CN111846014A

CN111846014A - Transport vehicle

Info

Publication number: CN111846014A
Application number: CN202010902624.8A
Authority: CN
Inventors: 王通宙
Original assignee: KINCO ELECTRIC (SHENZHEN) Ltd
Current assignee: KINCO ELECTRIC (SHENZHEN) Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-10-30

Abstract

The invention relates to the field of delivery trucks, in particular to a delivery truck. The conveying vehicle comprises a supporting frame, a first wheel shaft, a second wheel shaft, a first cam, a second cam, a cam shaft, a first swing arm, a second swing arm and a swing arm shaft; the cam shaft is in rotating fit with the support frame, and the first cam and the second cam are both fixedly connected with the cam shaft; the swing arm shaft is arranged on the support frame, the first swing arm and the second swing arm are in rotating fit with the swing arm shaft, the revolution surface of the first cam is abutted against the first swing arm, and the revolution surface of the second cam is abutted against the second swing arm; the first swing arm is used for driving the first wheel shaft to lift relative to the supporting frame; the second swing arm is used for driving the second wheel shaft to lift relative to the supporting frame. The conveying vehicle provided by the invention has the advantages of simple structure, lower cost, capability of realizing a reversing function only by rotating the cam shaft, simplicity in operation and shorter time consumption, so that the efficiency of transporting goods is higher.

Description

Transport vehicle

Technical Field

The invention relates to the field of delivery trucks, in particular to a delivery truck.

Background

The conveying vehicle with the reversing function comprises a first wheel shaft and a second wheel shaft which are perpendicular to each other, wherein idler wheels are mounted at two ends of the first wheel shaft and two ends of the second wheel shaft; when the rollers on the second wheel axle touch the ground, the conveying vehicle can walk in the direction perpendicular to the second wheel axle, so that the reversing function can be realized.

However, the reversing mechanism of the existing conveying vehicle is very complex, the cost is high, the time consumption of the reversing process is long, and the efficiency of transporting goods is low.

In summary, how to overcome the above-mentioned defects of the existing transportation vehicles is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The invention aims to provide a conveying vehicle to solve the technical problems that the conveying vehicle in the prior art is complex in structure, high in cost and low in cargo conveying efficiency.

The invention provides a delivery wagon, which comprises a support frame, a first wheel axle, a second wheel axle, a first cam, a second cam, a cam shaft, a first swing arm, a second swing arm and a swing arm shaft.

The cam shaft is in rotating fit with the supporting frame, and the first cam and the second cam are both fixedly connected with the cam shaft; the swing arm shaft is installed on the support frame, the first swing arm and the second swing arm are in running fit with the swing arm shaft, the revolution surface of the first cam is abutted to the first swing arm, and the revolution surface of the second cam is abutted to the second swing arm.

The first swing arm is connected with the first wheel shaft and used for driving the first wheel shaft to lift relative to the supporting frame; the second swing arm is connected with the second wheel shaft and used for driving the second wheel shaft to lift relative to the supporting frame; when the first wheel axle is lifted, the second wheel axle maintains the current height or descends; the second axle maintains a current height or rises as the first axle descends.

Preferably, as an embodiment, a surface of the first swing arm that abuts against the first cam is a flat surface, a surface of the second swing arm that abuts against the second cam is a flat surface, and the first cam and the second cam have a phase difference.

Preferably, as an embodiment, the second wheel axle is perpendicular to the cam axle, the second wheel axle has a transmission block, the transmission block has two tenons, and the two tenons are respectively positioned at two sides of the second wheel axle along the length direction of the first wheel axle; the tenon is in one-to-one correspondence with the second swing arm, and the second swing arm is connected with the corresponding tenon and is used for driving the tenon to lift.

Preferably, as an implementation mode, a synchronizing shaft is connected between two second swing arms corresponding to two tenons on the same transmission block.

Preferably, as an implementation manner, at least two transmission blocks are arranged on a single second wheel shaft at intervals along the length direction, the swing arm shafts correspond to the transmission blocks one to one, and each swing arm shaft is in running fit with the second swing arm connected to the corresponding transmission block.

Preferably, as an implementation mode, a first connecting rod is hinged between the second swing arms corresponding to the transmission blocks on the same second wheel shaft, one of the second swing arms connected to the transmission blocks on the same second wheel shaft abuts against a rotating surface of the second cam.

