CN220033919U - Obstacle surmounting walking forklift - Google Patents

Abstract

The utility model discloses an obstacle crossing walking forklift which comprises a power tractor, a push rod, an obstacle crossing mechanism and a fork arm, wherein the power tractor is used for driving the forklift to advance, the push rod is in driving connection with the power tractor, the obstacle crossing mechanism is connected with the push rod and used for assisting the forklift to surmount an obstacle, the fork arm is fixedly connected with the obstacle crossing mechanism and arranged on the obstacle crossing mechanism, the obstacle crossing mechanism comprises a supporting swing rod, a mounting plate, a long obstacle crossing module and a short obstacle crossing module, the supporting swing rod is connected with the push rod through a rotating shaft, the supporting swing rod is enabled to swing up and down around the rotating shaft to realize the lifting and retracting actions of the fork arm, the mounting plate is connected with the supporting swing rod through a middle rotating shaft, one end of the long obstacle crossing module is connected with the mounting plate, and when the fork arm is lifted up, the long obstacle crossing module is in an inclined state to generate a guide surface, and the short obstacle crossing module is connected with the mounting plate and used for assisting to complete the final obstacle crossing action of the forklift. The obstacle crossing walking forklift solves the problem of insufficient obstacle crossing capability of the traditional forklift, can be suitable for different working conditions, and is labor-saving and efficient.

Description

Obstacle surmounting walking forklift

Technical Field

The utility model relates to the field of walking forklifts, in particular to an obstacle-surmounting walking forklift.

Background

At present, a T-shaped forklift needs to meet the requirement of lifting a general pallet, and the height of the lowest lifting position of the pallet is 90mm (calculated from the ground), so that the lowest position of a fork arm needs to be lowered to a height below 85 mm. This requires that the diameter of the wheel mounted on the fork arms should not exceed 80mm. According to the stress analysis of obstacle surmounting, the radius of the wheels is more than 2 times of the height of the obstacle in general, so that the obstacle surmounting can be realized more stably. Therefore, the obstacle crossing height of the conventional T-shaped forklift is relatively stable within 20mm, but the movable area of the forklift is limited greatly due to the obstacle crossing capability.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an obstacle-surmounting walking forklift.

The technical scheme adopted for solving the technical problems is as follows: the obstacle crossing walking forklift comprises a power tractor obstacle crossing walking forklift for driving the forklift to advance, a push rod hinged with the power tractor obstacle crossing walking forklift, an obstacle crossing mechanism connected with the push rod and used for assisting the forklift to surmount an obstacle, and a fork arm fixedly connected with the obstacle crossing mechanism;

the obstacle crossing mechanism comprises a supporting swing rod, a mounting plate, a long obstacle crossing module and a short obstacle crossing module;

the supporting swing rod is connected with the push rod through a rotating shaft, so that the supporting swing rod swings up and down around the rotating shaft to realize the lifting and retracting actions of the fork arm;

the mounting plate is connected with the supporting swing rod through a middle rotating shaft;

one end of the long obstacle crossing module is connected with the mounting plate, and when the fork arm is lifted, the long obstacle crossing module is in an inclined state to generate a guide surface;

the short obstacle crossing module is connected with the mounting plate and used for assisting in completing the final obstacle crossing action of the forklift.

In some embodiments, the obstacle surmounting mechanism further comprises a pair of guide sliding blocks, one end of the long obstacle surmounting module, which is far away from the mounting plate, is connected with the pair of guide sliding blocks through a sliding shaft, and the guide sliding blocks are connected with the fork arms through fasteners;

the guide sliding block is provided with a strip-shaped through hole for installing the sliding shaft.

In some embodiments, the long obstacle surmounting module comprises a pair of long obstacle surmounting connecting frames, a plurality of reinforcing cross beams and a plurality of long obstacle surmounting wheels rotatably connected with the long obstacle surmounting connecting frames;

the reinforcing cross beams are arranged on one side, close to the guide sliding block, of the long obstacle crossing connecting frame;

the long obstacle crossing wheels are arranged on one side, close to the mounting plate, of the long obstacle crossing connecting frame, the long obstacle crossing wheels are distributed along the length direction of the long obstacle crossing connecting frame, and every two adjacent long obstacle crossing wheels are arranged in a staggered mode.

In some embodiments, one end of the long obstacle surmounting module is rotatably connected with the mounting plate through a left rotating shaft;

the short obstacle crossing module is fixedly connected with the mounting plate through the middle rotating shaft and the right rotating shaft.

In some embodiments, the central axes of the left, middle and right rotational axes are on the same plane.

