CN205204780U - Unipolar transmission lift trailer - Google Patents

Abstract

The utility model relates to a single-axis transmission lifting trailer, which includes a chassis, a universal wheel, a base, a connecting seat, a platform, an actuator, a lower connecting rod group, a lower support arm, an upper connecting rod group and an upper support arm. , the lower support arm and the upper and lower link groups respectively constitute two sets of parallelogram mechanisms to ensure that the platform always rises horizontally along a straight line. The crank slider mechanism ensures the coordinated movement of the upper and lower arms, and the overall movement of the trailer provides force through the hydraulic cylinder to drive the platform to lift vertically. The lifting trailer of the utility model adopts the hydraulic cylinder to provide greater power to ensure effective force transmission, and the single hydraulic cylinder can reduce the cost and reduce the space required for the trailer, and the folding arm force transmission of the utility model is adopted. The structure reduces the movable joints and improves the reliability of the system.

Description

A single-shaft transmission lifting trailer

technical field

The utility model relates to a lifting mechanism, in particular to a single-shaft transmission lifting trailer.

Background technique

The lifting mechanism is mostly used for raising and lowering trailer-type equipment, and its practical application pays more attention to the stability, carrying capacity, lifting capacity, space occupation and maintainability of the mechanism. Traditional lifting mechanisms are divided into two categories, one is a fork lift truck (as shown in Figure 1), and the other is a straight lift trailer (as shown in Figure 2).

The fork lift trailer is a type of trailer that is often used. In order to ensure the movement space of the fork, the fork lift structure requires the trailer platform to have a certain length and provide the stroke of the fork lift. Therefore, the trailer The overall volume is large, and it takes up a lot of space, and there are many joints that need to be lubricated and maintained for smooth use and maintenance.

The lift trailer is a structure that uses chain transmission to lift it vertically. The lift trailer with a chain mechanism has a large platform, low platform stability, heavy trailer overall, and takes up a lot of space.

Contents of the invention

The purpose of the utility model is to provide a single-shaft transmission lifting trailer, which solves the problems that the current lifting mechanism trailer occupies a large space, the platform stability is low, and the weight of the whole vehicle is overweight.

In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a single-axis transmission lifting trailer, including a chassis, a universal wheel, a base, a connecting seat, a platform, an actuator, a lower connecting rod group, a lower support arm, an upper Linkage and upper arm,

The universal wheels are mounted on the four corners of the chassis;

The base is welded on the opposite side of the universal wheel installation surface of the chassis;

One end of the lower link set is hinged to the base, and one end of the lower arm is also hinged to the base; the other end of the lower link set is hinged to the connecting seat, and the lower arm The other end of the other end is also hinged on the connecting seat; the lower link group and the lower arm form a first four-bar linkage mechanism;

One end of the upper link set is hinged on the platform, and one end of the upper arm is also hinged on the platform; the other end of the upper link set is hinged on the connecting seat, and the upper arm is also hinged on the platform; The other end of the support arm is also hinged on the connecting seat, and the upper link group and the upper support arm form a second four-bar linkage mechanism;

There is also a crank at the other end of the lower arm and the upper arm, and a chute is also provided on the connecting seat, the crank of the lower arm is hinged with the crank of the upper arm and placed on the In the chute, two crank slider structures are formed;

The actuator is installed on the other side of the chassis, and the action point of the actuator acts on the lower arm;

The retraction of the actuator drives the lower arm to rotate around the base, so that the first four-bar linkage mechanism moves, and the crank slider structure formed by the lower arm and the chute will rotate Converted into translation, the crank link mechanism formed by the upper support arm and the chute converts translation into rotation, so that the second four-bar linkage mechanism moves, thereby driving the lifting of the platform.

Further, the first four-bar linkage mechanism is a parallelogram linkage mechanism.

Further, the second four-bar linkage mechanism is a parallelogram linkage mechanism.

Further, the lower link set includes two lower links.

Further, the upper link set includes two upper links.

Further, the lower support arm is also provided with a boss.

Further, the actuator is a hydraulic actuator, and the number is one.

The utility model relates to a single-axis transmission lifting trailer. The upper and lower support arms and the upper and lower connecting rod groups are respectively formed into two sets of parallelogram mechanisms to ensure that the platform always rises horizontally along a straight line, and the upper and lower support arms are connected. In the connection seat, two sets of crank slider mechanisms sharing the same slider are used at the connection to ensure the coordinated movement of the upper and lower arms. The overall movement of the trailer provides force through the hydraulic cylinder to drive the arm platform vertically. By adopting the folding arm force transmission structure of the utility model, movable joints are reduced, and system reliability is improved.

