Compact carrier

Abstract

The utility model relates to the technical field of carriers, and particularly discloses a compact carrier which comprises a frame assembly and a lifting assembly, the frame assembly comprises a rear frame, a front frame and a fork, the front frame is connected with the rear frame in a liftable mode, one end of the fork is connected with the bottom of the front side of the front frame, and the other end of the fork is connected with the lifting assembly. The lifting assembly comprises a first swing arm, a second swing arm, a driving oil cylinder and a connecting rod, the driving oil cylinder is hinged to the pallet fork and located below the front frame, one end of the first swing arm and one end of the second swing arm are simultaneously hinged to one end of the driving oil cylinder, the other end of the first swing arm is hinged to the rear frame, and the other end of the second swing arm is hinged to the front frame. When the driving oil cylinder acts, the driving oil cylinder can drive the first swing arm and the second swing arm to swing, due to the fact that the driving oil cylinder and the second swing arm are mutually independent, the first swing arm can be used for supporting the second swing arm, then the front frame is supported, the supporting requirement is met, the driving oil cylinder does not need to be arranged in the rear frame, the occupied space of a vehicle body is reduced, and the overall structure is more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of transport vehicles, in particular to a compact transport vehicle. Background Art

[0002] A transport truck refers to a logistics handling equipment that is used to transport goods. Due to its excellent short-distance handling performance, it is widely used in factories and logistics stations. A forklift is a more common transport truck. It inserts the fork into the bottom of the goods, and then the hydraulic system drives the fork to move up and down to achieve the lifting and lowering of the goods.

[0003] In the prior art, the frame of the forklift includes a rear frame and a front frame, the fork is fixed on the front frame, and a lifting cylinder is arranged in the rear frame. The lifting cylinder is arranged obliquely so that it can support the front frame for lifting and lowering movements, thereby driving the fork for lifting and lowering movements. At the same time, a swing arm is provided between the rear frame and the front frame, and a connecting rod is provided between the wheel frame at the bottom of the fork and the swing arm. When the front frame is lifted and lowered, the swing arm is driven to swing, and the wheel frame is driven to move synchronously through the connecting rod, so that it can support the fork. However, since the lifting cylinder needs to play a supporting role, it must be arranged obliquely in the rear frame, which occupies a large space in the vehicle body and cannot meet the needs of a compact transporter. Summary of the invention

[0004] The utility model is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide a compact transport vehicle. By separating the first swing arm and the second swing arm into a separate design, the first swing arm and the second swing arm can play a supporting role, so that the driving cylinder can be arranged under the front frame to avoid occupying the space in the vehicle body and the structure is more compact.

[0005] To achieve the above-mentioned purpose, the utility model provides a compact transport vehicle, including a frame assembly, which includes a rear frame, a front frame and a fork, wherein the front frame is liftably connected to the rear frame, one end of the fork is connected to the bottom of the front side of the front frame, and the bottom of the fork is provided with a supporting wheel group hinged on the fork, and also includes a lifting assembly, the lifting assembly includes a first swing arm, a second swing arm, a driving cylinder and a connecting rod,

[0006] The driving cylinder is hinged on the fork and is located below the front frame. One end of the first swing arm and the second swing arm are hinged to one end of the driving cylinder at the same time. The other end of the first swing arm is hinged to the rear frame. The other end of the second swing arm is hinged to the front frame. One end of the connecting rod is hinged to the supporting wheel set, and the other end of the connecting rod is hinged to the other end of the driving cylinder.

[0007] According to the compact transport vehicle described above, the driving cylinder can be arranged below the front frame in the horizontal direction, and the driving cylinder is provided with a first piston rod and a second piston rod, and the first piston rod and the second piston rod are integrally formed;

[0008] One end of the first piston rod is hinged to the first swing arm and one end of the second swing arm at the same time, and the second piston rod is hinged to one end of the connecting rod.

[0009] According to the compact transport vehicle described above, the length of the first swing arm is greater than the length of the second swing arm.

[0010] According to the compact transport vehicle described above, the rear frame is provided with a first hinge point hinged to the first swing arm, the front frame is provided with a second hinge point hinged to the second swing arm, and the lowest height of the second hinge point is higher than the height of the first hinge point.

[0011] According to the compact transport vehicle described above, the first piston rod is provided with a third hinge point hinged to the first swing arm and the second swing arm, the height of the third hinge point is higher than the height of the first hinge point, and the height of the third hinge point is lower than the height of the second hinge point.

[0012] According to the compact transporter described above, a shell is provided on the outer side of the driving cylinder, and the middle part of the shell is hinged to the fork.

[0013] According to the compact transport vehicle described above, the supporting wheel group includes a supporting wheel and a wheel frame, one end of the wheel frame is hinged to the fork, the supporting wheel is fixed to the other end of the wheel frame, and one end of the connecting rod is hinged to the wheel frame.