In some embodiments, the obstacle crossing mechanism further comprises a traveling wheel assembly arranged at the bottom end of the mounting plate, wherein the traveling wheel assembly comprises a front traveling wheel and a rear traveling wheel, and the front traveling wheel is arranged at one side close to the long obstacle crossing module.

In some embodiments, the short obstacle surmounting module comprises a pair of short obstacle surmounting connection frames and a plurality of short obstacle surmounting wheels rotatably connected with the short obstacle surmounting connection frames;

the short obstacle crossing wheels are distributed along the length direction of the short obstacle crossing connecting frame, and each two adjacent short obstacle crossing wheels are arranged in a staggered mode.

In some embodiments, the short obstacle-surmounting wheels are provided on both sides of the road wheel assembly; or alternatively

The short obstacle crossing wheel is arranged in the movable space of the travelling wheel assembly in an avoiding mode.

In some embodiments, the short obstacle crossing connecting frame is provided with a limiting piece for limiting the supporting swing rod.

In some embodiments, the obstacle-surmounting walking forklift further comprises a swinging rod, one end of the swinging rod is hinged to the power tractor obstacle-surmounting walking forklift, the other end of the swinging rod is hinged to the push rod, and the fork arm is connected with the swinging rod through a central shaft;

one side of the fork arm far away from the central shaft is connected with the supporting swing rod through a walking shaft.

The implementation of the utility model has the following beneficial effects: the obstacle crossing walking forklift enhances obstacle crossing capability, solves the problem of insufficient obstacle crossing capability of the traditional forklift, can be suitable for different working conditions, and is labor-saving and efficient.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings:

FIG. 1 is a schematic internal perspective view of an obstacle surmounting walking forklift in accordance with some embodiments of the present utility model;

FIG. 2 is a schematic diagram of the structure of an obstacle detouring mechanism in some embodiments of the utility model;

FIG. 3 is a schematic view of an obstacle surmounting walking forklift in accordance with some embodiments of the present utility model in normal walking;

FIG. 4 is a schematic bottom view of a barrier-surmounting walking forklift in some embodiments of the present utility model;

FIG. 5 is a schematic diagram of the structure of a long obstacle detouring module in some embodiments of the utility model;

FIG. 6 is a schematic illustration of the arrangement of the long obstacle detouring wheel of FIG. 5 in some embodiments of the utility model;

FIG. 7 is a schematic diagram of the structure of a short obstacle detouring module in some embodiments of the utility model;

FIG. 8 is a first schematic view of an obstacle-surmounting truck traversing an obstacle in some embodiments of the utility model;

FIG. 9 is a second schematic view of an obstacle-surmounting truck in some embodiments of the utility model;

fig. 10 is a third schematic view of an obstacle-surmounting truck in some embodiments of the utility model.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 10, in some embodiments of the present utility model, the obstacle surmounting forklift may be an unmanned intelligent forklift a600T, so as to solve the problem of obstacle surmounting of the auxiliary trolley, and the obstacle surmounting forklift includes a power tractor 1 for driving the forklift forward, a push rod 2 drivingly connected to the power tractor 1, an obstacle surmounting mechanism 3 connected to the push rod 2 for assisting the forklift in surmounting, and a fork arm 4 fixedly connected to the obstacle surmounting mechanism 3, as shown in fig. 2, the obstacle surmounting mechanism 3 includes a supporting swing rod 31, a mounting plate 32, a long obstacle surmounting module 33, and a short obstacle surmounting module 34, wherein the supporting swing rod 31 is connected to the push rod 2 through a rotation shaft 311, so that the supporting swing rod 31 swings up and down around the rotation shaft 311 to realize the lifting and retracting actions of the fork arm 4, the mounting plate 32 is connected to the supporting swing rod 31 through a middle rotation shaft 322, one end of the long obstacle surmounting module 33 is connected to the mounting plate 32, and when the fork arm 4 is lifted, the long obstacle surmounting module 33 is in an inclined state to generate a guiding surface, and the short obstacle surmounting module 34 is connected to the mounting plate 32 for assisting the completion of the surmounting actions of the forklift.

It will be appreciated that because the yoke 4 needs to be in a raised and retracted condition, the obstacle detouring mechanism 3 needs to have the function of following the retraction and extension of the yoke 4. When the fork arm 4 is retracted, the long obstacle surmounting module 33 is in a horizontal state, and when the fork arm 4 is lifted, the long obstacle surmounting module 33 is in an inclined state, and a guide surface is generated to prepare for obstacle surmounting. The obstacle crossing walking forklift enhances obstacle crossing capability, solves the problem of insufficient obstacle crossing capability of the traditional forklift, can be suitable for different working conditions, and is labor-saving and efficient.

