are both equipped with pulleys 7; and the conveyor vehicle underframe 1 and the conveyor vehicle top frame 2 are respectively formed with limiting rails 8 adapted to the two pulleys 7.

[0034] Pulleys 7, acting as sliding elements, are mounted on the slidable ends of support arms 1 3 and 2 4. They provide smooth sliding guidance during the lifting and lowering of the support arms, reducing friction and wear. Limit rails 8, designed to match the contours of pulleys 7, are installed on the underframe 1 and roof frame 2 of the transport vehicle, respectively. These limit rails provide a clear path for the pulleys, ensuring that the support arms remain stable and do not deviate from their intended direction during lifting and lowering.

[0035] As an embodiment, the angle adjustment mechanism 5 includes:

[0036] Cylinder 5.1 articulated to the underframe 1 of the transport vehicle;

[0037] A connecting rod 5.2 is hinged to the output end of the oil cylinder 5.1 and hinged to the roof frame 2 of the transport vehicle;

[0038] A hydraulic oil pump assembly 5.3 is used to drive the oil cylinder 5.1.

[0039] Hydraulic pump assembly 5.3 serves as the power source, providing hydraulic power for the entire angle adjustment mechanism. When activated, it pumps hydraulic oil into cylinder 5.1, driving the cylinder's piston rod to extend and retract. The connecting rod then converts the cylinder's linear motion into an angular change in the support arm, ultimately achieving the desired height adjustment of the transport vehicle's roof rack.

[0040] Specifically, when the traveling wheel assembly on the transport vehicle roof frame 2 is adjusted to the lowest point, the supporting feet 9.4 are separated from the ground.

[0041] When the transport vehicle is in transport mode, the travel wheel assembly needs to be adjusted to the lowest point to ensure that the wheels are in full contact with the ground, thereby providing stable driving capabilities.

[0042] In this state, the support legs 9.4 are separated from the ground and do not play any supporting role. This is because the wheels are already sufficient to support the weight of the entire transport vehicle, and the presence of the support legs may increase resistance and instability during driving.

[0043] After the transport vehicle travels to the working area, it is necessary to prepare to work. At this moment, the traveling wheel group needs to rise so that the transport vehicle roof frame 2 is raised to a suitable working height.

[0044] As the traveling wheel assembly rises, the support foot 9.4 gradually approaches the ground and eventually contacts the ground. The support foot now begins to bear part or all of the weight of the transport vehicle, providing a stable support platform for the transport vehicle.

[0045] As an embodiment, a plurality of limiting columns 10 facing the underframe 1 of the transport vehicle are installed on the top frame 2 of the transport vehicle, and a lifting gap is reserved between the limiting columns 10 and the underframe 1 of the transport vehicle.

[0046] The clearance between the limit column and the base frame is the space required for the top frame to be raised or lowered. The size of this clearance depends on the amplitude and accuracy of the top frame's lifting.

[0047] The working principle of this utility model is as follows:

[0048] The lifting frame primarily consists of a transport vehicle underframe 1 and a transport vehicle topframe 2, connected by hinged support arms 1 3 and 2 4. One end of each support arm is hinged to the underframe and topframe, respectively, allowing them to rotate around their hinge points. The other end of each support arm slides with the underframe and topframe, respectively, allowing relative sliding during lifting, thereby maintaining structural stability and flexibility.

[0049] To adjust the height of the transport vehicle's top frame 2, an angle adjustment mechanism 5 is installed on the transport vehicle's underframe 1. This mechanism changes the angle between support arm 1 3 and support arm 2 4, causing them to rotate. Because the other ends of the support arms slide in contact with the top frame, this rotational motion is converted into vertical movement of the top frame, thereby adjusting the height of the travel wheels.