[0014] According to the compact transport vehicle described above, the rear frame is provided with a guide groove arranged in the vertical direction, and the front frame is provided with a roller, and the roller is movably clamped in the guide groove.

[0015] According to the compact transport vehicle described above, the frame assembly further includes a driving wheel, and the driving wheel is mounted on the rear side of the rear frame.

[0016] The utility model has the following beneficial effects: the first swing arm and the second swing arm are designed to be separated, wherein one end of the first swing arm is hinged to the rear frame, one end of the second swing arm is hinged to the front frame, and the other ends of the first swing arm and the second swing arm are connected to the piston rod at one end of the driving cylinder. When the driving cylinder drives the first swing arm and the second swing arm to swing simultaneously, the first swing arm and the second swing arm can play a supporting role for the front frame, so there is no need to fix the driving cylinder to the rear frame to support the front frame. Therefore, the driving cylinder is hinged to the fork and is located below the front frame, so it does not occupy the space in the vehicle body, and the overall structure of the transport vehicle can be designed to be more compact. At the same time, it can play the role of connecting the swing arm and the connecting rod, which can shorten the length of the connecting rod and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0018] Figure 2 It is a schematic structural diagram of the front frame of the embodiment in the highest position.

[0019] In the figure:

[0020] 1. Frame assembly; 11. Rear frame; 111. Guide groove; 12. Front frame; 121. Roller; 13. Fork; 131. Support wheel assembly; 131a. Support wheel; 131b. Wheel frame; 14. Drive wheel;

[0021] 2. Lifting assembly; 21. First swing arm; 22. Second swing arm; 23. Driving cylinder; 231. First piston rod; 232. Second piston rod; 24. Connecting rod. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1-2 As shown, a compact transport vehicle includes a frame assembly 1 and a lifting assembly 2.

[0024] Specifically, the frame assembly 1 includes a rear frame 11, a front frame 12 and a fork 13. The front frame 12 is liftably arranged on the rear frame 11 and connected to the rear frame 11. The tail end of the fork 13 is connected to the bottom of the front side of the front frame 12, and the bottom of the fork 13 is provided with a supporting wheel group 131 hinged on the fork 13. The front frame 12 can drive the fork 13 to perform lifting and lowering movements, thereby adjusting the height of the fork 13. When adjusting the height of the fork 13, the supporting wheel group 131 needs to be rotated to adjust the height of the supporting wheel group 131, so as to maintain the support of the fork 13.

[0025] In this embodiment, the lifting assembly 2 includes a first swing arm 21, a second swing arm 22, a driving cylinder 23 and a connecting rod 24. The driving cylinder 23 is hinged on the fork 13 and is located below the front frame 12. The driving cylinder 23 does not need to occupy the space in the vehicle body, thereby reducing the vehicle body space and making the transport vehicle more compact as a whole. In order to support the front frame 12, the swing arm is separated into a first swing arm 21 and a second swing arm 22. One end of the first swing arm 21 and the second swing arm 22 are hinged to one end of the driving cylinder 23 at the same time. The other end of the first swing arm 21 is hinged to the rear frame 11, and the other end of the second swing arm 22 is hinged to the front frame 12. When the driving cylinder 23 is in motion, it can drive the first swing arm 21 and the second swing arm 22 at the same time. Swing, since they are independent of each other, the first swing arm 21 can be used to provide support for the second swing arm 22, and then to provide support for the front frame 12, meeting the support requirements, and then the position change of the driving cylinder 23 can be realized. At the same time, one end of the connecting rod 24 is hinged to the supporting wheel group 131, and the other end of the connecting rod 24 is hinged to the other end of the driving cylinder 23. When the driving cylinder 23 drives the first swing arm 21 and the second swing arm 22 to move, it can synchronously drive the connecting rod 24 to move, and drive the supporting wheel group 131 to rotate up and down along the fork 13 through the connecting rod 24, and adjust the height of the supporting wheel group 131 to support the fork 13. At the same time, since the driving cylinder 23 is located between the connecting rod 24, the first swing arm 21 and the second swing arm 22, it can reduce the length of the connecting rod 24.

[0026] Specifically, the driving cylinder 23 can be arranged below the front frame 12 in the horizontal direction, and a first piston rod 231 and a second piston rod 232 are provided on the driving cylinder 23. One end of the first piston rod 231 is hinged to one end of the first swing arm 21 and the second swing arm 22 at the same time, and the second piston rod 232 is hinged to one end of the connecting rod 24. The first piston rod 231 can drive the first swing arm 21 and the second swing arm 22 to move simultaneously, and the second piston rod 232 can drive the connecting rod 24 to move. In order to ensure that the first piston rod 231 and the second piston rod 232 move synchronously, the first piston rod 231 and the second piston rod 232 are formed as one piece.

[0027] Specifically, the length of the first swing arm 21 is set to be greater than the length of the second swing arm 22 .