Specifically, the obstacle surmounting mechanism 3 further includes a pair of guide sliding blocks 35, one end of the long obstacle surmounting module 33, which is far away from the mounting plate 32, is connected with the pair of guide sliding blocks 35 through a sliding shaft 36, the guide sliding blocks 35 are connected with the fork arms 4 through fasteners, and the guide sliding blocks 35 are provided with strip-shaped through holes 351 for mounting the sliding shaft 36. It will be appreciated that the guide slider 35 is of a substantially plate-like structure, the bottom end of which is provided with a sliding groove for the sliding shaft 36 to be mounted and moved, and the guide slider 35 is provided at the bottom end of the yoke 4 and can be connected to the yoke 4 by a fastener, so that the yoke 4 can move along with the long obstacle surmounting module 33.

As shown in fig. 5, the long obstacle detouring module 33 includes a pair of long obstacle detouring connection frames 331, a plurality of reinforcing beams 332, and a plurality of long obstacle detouring wheels 333 rotatably connected to the long obstacle detouring connection frames 331, wherein the plurality of reinforcing beams 332 are disposed on one side of the long obstacle detouring connection frames 331 near the guide sliding block 35, which is used for reinforcing the strength and hardness of the long obstacle detouring module 33, and ensuring the stability of the long obstacle detouring module 33 when in operation. The plurality of long obstacle crossing wheels 333 are arranged on one side of the long obstacle crossing connecting frame 331 close to the mounting plate 32, as shown in fig. 6, the plurality of long obstacle crossing wheels 333 are arranged along the length direction of the long obstacle crossing connecting frame 331, each two adjacent long obstacle crossing wheels 333 are arranged in a staggered manner, the staggered arrangement between each two adjacent long obstacle crossing wheels 333 can shorten the height difference of contact point fluctuation during obstacle crossing, and the bumping amplitude of obstacle crossing is reduced. In this embodiment, a plurality of long obstacle surmounting wheels 333 are adopted to provide a plurality of fulcrums for the obstacle surmounting of the obstacle surmounting forklift, and the obstacle surmounting capability of the obstacle surmounting mechanism 3 can be further improved by combining with the rotation arrangement of the guide sliding block 35 and the mounting plate 32.

Further, one end of the long obstacle detouring module 33 is rotatably connected to the mounting plate 32 via a left rotation shaft 321, the short obstacle detouring module 34 is fixedly connected to the mounting plate 32 via a middle rotation shaft 322 and a right rotation shaft 323, and the central axes of the left rotation shaft 321, the middle rotation shaft 322 and the right rotation shaft 323 are on the same plane. It will be appreciated that the upper portion of the mounting plate 32 has a plate-like structure, and the bottom end thereof is provided with a first mounting portion for mounting the left rotating shaft 321, a second mounting portion for mounting the middle rotating shaft 322, and a third mounting portion for mounting the right rotating shaft 323, and the short obstacle detouring module 34 is disposed such that the mounting plate 32 and the short obstacle detouring module 34 maintain a parallel state during obstacle detouring.

The obstacle crossing mechanism 3 further comprises a traveling wheel assembly 37 arranged at the bottom end of the mounting plate 32, the traveling wheel assembly 37 comprises a front traveling wheel 371 and a rear traveling wheel 372, and the front traveling wheel 371 is arranged on one side close to the long obstacle crossing module 33. The front travelling wheel 371 and the rear travelling wheel 372 are separately arranged, and the front travelling wheel 371 and the rear travelling wheel 372 are all preferably universal wheels and can freely rotate, so that the obstacle crossing mechanism 3 can better adapt to obstacles 6 in various shapes when crossing obstacles, for example, the gravity center can be automatically rotated according to the shape of the obstacles 6 to adapt to the shape of the obstacles 6 so as to achieve the effect of keeping balance of the vehicle body, and the obstacle crossing capability can be further improved.

In this embodiment, the long obstacle surmounting module 33, the push rod 2 and the supporting swing rod 31 form a triangle mechanism, which is beneficial to maintaining stability, the long obstacle surmounting module 33 has a length of 900mm, and the short obstacle surmounting module 34 has a length of 156mm, which are matched according to respective sizes and structures, so that the fork arms 4 always maintain a horizontal state when surmounting an obstacle.