Description of drawings

The accompanying drawings, which are incorporated in the specification and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and are used together with the specification to explain the principle of the utility model.

Fig. 1 is the schematic diagram of fork lift truck;

Fig. 2 is the schematic diagram of lift trailer;

Fig. 3 is a schematic structural view of a single-shaft transmission lifting trailer according to this embodiment;

Fig. 4 is a schematic diagram of the structure of the connecting seat of the single-shaft transmission lifting trailer according to the present embodiment;

Fig. 5 is a cross-sectional view of the connecting seat of the single-shaft transmission lifting trailer according to the present embodiment;

Among them, 1 is the chassis, 2 is the universal wheel, 3 is the base, 4 is the connecting seat, 5 is the platform, 6 is the actuator, 7 is the lower link group, 8 is the lower arm, and 9 is the upper link group , 10 is an upper support arm.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model more clear, the technical solution in the utility model embodiment will be described in more detail below in conjunction with the accompanying drawings in the utility model embodiment. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some embodiments of the present utility model, but not all embodiments. The embodiments described below with reference to the figures are exemplary and are intended to explain the present invention, but should not be construed as limitations of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. Embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

In describing the present invention, it should be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present utility model.

As shown in Figures 3 to 5, the specific structure and composition of the single-axis transmission lifting trailer of the present invention include a chassis 1, a universal wheel 2, a base 3, a connecting seat 4, a platform 5, an actuator 6, and a lower connecting rod Group 7, lower support arm 8, upper link group 9 and upper support arm 10. The four universal wheels 2 are respectively installed on the four corners of the bottom surface of the chassis 1; the base 3 is welded on the top of the chassis 1 (opposite the installation surface of the universal wheels 2) and is in the middle right of the chassis 1, ensuring that the lower arm 8 After the left end is hinged with the base 3 and placed horizontally, the lower support arm 8 will not exceed the left side of the chassis 1 . The right ends of the lower link group 7 and the lower arm 8 are respectively hinged on the base 3, and there are two hinge points, and the left ends of the lower link group 7 and the lower arm 8 are respectively hinged on the connecting seat 4, and the hinge points are also two. One, the first parallelogram linkage mechanism is formed by the lower link group 7, the lower support arm 8 and four hinge points; the right ends of the upper link group 9 and the upper support arm 10 are respectively hinged on the platform 5, and the hinge points are Two, the right end of the upper link group 9 and the upper arm 10 are respectively hinged on the connecting seat 4, and there are two hinge points, the second one is formed by the upper link group 9, the upper arm 10 and four hinge points. Parallelogram linkage. The left end of the lower support arm 8 and the right end of the upper support arm 10 also have a curved crank, and the inside of the connecting seat 4 is also provided with a chute, and the crank of the lower support arm 8 and the crank of the upper support arm 10 are hinged and placed in the chute. The hinge point is a pin shaft slider and the hinge hole at the hinge point of the crank is oval, and the pin shaft slide block has a movable space in the oval hinge hole. The actuator 6 is installed on the top of the chassis 1 , and the action point of the actuator 6 acts on the lower support arm 8 .

The working principle of the utility model is as follows, the hydraulic actuator 6 acts on the lower arm 8, when the hydraulic actuator 6 is working, it withstands the lower arm 8, the parallelogram formed by the lower arm 8 and the lower connecting rod group 7 The link mechanism will move around the hinge point on the base 3 , and the lower support arm 8 and the lower link group 7 will also move around the hinge point hinged on the connecting base 4 . When the lower arm 8 moves around the hinge point on the connecting seat 4, the crank of the lower arm 8 and the pin slider will move along the chute on the connecting seat 4, and the pin slider will drive the upper arm 10. The crank moves, and then the upper support arm 10 moves around the hinge point on the connecting seat 4, so that the parallelogram linkage mechanism formed by the upper support arm 10 and the upper link group 9 moves to drive the platform 5 to rise. Due to the adoption of two parallelogram structures, the connecting seat 4 can only move up and down when the base 3 does not move, which causes the plane of the platform 5 to remain horizontal all the time. When the lift trailer is folded, the principle is the same as when it is raised.