[0050] Specifically, the angle adjustment mechanism 5 typically uses a hydraulic cylinder 5.1 as its power source. The output end of the hydraulic cylinder is connected to the transport vehicle's top frame 2 via a connecting rod 5.2. When the hydraulic oil pump assembly 5.3 drives the hydraulic cylinder to extend or retract, the connecting rod moves accordingly, causing the angle of the support arm to change. Due to the hinged and sliding connection between the support arm, the bottom frame, and the top frame, this angle change is ultimately converted into a lifting motion of the top frame.

[0051] In addition, to enhance the stability and carrying capacity of the transport vehicle, a loading tray 6 is mounted on the transport vehicle roof frame 2 for carrying and transporting materials. At the same time, to further improve the shock absorption effect, a plurality of shock absorbers 9 are also provided at the bottom of the transport vehicle underframe 1 to alleviate vibration and impact during driving.

[0052] It should be noted that, in this article, the terms "include", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise expressly specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0053] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0054] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A hydraulic cylinder lifting frame for a transport vehicle frame, comprising a transport vehicle bottom frame (1) and a transport vehicle top frame (2) equipped with a running wheel set, characterized in that: A support arm 1 (3) and a support arm 2 (4) are arranged between the conveying vehicle bottom frame (1) and the conveying vehicle top frame (2); one end of the support arm 1 (3) and the support arm 2 (4) are respectively hinged to the conveying vehicle bottom frame (1) and the conveying vehicle top frame (2), and the other end thereof is respectively slidably matched with the conveying vehicle bottom frame (1) and the conveying vehicle top frame (2); an angle adjustment mechanism (5) connected to the support arm 1 (3) and the support arm 2 (4) is provided on the conveying vehicle bottom frame (1); the angle adjustment mechanism (5) is used to adjust the angle of the support arm 1 (3) and the support arm 2 (4) to drive the travel wheels on the conveying vehicle top frame (2) to rise and fall; a loading tray (6) is also installed on the conveying vehicle top frame (2).

2. The oil cylinder lifting frame of the transport frame according to claim 1, characterized in that: The sliding ends of the support arm 1 (3) and the support arm 2 (4) are both equipped with pulleys (7); and the conveying vehicle bottom frame (1) and the conveying vehicle top frame (2) are respectively formed with limiting rails (8) adapted to the two pulleys (7).

3. The oil cylinder lifting frame of the transport frame according to claim 1, characterized in that: The angle adjustment mechanism (5) comprises: An oil cylinder (5.1) articulated to the underframe (1) of the transport vehicle; A connecting rod (5.2) hinged to the output end of the oil cylinder (5.1) and hinged to the top frame (2) of the transport vehicle; A hydraulic oil pump unit (5.3) is used to drive the oil cylinder (5.1).

4. The oil cylinder lifting frame of the transport frame according to claim 1, characterized in that: A plurality of shock absorbers (9) are provided at the bottom of the conveying vehicle underframe (1).

5. The oil cylinder lifting frame of the transport frame according to claim 4, characterized in that: The shock absorber (9) comprises: A vertically arranged limiting sleeve (9.1); A slider (9.2) slidably arranged in the limiting sleeve (9.1); A slide bar (9.3) connected to the slide block (9.2) and extending through the bottom of the conveyor vehicle chassis (1); A supporting foot (9.4) connected to the slide bar (9.3); A spring (9.5) is arranged in the limiting sleeve (9.1) and elastically supports the sliding block (9.2).

6. The oil cylinder lifting frame of the transport frame according to claim 5, characterized in that: When the traveling wheel assembly on the transport vehicle roof frame (2) is adjusted to the lowest point, the supporting foot (9.4) is separated from the ground.

7. The oil cylinder lifting frame of the transport frame according to any one of claims 1 to 6, characterized in that: The conveying vehicle top frame (2) is provided with a plurality of limiting columns (10) facing the conveying vehicle bottom frame (1), and a lifting gap is reserved between the limiting columns (10) and the conveying vehicle bottom frame (1).

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