As shown in fig. 7, the short obstacle detouring module 34 includes a pair of short obstacle detouring connection frames 341 and a plurality of short obstacle detouring wheels 342 rotatably connected to the short obstacle detouring connection frames 341, wherein the plurality of short obstacle detouring wheels 342 are arranged along the length direction of the short obstacle detouring connection frames 341 and each adjacent short obstacle detouring wheel 342 is arranged in a staggered manner. Similarly, the offset arrangement between each adjacent short obstacle crossing wheel 342 can shorten the height difference of the contact point fluctuation during obstacle crossing, reduce the bumping amplitude of obstacle crossing, the rear end of the short obstacle crossing connecting frame 341 protrudes out of the mounting plate 32, and the long obstacle crossing wheel 333 and the short obstacle crossing wheel 342 can be made of rubber materials.

The width of the fork arm 4 is mainly affected by the movement space of the travelling wheel assembly 37 and the installation volume of the obstacle surmounting mechanism 3, the narrower the fork arm 4 is, the more flexible the forklift can work, the short obstacle surmounting module 34 and the travelling wheel assembly 37 can be arranged in two ways, the first way is that the short obstacle surmounting wheels 342 are arranged on two sides of the travelling wheel assembly 37, the middle is not disconnected, and the obstacle surmounting can be more smooth; the second arrangement is that the short obstacle crossing wheels 342 are installed in an avoidance manner in the movable space of the traveling wheel assembly 37, so that the width of the fork arm 4 is narrower, and the forklift is more flexible to operate.

Further, in order to prevent the relative rotation between the supporting swing rod 31 and the mounting plate 32 from being too large, the short obstacle crossing connecting frame 341 is provided with a limiting piece 38, and the limiting piece 38 is used for limiting the supporting swing rod 31 so as to prevent the supporting swing rod 31 from being too large in rotation angle and damaging the obstacle crossing mechanism 3, thereby improving the safety and practicability of the obstacle crossing walking forklift.

The obstacle surmounting walking forklift further comprises a swinging rod 5, one end of the swinging rod 5 is hinged to the power tractor 1, the other end of the swinging rod is hinged to the push rod 2, and the fork arm 4 is connected with the swinging rod 5 through a central shaft 51. The swing rod 5 is approximately L-shaped, one end of the swing rod is hinged to the power tractor 1, and the swing rod 5 is driven to advance by the power tractor 1 so as to drive the obstacle crossing mechanism 3 to advance. The fork arm 4 is connected to the support pendulum 31 on the side facing away from the central shaft 51 via a travel shaft 313.

In this embodiment, referring to fig. 8 to 10, taking the height of the obstacle 6 as an example, 35mm is taken as the height of the obstacle 6, when the obstacle crossing mechanism 3 encounters the obstacle 6, the positions of the obstacle crossing mechanism 3 will change in posture, the long obstacle crossing module 33 will first touch the obstacle 6 and lift up under the action of the obstacle 6 and the traction force of the power tractor 1, the mounting plate 32 rotates around the middle rotation shaft 322, the front travelling wheel 371 will first lift up and lift off the ground, when the forklift continues to walk forward under the traction of the power tractor 1, the front travelling wheel 371 will reach the obstacle 6 and cross the obstacle 6, the forklift continues to walk forward, the obstacle 6 will contact with the short obstacle crossing module 34 and the rear travelling wheel 372 until all the obstacle crossing actions are completed. In the whole obstacle crossing process, because the obstacle crossing mechanism 3 is assisted, the maximum height difference between the lowest point of the travelling wheel and the contact surface of the obstacle 6 is 12.5mm, the radius of the front travelling wheel 371 and the radius of the rear travelling wheel 372 are 25mm, and the maximum height difference is half of the radius of the travelling wheel, so that the obstacle crossing can be successfully realized.

It can be appreciated that the obstacle crossing walking forklift is provided with the push rod 2, the supporting swing rod 31, the mounting plate 32, the long obstacle crossing module 33, the short obstacle crossing module 34 and the guide sliding block 35, when the obstacle crossing walking forklift needs to cross an obstacle or under special road conditions, the push rod 2, the supporting swing rod 31 and the long obstacle crossing module 33 can slide to corresponding positions and lift and support the fork arm 4, so that the stability of construction of the obstacle crossing walking forklift under different environments can be effectively ensured, even if special road conditions such as high road conditions of obstacles occur, the stable operation can be realized, the adaptability under severe environments is ensured, the using range of the forklift is improved, the obstacle crossing walking forklift can be automatically adjusted when crossing obstacles with different heights, and the high application range and stability are improved.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. The obstacle crossing walking forklift is characterized by comprising a power tractor (1) for driving the forklift to advance, a push rod (2) in driving connection with the power tractor (1), an obstacle crossing mechanism (3) connected with the push rod (2) and used for assisting the forklift to cross an obstacle, and a fork arm (4) fixedly connected with the obstacle crossing mechanism (3);