It should be understood that the single-shaft transmission lifting trailer of the present invention also has a handle not shown in the figure, the handle is connected with the chassis 1 of the trailer, and the handle is pushed to move the car during use. In addition, the lower connecting rod group 7 of the present invention includes 2 lower connecting rods, the upper connecting rod group 9 includes 2 lower connecting rods, and the projections of the 2 upper connecting rods or the 2 lower connecting rods on the vertical plane completely overlap , Using 2 lower links can improve the stability of the lifting mechanism. There is also a boss at the position of the lower support arm 8 close to the base 3, and the boss faces the direction of the platform 5. When the lift trailer is completely folded, the platform 5 falls above the base 3, and the boss contacts the upper support arm 10 and withstands the upper support arm 10. . The actuator 6 adopts a hydraulic actuator 6 and the number is one, and only one hydraulic cylinder can provide the required power, which saves space and reduces the total weight of the trailer.

In the single-axis transmission lifting trailer of the present invention, the upper support arm 10, the lower support arm 8, the upper connecting rod group 9, and the lower connecting rod group 7 are respectively formed into two sets of parallelogram mechanisms to ensure that the platform 5 is always horizontal and along a straight line. Ascent, the upper support arm 10 and the lower support arm 8 are connected to the connecting seat 4, and two sets of crank slider mechanisms sharing the same pin shaft slider are used at the joint to ensure the coordinated movement of the upper support arm 10 and the lower support arm 8. The overall movement provides force through the hydraulic cylinder 6 to drive the platform 5 to lift vertically. The adoption of the hydraulic actuator 6 can provide greater power to ensure effective force transmission, and the single hydraulic actuator 6 can reduce the cost and reduce the space required for the trailer, and the folding arm force transmission structure of the utility model reduces the movement joints, improving system reliability.

The above is only the best specific implementation of the utility model, but the scope of protection of the utility model is not limited thereto, any skilled person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (7)

1. a single shaft transmission lifting trailer, it is characterized in that, comprise chassis (1), cardan wheel (2), base (3), Connection Block (4), platform (5), pressurized strut (6), lower link group (7), lower branch arm (8), upper linkage rod group (9) and upper branch arm (10)

Described cardan wheel (2) is installed on four angles on described chassis (1);

Described base (3) is welded on the opposite of cardan wheel (2) attachment face of described chassis (1);

One end of described lower link group (7) is articulated with described base (3), and one end of described lower branch arm (8) is also articulated with described base (3); The other end of described lower link group (7) is articulated with on described Connection Block (4), and the other end of described lower branch arm (8) is also articulated with on described Connection Block (4); Described lower link group (7) and described lower branch arm (8) form the first four-bar linkage;

One end of described upper linkage rod group (9) is articulated with on described platform (5), and one end of described upper branch arm (10) is also articulated with on described platform (5); The other end of described upper linkage rod group (9) is articulated with on described Connection Block (4), the other end of described upper branch arm (10) is also articulated with on described Connection Block (4), and described upper linkage rod group (9) and described upper branch arm (10) form the second four-bar linkage;

Described lower branch arm (8) also has crank with the other end of described upper branch arm (10), (4) are also provided with chute to described Connection Block, the crank of described lower branch arm (8) and the crank of described upper branch arm (10) hinged and be placed in described chute, form two brace and connecting rod frameworks;

Described pressurized strut (6) is arranged on one side identical with base on described chassis, and the point of action of described pressurized strut (6) acts on described lower branch arm (8);

Described lower branch arm (8) is driven to rotate around described base (3) by the folding and unfolding of described pressurized strut (6), make described first parallel motion, rotation is converted into translation by the brace and connecting rod framework that described lower branch arm (8) and described chute are formed, translation is converted into rotation by the piston crank mechanism that described upper branch arm (10) and described chute are formed, make described second parallel motion, thus drive the lifting of described platform (5).

2. a kind of single shaft transmission lifting trailer according to claim 1, it is characterized in that, described first four-bar linkage is parallelogram linkage.

3. a kind of single shaft transmission lifting trailer according to claim 1, it is characterized in that, described second four-bar linkage is parallelogram linkage.

4. a kind of single shaft transmission lifting trailer according to claim 1, it is characterized in that, described lower link group (7) comprises 2 lower links.

5. a kind of single shaft transmission lifting trailer according to claim 1, it is characterized in that, described upper linkage rod group (9) comprises 2 upper connecting rods.

6. a kind of single shaft transmission lifting trailer according to claim 1, it is characterized in that, described lower branch arm (8) is also provided with boss.

7. a kind of single shaft transmission lifting trailer according to claim 1, it is characterized in that, described pressurized strut (6) is hydraulic actuator, and quantity is 1.