Preferably, as an embodiment, the first swing arm has a first U-shaped groove, and the first wheel axle is matched with the first U-shaped groove;

and/or the second swing arm is provided with a second U-shaped groove, and the tenon is matched with the second U-shaped groove.

Preferably, as an implementation mode, a single first wheel axle is respectively connected with at least two first swing arms along the length direction.

Preferably, as an implementation mode, the number of the first wheel shafts is at least two, and each first wheel shaft is arranged at intervals along a direction perpendicular to the cam shaft.

The swing arm shafts are in one-to-one correspondence with the first wheel shafts, and the first wheel shafts are connected with the first swing arms on the corresponding swing arm shafts.

Preferably, as an implementation mode, second connecting rods are hinged between the first swing arms, and in each first swing arm hinged to each second connecting rod, one first swing arm is abutted to a rotating surface of the first cam.

The conveying vehicle provided by the invention has the beneficial effects that:

according to the conveying vehicle provided by the invention, when the camshaft is rotated, the first cam and the second cam can synchronously rotate with the camshaft, and when the first cam rotates, the revolution surface of the first cam can push the first swing arm to swing around the swing arm shaft, so that the first swing arm is utilized to drive the first wheel shaft to lift relative to the supporting frame; when the second cam rotates, the revolution surface of the second cam can push the second swing arm to swing around the swing arm shaft, so that the second swing arm is utilized to drive the second wheel shaft to lift relative to the support frame. When the cam shaft is rotated to enable the first wheel shaft to ascend relative to the supporting frame, the second wheel shaft maintains the current height or descends; when the cam shaft is rotated to lower the second wheel shaft relative to the support frame, the second wheel shaft maintains the current height or is raised, so that the first wheel shaft or the second wheel shaft can be grounded by rotating the cam shaft.

When the roller on the first wheel axle of the conveying vehicle lands, if reversing is needed, the cam axle can be rotated to enable the first wheel axle to ascend relative to the supporting frame or enable the second wheel axle to descend relative to the supporting frame until the roller on the first wheel axle is lifted off and the roller on the second wheel axle lands, so that the conveying of the conveying vehicle is convenient, the direction perpendicular to the first wheel axle can be converted into the direction perpendicular to the second wheel axle; similarly, when the roller on the second wheel axle of the transport vehicle touches the ground, if reversing is needed, the cam axle can be rotated to enable the first wheel axle to descend relative to the support frame or enable the second wheel axle to ascend relative to the support frame until the roller on the second wheel axle leaves the ground and the roller on the first wheel axle touches the ground, so that the direction perpendicular to the second wheel axle can be converted into the direction perpendicular to the first wheel axle when the transport vehicle is conveniently transported.

Therefore, the conveying vehicle provided by the invention has the advantages of simple structure, lower cost, simple operation and shorter time consumption, can realize the reversing function only by rotating the cam shaft, and has higher cargo conveying efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic partial structural view of a transportation vehicle provided in an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

Icon:

100-a first axle;

200-a second axle; 210-a transmission block; 211-tenon;

300-a first cam;

400-a second cam;

500-a camshaft;

600-a first swing arm; 610-a second link;

700-a second swing arm; 710-a synchronization shaft; 720-a first link;

800-swing arm shaft.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Referring to fig. 1 and fig. 2, in the transportation vehicle provided in this embodiment, when the camshaft 500 is rotated, the first cam 300 and the second cam 400 can rotate synchronously with the camshaft 500, and when the first cam 300 is rotated, the revolution surface of the first cam 300 can push the first swing arm 600 to swing around the swing arm shaft 800, so that the first swing arm 600 is used to drive the first wheel axle 100 to lift relative to the supporting frame; when the second cam 400 rotates, the revolution surface of the second cam 400 can push the second swing arm 700 to swing around the swing arm shaft 800, so that the second swing arm 700 is utilized to drive the second wheel axle 200 to lift relative to the support frame. When the cam shaft 500 is rotated such that the first wheel axle 100 is raised with respect to the support frame, the second wheel axle 200 maintains the current height or is lowered; when the cam shaft 500 is rotated such that the second wheel axle 200 is lowered with respect to the support frame, the second wheel axle 200 maintains the current height or is raised, and thus, by rotating the cam shaft 500, it is possible to select whether the first wheel axle 100 is grounded or the second wheel axle 200 is grounded.

