Two-stage free portal frame of forklift

Abstract

The utility model discloses a two-stage free portal frame of a forklift. The two-stage free portal frame comprises two fork arms and an oil way structure. The oil path structure drives the two fork arms to lift and move; the oil way structure comprises two first hydraulic cylinders used for adjusting the distance between the two fork arms, a first support used for installing the fork arms, two second hydraulic cylinders used for adjusting the height of the fork arms and a second support used for installing the second hydraulic cylinders. Through the innovative design of the oil way structure, the oil way structure is simplified, the maintenance time is shortened, and the overhaul efficiency is improved; meanwhile, the distance, the height and the gradient of the fork arms are accurately adjusted; by means of the design, the flexibility and efficiency of the forklift in the process of carrying goods of different sizes and weights are improved, and the operation difficulty is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a two-stage free gantry of a forklift belongs to the forklift field. BACKGROUND

[0002] Referring to Figure 6 The prior art with publication number CN214527964U discloses a forklift gantry oil circuit structure, which comprises a fork frame and a lifting assembly for lifting the fork frame, the fork frame is slidably connected to the lifting assembly, the lifting assembly is provided with an observation area for an operator to observe, and a plurality of oil pipes are arranged on the lifting assembly and located outside the observation area and on the side of the lifting assembly away from the fork frame.

[0003] However, the prior art mainly passes a plurality of oil supply pipes through corresponding mounting plates, which reduces the friction of the oil pipes, but complicates the device structure, the oil circuit system, and prolongs the maintenance time and makes the maintenance difficult. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a two-stage free gantry of a forklift to solve the problem.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme: a two-stage free gantry of a forklift, comprising two fork arms and an oil circuit structure; the oil circuit structure drives the two fork arms to move up and down; the oil circuit structure comprises two first hydraulic cylinders for adjusting the distance between the two fork arms, a first support for mounting the fork arms, two second hydraulic cylinders for adjusting the height of the fork arms, a second support for mounting the second hydraulic cylinders, and two third hydraulic cylinders for adjusting the inclination of the fork arms; the two first hydraulic cylinders are arranged horizontally and each is connected to one fork arm; the two second hydraulic cylinders are arranged vertically and are connected to the first support together; and the third hydraulic cylinders are hinged to the forklift.

[0006] Preferably, the two fork arms are sleeved on a transversely arranged limiting frame, the limiting frame is fixed to the first support, the two first hydraulic cylinders are hinged to the first support, and the first hydraulic cylinders are hinged to the fork arms.

[0007] Preferably, the second hydraulic cylinders are arranged on the rear side of the first support, and the second hydraulic cylinders are fixed to the second support.

[0008] Preferably, the first support is slidably mounted on the second support.

[0009] Preferably, the second hydraulic cylinders are connected to a roller shaft, the roller shaft is covered with a track belt, one end of the track belt is fixed to the second support, and the other end is fixed to the first support.

[0010] Preferably, the second support is provided with a third support on one side; and the second support is slidingly installed on the third support.

[0011] Preferably, two fourth hydraulic cylinders are installed on the third support; the two fourth hydraulic cylinders are vertically arranged, and the fourth hydraulic cylinders act on the second support.

[0012] Preferably, one end of the third hydraulic cylinder is hingedly connected to the third support.

[0013] Beneficial effects

[0014] The oil path structure is simplified through the innovative oil path structure design, thereby reducing the maintenance time and providing the maintenance efficiency; meanwhile, the accurate adjustment of the distance, height and inclination of the fork arms is realized; the design not only improves the flexibility and efficiency of the forklift when carrying different sizes and weights of goods, but also greatly reduces the operation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0016] Figure 1 Fig. 1 is a structural schematic view of a three-dimensional angle one of the present application;

[0017] Figure 2 Fig. 2 is a structural schematic view of a three-dimensional angle two of the present application;

[0018] Figure 3 Fig. 3 is a structural schematic view of a first support of the present application;

[0019] Figure 4 Fig. 4 is a structural schematic view of a second support of the present application;

[0020] Figure 5 Fig. 5 is a structural schematic view of a third support of the present application;

[0021] Figure 6 Fig. 6 is a structural schematic view of the prior art. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0023] Please refer to Figures 1-5The utility model provides a two -stage free gantry technical scheme of fork truck: including 2 fork arms 1, oil way structure, the oil way structure drives 2 the fork arm 1 lift and move, the oil way structure includes: 2 first hydraulic cylinder 2 for adjusting the interval of 2 the fork arm 1, first support 3 for the installation of the fork arm 1, 2 second hydraulic cylinder 4 for adjusting the height of the fork arm 1, second support 5 for the installation of the second hydraulic cylinder 4, 2 third hydraulic cylinder 6 for adjusting the inclination of the fork arm 1, 2 first hydraulic cylinder 2 horizontal arrangement, each connection 1 the fork arm 1 is used for adjusting the interval of fork arm 1, ensures that the fork truck can stably hold different size goods, 2 second hydraulic cylinder 4 vertical arrangement is connected with first support 3, is used for adjusting the height of the fork arm 1, makes the fork truck can adapt to the carrying demand of different height, the third hydraulic cylinder 6 is hinged on the fork truck.

[0024] Wherein, the first support 3 provides the installation platform for the fork arm 1, and simultaneously serves as the hinge point of the first hydraulic cylinder 2, ensuring the stability and accuracy of the interval adjustment of the fork arm 1.