[0028] In order to achieve the support of the second swing arm 22 by the first swing arm 21, a first hinge point hinged to the first swing arm 21 is provided on the rear frame 11, and a second hinge point hinged to the second swing arm 22 is provided on the front frame 12. The lowest height of the second hinge point is higher than the height of the first hinge point. Since the front frame 12 as a whole can be raised and lowered, the second hinge point can also move accordingly. However, as long as the height of the first hinge point is kept lower than the height of the second hinge point, the height of the first swing arm 21 can be lower than the height of the second swing arm 22, which is convenient for the first swing arm 21 to support the second swing arm 22. At the same time, a third hinge point hinged to the first swing arm 21 and the second swing arm 22 is provided on the first piston rod 231. The height of the third hinge point is higher than the height of the first hinge point, and the height of the third hinge point is lower than the height of the second hinge point, that is, the third hinge point is located between the first hinge point and the second hinge point in the vertical direction.

[0029] In order to install the driving cylinder 23, a shell is provided on the outside of the driving cylinder 23, and the middle part of the shell is hinged to the fork 13 to facilitate the rotation of the driving cylinder 23 during operation and to better apply the force.

[0030] Specifically, the supporting wheel group 131 includes a supporting wheel 131a and a wheel frame 131b, one end of the wheel frame 131b is hinged on the fork 13, the supporting wheel 131a is fixed on the other end of the wheel frame 131b, one end of the connecting rod 24 is hinged to the wheel frame 131b, and the support wheel 131a is installed and positioned through the wheel frame 131b, and its rotation can adjust the height of the supporting wheel 131a.

[0031] In order to guide the lifting and lowering of the front frame 12, a guide groove 111 arranged in the vertical direction is provided on the rear frame 11, and a roller 121 is provided on the front frame 12. The roller 121 is movably clamped in the guide groove 111. During the lifting and lowering process of the front frame 12, the roller 121 is restricted to only roll up and down in the guide groove 111, and can also play a limiting role on the front frame 12.

[0032] In order to drive the transport vehicle as a whole, the frame assembly 1 further includes a driving wheel 14 , which is mounted on the rear side of the rear frame 11 . The driving wheel 14 can drive the transport vehicle as a whole to move, thereby transporting goods.

[0033] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, and the described embodiments are used to help understand the idea of ​​the utility model. The specific embodiments described herein are merely examples of the spirit of the utility model. A person skilled in the art of the utility model may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but this will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A compact transport vehicle, comprising a frame assembly, which includes a rear frame, a front frame and a fork, wherein the front frame is liftably connected to the rear frame, one end of the fork is connected to the bottom of the front side of the front frame, and the bottom of the fork is provided with a supporting wheel assembly hinged on the fork, characterized in that: It also includes a lifting assembly, which includes a first swing arm, a second swing arm, a driving cylinder and a connecting rod. The driving cylinder is hinged on the fork and is located below the front frame. One end of the first swing arm and the second swing arm are hinged to one end of the driving cylinder at the same time. The other end of the first swing arm is hinged to the rear frame. The other end of the second swing arm is hinged to the front frame. One end of the connecting rod is hinged to the supporting wheel set, and the other end of the connecting rod is hinged to the other end of the driving cylinder.

2. A compact transport vehicle according to claim 1, characterized in that: The driving oil cylinder may be arranged below the front frame in a horizontal direction, and a first piston rod and a second piston rod are provided on the driving oil cylinder, and the first piston rod and the second piston rod are integrally formed; One end of the first piston rod is hinged to the first swing arm and one end of the second swing arm at the same time, and the second piston rod is hinged to one end of the connecting rod.

3. A compact transport vehicle according to claim 1 or 2, characterized in that: The length of the first swing arm is greater than the length of the second swing arm.

4. A compact transport vehicle according to claim 2, characterized in that: The rear frame is provided with a first hinge point hinged to the first swing arm, the front frame is provided with a second hinge point hinged to the second swing arm, and the lowest height of the second hinge point is higher than the height of the first hinge point.

5. A compact transport vehicle according to claim 4, characterized in that: The first piston rod is provided with a third hinge point hinged to the first swing arm and the second swing arm. The height of the third hinge point is higher than the height of the first hinge point, and the height of the third hinge point is lower than the height of the second hinge point.

6. The compact transport vehicle according to claim 1, characterized in that: A shell is provided on the outer side of the driving oil cylinder, and the middle part of the shell is hinged to the fork.

7. The compact transport vehicle according to claim 1, characterized in that: The supporting wheel group comprises a supporting wheel and a wheel frame, one end of the wheel frame is hinged on the fork, the supporting wheel is fixed on the other end of the wheel frame, and one end of the connecting rod is hinged to the wheel frame.

8. The compact transport vehicle according to claim 1, characterized in that: The rear frame is provided with a guide groove arranged in a vertical direction, and the front frame is provided with a roller, and the roller is movably clamped in the guide groove.

9. The compact transport vehicle according to claim 1, characterized in that: The frame assembly further comprises a driving wheel mounted on the rear side of the rear frame.

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