When the roller on the first wheel axle 100 of the transportation vehicle touches the ground, if the direction needs to be changed, the cam axle 500 can be rotated, so that the first wheel axle 100 rises relative to the support frame or the second wheel axle 200 falls relative to the support frame until the roller on the first wheel axle 100 leaves the ground and the roller on the second wheel axle 200 touches the ground, thus, the transportation of the transportation vehicle is convenient to have the direction vertical to the first wheel axle 100 and convert into the direction vertical to the second wheel axle 200; similarly, when the roller on the second axle 200 of the transportation vehicle touches the ground, if a direction change is required, the cam axle 500 can be rotated to lower the first axle 100 relative to the support frame or raise the second axle 200 relative to the support frame until the roller on the second axle 200 lifts off the ground and the roller on the first axle 100 touches the ground, so that the transportation of the transportation vehicle can be conveniently converted into a direction perpendicular to the second axle 200 and the first axle 100.

Consequently, the delivery wagon that this embodiment provided, simple structure, the cost is lower, only need rotate camshaft 500 alright realize the switching-over function moreover, easy operation, it is consuming time shorter to, the efficiency of transportation goods is higher.

For example, when the camshaft 500 is in the initial position, the roller on the second axle 200 is grounded, and the roller on the first axle 100 is grounded; in the process that the camshaft 500 rotates from the initial position to the offset angle α from the initial position in a specific direction (the direction is defined as a forward direction), the first swing arm 600 and the second swing arm 700 both maintain the current status, and the first wheel axle 100 and the second wheel axle 200 both maintain the current height; in the process that the camshaft 500 rotates from the deflection angle α to the deflection angle β from the relative initial position in the forward direction, the first swing arm 600 swings to drive the first wheel axle 100 to descend, and meanwhile, the second swing arm 700 maintains the current state, so that the second wheel axle 200 maintains the current height; when the cam shaft 500 rotates to a position deviating from the initial position by an angle β, the roller on the first wheel shaft 100 is grounded, and at this time, the roller on the second wheel shaft 200 is also in a grounded state; in the process that the camshaft 500 rotates from the offset angle β to the offset angle γ from the relative initial position in the forward direction, the first swing arm 600 and the second swing arm 700 both maintain the current status, and the first wheel axle 100 and the second wheel axle 200 both maintain the current height; when the camshaft 500 rotates in the positive direction from the offset angle γ with respect to the initial position, the first swing arm 600 maintains the current state, and the second swing arm 700 swings to drive the second axle 200 to ascend; when the cam shaft 500 rotates to a position deviated from the initial position, the roller of the second wheel shaft 200 is lifted off, and at this time, the roller of the first wheel shaft 100 maintains a grounded state, so that the direction change of the conveyor car is achieved.

Specifically, a surface of the first swing arm 600 abutting against the first cam 300 is set to be a plane, and a surface of the second swing arm 700 abutting against the second cam 400 is set to be a plane, and on the basis, the first cam 300 and the second cam 400 are set to have a certain phase difference (a specific difference value may be set as required), so that when the camshaft 500 rotates in a certain interval along a specific direction, the purpose that the first wheel axle 100 ascends and the second wheel axle 200 maintains the current height or descends can be achieved; when the camshaft 500 rotates in a specific direction in another interval, the first hub 100 may be lowered and the second hub 200 may be maintained at the current height or raised.

Arranging the second wheel axle 200 to be perpendicular to the cam shaft 500, arranging a driving block 210 on the second wheel axle 200, wherein the driving block 210 has two tenons 211, and the two tenons 211 are respectively arranged at two sides of the second wheel axle 200 along the length direction of the first wheel axle 100; the tenons 211 on the transmission block 210 and the second swing arms 700 are arranged in a one-to-one correspondence manner, and the second swing arms 700 are connected with the corresponding tenons 211, so that the second swing arms 700 can drive the tenons 211 to ascend and descend, and further, the second wheel shaft 200 can ascend and descend synchronously along with the transmission block 210.