[0025] Wherein, the second support 5 provides the installation platform for the second hydraulic cylinder 4, and simultaneously supports the sliding installation of the first support 3, increasing the flexibility of the fork truck in height adjustment.

[0026] Further, the two fork arms 1 are sleeved on a transversely arranged limiting frame 7, the limiting frame 7 is fixed on the first support 3, the two first hydraulic cylinders 2 are hinged on the first support 3, and the first hydraulic cylinders 2 are hinged with the fork arms 1; by sleeving the fork arms 1 on the limiting frame 7 fixed on the first support 3, the stability and accuracy of the fork arms 1 in horizontal movement are ensured, and the shaking or deviation of the fork arms 1 in the interval adjustment process is prevented.

[0027] Further, the second hydraulic cylinder 4 is arranged at the rear side of the first support 3, and the second hydraulic cylinder 4 is fixed on the second support 5; this design enables the second hydraulic cylinder 4 to more effectively support and adjust the height of the first support 3 and the fork arms 1 thereon, while maintaining the compactness and stability of the fork truck structure.

[0028] Further, the first support 3 is slidingly installed on the second support 5; the sliding installation design increases the flexibility and range of the fork truck in height adjustment, enabling the fork truck to adapt to more different carrying requirements.

[0029] Further, the second hydraulic cylinder 4 is connected with a roller shaft 8, and a track 9 is covered on the roller shaft 8; one end of the track 9 is fixed with the second support 5, and the other end is fixed with the first support 3; the design of the roller shaft 8 and the track 9 further enhances the stability and supporting force of the fork truck in the height adjustment process, while reducing friction and wear, prolonging the service life of the fork truck.

[0030] Furthermore, a third support 10 is provided on one side of the second support 5; the second support 5 is slidably installed on the third support 10; this increases the flexibility and stability of the forklift in its overall structure, enabling the forklift to better adapt to complex terrain and handling environments.

[0031] Furthermore, two fourth hydraulic cylinders 11 are installed on the third support 10; the two fourth hydraulic cylinders 11 are vertically arranged, and the four hydraulic cylinders act on the second support 5; the addition of the fourth hydraulic cylinders 11 provides the forklift with additional support and stability, which is especially important when carrying heavy objects or handling complex terrain.

[0032] Furthermore, one end of the third hydraulic cylinder 6 is hinged to the third bracket 10; by hinged to the other end of the third hydraulic cylinder 6 on the forklift 10, precise adjustment of the tilt angle of the fork arm 1 is achieved, while maintaining the stability and compactness of the forklift structure.

[0033] Working principle: When handling goods of different sizes, the distance between the two fork arms 1 can be precisely adjusted by controlling the extension and retraction of the first hydraulic cylinder 2, ensuring that the forklift can stably clamp the goods; by controlling the extension and retraction of the second hydraulic cylinder 4, the first support 3 and the fork arms 1 on it can be moved up and down, thereby adjusting the height of the fork arms 1 so that the forklift can adapt to handling needs at different heights; by controlling the extension, retraction and rotation angle of the third hydraulic cylinder 6, the tilt of the fork arms 1 can be adjusted, so that the forklift can better adapt to complex terrain and goods handling needs; the design of the third support 10 and the fourth hydraulic cylinder 11 provides the forklift with additional stability, support force and lifting effect, thereby expanding the lifting range of the fork arms 1.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A two-stage free mast for a forklift, comprising two forks and a hydraulic circuit structure; the hydraulic circuit structure drives the two forks to move vertically and horizontally; characterized in that: The hydraulic circuit structure includes: two first hydraulic cylinders for adjusting the distance between the two fork arms, a first bracket for mounting the fork arms, two second hydraulic cylinders for adjusting the height of the fork arms, a second bracket for mounting the second hydraulic cylinders, and two third hydraulic cylinders for adjusting the tilt of the fork arms; the two first hydraulic cylinders are horizontally arranged and each is connected to one of the fork arms; the two second hydraulic cylinders are vertically arranged and are connected together to the first bracket; the third hydraulic cylinders are hinged to the forklift.

2. The two-stage free mast of a forklift according to claim 1, characterized in that: Two of the fork arms are sleeved on a horizontally placed limiting frame, which is fixed on the first bracket. Two of the first hydraulic cylinders are hinged to the first bracket, and the first hydraulic cylinders are hinged to the fork arms.

3. The two-stage free mast of a forklift according to claim 1, characterized in that: The second hydraulic cylinder is located on the rear side of the first bracket and is fixed on the second bracket.

4. The two-stage free mast of a forklift according to claim 3, characterized in that: The first bracket is slidably mounted on the second bracket.

5. The two-stage free mast of a forklift according to claim 4, characterized in that: The second hydraulic cylinder is connected to a roller, and the roller is covered with a track; one end of the track is fixed to the second bracket, and the other end is fixed to the first bracket.

6. The two-stage free mast of a forklift according to claim 1, characterized in that: A third bracket is provided on one side of the second bracket; the second bracket is slidably mounted on the third bracket.

7. The two-stage free mast of a forklift according to claim 6, characterized in that: Two fourth hydraulic cylinders are installed on the third support; the two fourth hydraulic cylinders are vertically arranged and act on the second support.

8. The two-stage free mast of a forklift according to claim 6, characterized in that: One end of the third hydraulic cylinder is hinged to the third bracket.

Images