the obstacle surmounting mechanism (3) comprises a supporting swing rod (31), a mounting plate (32), a long obstacle surmounting module (33) and a short obstacle surmounting module (34);

the supporting swing rod (31) is connected with the push rod (2) through a rotating shaft (311), so that the supporting swing rod (31) swings up and down around the rotating shaft (311) to realize the lifting and retracting actions of the fork arm (4);

the mounting plate (32) is connected with the supporting swing rod (31) through a middle rotating shaft (322);

one end of the long obstacle crossing module (33) is connected with the mounting plate (32), and when the fork arm (4) is lifted, the long obstacle crossing module (33) is in an inclined state to generate a guide surface;

the short obstacle crossing module (34) is connected with the mounting plate (32) and is used for assisting in completing the final obstacle crossing action of the forklift.

2. Obstacle surmounting fork truck according to claim 1, characterized in that the obstacle surmounting mechanism (3) further comprises a pair of guide sliders (35), the end of the long obstacle surmounting module (33) remote from the mounting plate (32) being connected to the pair of guide sliders (35) by means of a sliding shaft (36), and the guide sliders (35) being connected to the fork arms (4) by means of fasteners;

the guide sliding block (35) is provided with a strip-shaped through hole (351) for installing the sliding shaft (36).

3. The obstacle surmounting walking forklift of claim 2, wherein said long obstacle surmounting module (33) comprises a pair of long obstacle surmounting links (331), a plurality of reinforcing beams (332), and a plurality of long obstacle surmounting wheels (333) rotatably connected to said long obstacle surmounting links (331);

the reinforcing cross beams (332) are arranged on one side of the long obstacle crossing connecting frame (331) close to the guide sliding block (35);

the long obstacle crossing wheels (333) are arranged on one side, close to the mounting plate (32), of the long obstacle crossing connecting frame (331), the long obstacle crossing wheels are distributed along the length direction of the long obstacle crossing connecting frame (331), and each two adjacent long obstacle crossing wheels (333) are arranged in a staggered mode.

4. Obstacle surmounting walking forklift according to claim 3, characterized in that one end of the long obstacle surmounting module (33) is rotatably connected with the mounting plate (32) by means of a left rotation shaft (321);

the short obstacle crossing module (34) is fixedly connected with the mounting plate (32) through the middle rotating shaft (322) and the right rotating shaft (323).

5. Obstacle surmounting walking forklift according to claim 4, characterized in that the central axes (51) of the left rotation axis (321), the middle rotation axis (322) and the right rotation axis (323) are on the same plane.

6. The obstacle surmounting walking forklift as claimed in claim 4, wherein the obstacle surmounting mechanism (3) further comprises a walking wheel assembly (37) arranged at the bottom end of the mounting plate (32), the walking wheel assembly (37) comprises a front walking wheel (371) and a rear walking wheel (372), and the front walking wheel (371) is arranged at one side close to the long obstacle surmounting module (33).

7. The obstacle surmounting walking forklift of claim 6, wherein said short obstacle surmounting module (34) comprises a pair of short obstacle surmounting links (341) and a plurality of short obstacle surmounting wheels (342) rotatably connected to said short obstacle surmounting links (341);

the short obstacle crossing wheels (342) are distributed along the length direction of the short obstacle crossing connecting frame (341), and each two adjacent short obstacle crossing wheels (342) are arranged in a staggered mode.

8. The obstacle-surmounting truck of claim 7 wherein the short obstacle-surmounting wheels (342) are provided on either side of the road wheel assembly (37); or alternatively

The short obstacle crossing wheel (342) is installed in an avoidance manner in the movable space of the travelling wheel assembly (37).

9. Obstacle surmounting walking forklift as claimed in claim 8, characterized in that the short obstacle surmounting connection frame (341) is provided with a stop (38) for limiting the supporting pendulum bar (31).

10. Obstacle surmounting walking forklift according to claim 1, characterized in that it further comprises a swinging lever (5), one end of which swinging lever (5) is hinged to the power tractor (1) and the other end is hinged to the push rod (2), and in that the fork arm (4) is connected to the swinging lever (5) via a central shaft (51);

one side of the fork arm (4) far away from the central shaft (51) is connected with the supporting swing rod (31) through a traveling shaft (313).