It should be noted that, by connecting the second swing arm 700 and the tenons 211 disposed at both sides of the second wheel axle 200 along the length direction of the first wheel axle 100, the stress on the second wheel axle 200 can be more balanced, which is convenient for improving the precision of the lifting height of the second wheel axle 200, so that the first wheel axle 100 and the second wheel axle 200 can be grounded or lifted off when the cam axle 500 rotates by a predetermined angle, thereby improving the reliability of the reversing of the transportation vehicle.

Preferably, the synchronizing shaft 710 can be connected between two second swing arms 700 corresponding to two tenons 211 on the same transmission block 210, so that the lifting synchronism of the two tenons 211 can be improved, and higher smoothness can be ensured.

At least two transmission blocks 210 can be arranged on a single second wheel shaft 200 at intervals along the length direction, the swing shafts and the transmission blocks 210 are arranged in a one-to-one correspondence mode, and each swing arm shaft 800 is in running fit with a second swing arm 700 connected with the corresponding transmission block 210 respectively, so that the second wheel shaft 200 is provided with at least two stress points arranged at intervals along the length direction, other structures do not need to be additionally arranged, and all parts of the second wheel shaft 200 can be lifted consistently.

Specifically, one transmission block 210 may be disposed at each end of the single second axle 200, so as to better maintain the force stability of the second axle 200.

Preferably, the first connecting rod 720 is hinged between the second swing arms 700 corresponding to the transmission blocks 210 on the same second wheel shaft 200, and only one second swing arm 700 is required to be abutted to the revolution surface of the second cam 400 in each second swing arm 700 connected to the transmission block 210 on the same second wheel shaft 200, when the second cam 400 rotates, the second swing arm 700 abutted to the second swing arm is pushed to swing, and the swinging second swing arm 700 drives other second swing arms 700 to swing through the first connecting rod 720, so that the synchronous swinging of all the second swing arms 700 can be realized, the structure is simplified, and the cost is reduced.

Specifically, there are at least two second wheel shafts 200, and each second wheel shaft 200 is arranged at intervals along the length direction of the cam shaft 500, so that when the rollers on the second wheel shafts 200 land, the transport vehicle is supported by at least four rollers, and thus, stable running of the transport vehicle can be achieved by using four rollers alone.

Particularly, a first U-shaped groove may be formed in the first swing arm 600, so that the first axle 100 can be inserted into the first U-shaped groove, and the first swing arm 600 and the first axle 100 are connected and matched, which is not only convenient to detach, but also stable in connection.

Similarly, a second U-shaped groove can be formed in the second swing arm 700, so that the tenon 211 of the driving block 210 can be clamped into the second U-shaped groove, and the tenon 211 and the second U-shaped groove are connected and matched, thereby facilitating disassembly and ensuring stable connection.

The single first wheel axle 100 is respectively connected with the at least two first swing arms 600 along the length direction, so that the first wheel axle 100 has at least two stress points arranged at intervals along the length direction, and the lifting of each part of the second wheel axle 200 can be consistent without additionally arranging other structures.

Specifically, two ends of a single first wheel axle 100 may be respectively connected to one first swing arm 600, so as to better maintain the force stability of the first wheel axle 100.

The number of the first wheel shafts 100 is at least two, and the first wheel shafts 100 are arranged at intervals in a direction perpendicular to the cam shaft 500, on the basis, the swing arm shafts 800 are arranged in one-to-one correspondence with the first wheel shafts 100, and the first wheel shafts 100 are connected with the first swing arms 600 on the corresponding swing arm shafts 800, that is, when the rollers on the first wheel shafts 100 land, the transport vehicle is supported by at least four rollers, so that the transport vehicle can stably run by independently using the four rollers.

Preferably, can articulate second connecting rod 610 between first swing arm 600, in each first swing arm 600 of every second connecting rod 610 articulated, only need a first swing arm 600 and first cam 300's surface of revolution butt can, when first cam 300 rotates, promote the first swing arm 600 swing rather than the butt, wobbling first swing arm 600 is to driving other first swing arms 600 swings through second connecting rod 610, can realize the synchronous swing of all first swing arms 600, the structure is simplified, the cost is reduced.

When both ends of a single first wheel axle 100 are respectively connected with one first swing arm 600, the first swing arms 600 at the same end can be connected by one second connecting rod 610 perpendicular to the cam axle 500, that is, the second connecting rods 610 are set to be two.

In summary, the present invention discloses a delivery wagon, which overcomes many technical defects of the conventional delivery wagon. The delivery wagon that this embodiment provided, simple structure, the cost is lower, only need rotate camshaft 500 alright realize the switching-over function moreover, easy operation, it is consuming time shorter to, the efficiency of transportation goods is higher.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transport vehicle is characterized by comprising a support frame, a first wheel shaft (100), a second wheel shaft (200), a first cam (300), a second cam (400), a cam shaft (500), a first swing arm (600), a second swing arm (700) and a swing arm shaft (800);

the camshaft (500) is in rotating fit with the supporting frame, and the first cam (300) and the second cam (400) are both fixedly connected with the camshaft (500); the swing arm shaft (800) is mounted on the support frame, the first swing arm (600) and the second swing arm (700) are in running fit with the swing arm shaft (800), the revolution surface of the first cam (300) is abutted against the first swing arm (600), and the revolution surface of the second cam (400) is abutted against the second swing arm (700);

the first swing arm (600) is connected with the first wheel shaft (100) and used for driving the first wheel shaft (100) to lift relative to the supporting frame; the second swing arm (700) is connected with the second wheel shaft (200) and used for driving the second wheel shaft (200) to lift relative to the supporting frame; the second axle (200) maintains a current height or descends while the first axle (100) ascends; the second axle (200) maintains a current height or rises as the first axle (100) descends.

2. The cart according to claim 1, wherein a surface of the first swing arm (600) abutting the first cam (300) is a flat surface, a surface of the second swing arm (700) abutting the second cam (400) is a flat surface, and the first cam (300) and the second cam (400) have a phase difference.

3. The conveyor car according to claim 1, characterized in that the second wheel axle (200) is perpendicular to the cam axle (500), the second wheel axle (200) has a transmission block (210), the transmission block (210) has two tenons (211), the two tenons (211) are respectively located on both sides of the second wheel axle (200) in the length direction of the first wheel axle (100); the tenon (211) corresponds to the second swing arm (700) one by one, and the second swing arm (700) is connected with the corresponding tenon (211) and used for driving the tenon (211) to lift.

4. Delivery wagon according to claim 3, characterized in that a synchronizing shaft (710) is connected between the two second swing arms (700) corresponding to the two tenons (211) on the same transmission block (210).

5. The transport cart of claim 3, wherein at least two transmission blocks (210) are arranged on a single second wheel axle (200) at intervals along the length direction, the swing arm shafts (800) correspond to the transmission blocks (210) one by one, and each swing arm shaft (800) is in running fit with the second swing arm (700) connected to the corresponding transmission block (210).

6. Transport carriage as claimed in claim 5, characterized in that between the second swing arms (700) corresponding to each of the transmission blocks (210) on the same second wheel axle (200) there is a first connecting rod (720), in each of the second swing arms (700) of the transmission blocks (210) connected to the same second wheel axle (200) there is one of the second swing arms (700) in abutment with the surface of revolution of the second cam (400).

7. Delivery wagon according to claim 3, wherein the first swing arm (600) has a first U-shaped groove, with which the first wheel axle (100) cooperates;

and/or the second swing arm (700) is provided with a second U-shaped groove, and the tenon (211) is matched with the second U-shaped groove.

8. Transport vehicle according to any of claims 1-7, characterized in that a single first wheel axle (100) is connected lengthwise to at least two first swing arms (600), respectively.

9. Transport vehicle according to any of claims 1-7, characterized in that the number of the first axles (100) is at least two and that each of the first axles (100) is arranged at intervals in a direction perpendicular to the camshaft (500);

the swing arm shafts (800) correspond to the first wheel shafts (100) one by one, and the first wheel shafts (100) are connected with the first swing arms (600) on the corresponding swing arm shafts (800).

10. A vehicle according to claim 9, characterized in that second connecting rods (610) are articulated between said first swing arms (600), and in each of said first swing arms (600) to which each of said second connecting rods (610) is articulated, there is one of said first swing arms (600) in abutment with the surface of revolution of said first cam (300).