Transport vehicle

Abstract

The present invention relates to the field of transport vehicles, and in particular, to a transport vehicle. The transport vehicle comprises a support frame, a first wheel axle, a second wheel axle, a first cam, a second cam, a camshaft, a first swing arm, a second swing arm and a swing arm shaft; the camshaft is rotatably matched with the support frame, and the first cam and the second cam are both fixedly connected to the camshaft; the swing arm shaft is installed on the support frame, the first swing arm and the second swing arm are both rotatably matched with the swing arm shaft, the rotating surface of the first cam abuts against the first swing arm, and the rotating surface of the second cam abuts against the second swing arm; the first swing arm is used to drive the first wheel axle to rise and fall relative to the support frame; the second swing arm is used to drive the second wheel axle to rise and fall relative to the support frame. The transport vehicle provided by the present invention has a simple structure and low cost, and the reversing function can be realized by only rotating the camshaft, which is simple to operate and takes less time, so that the efficiency of transporting goods is higher.

Description

Technical Field

[0001] The present invention relates to the field of transport vehicles, and in particular to a transport vehicle. Background Art

[0002] The transport vehicle with a reversing function includes a first wheel axle and a second wheel axle that are perpendicular to each other, rollers are installed at both ends of the first wheel axle and the second wheel axle, and the transport vehicle also includes a deformation mechanism. Controlling the reversing mechanism can realize the lifting and lowering of the first wheel axle and the second wheel axle so that the rollers on the first wheel axle or the rollers on the second wheel axle touch the ground. When the rollers on the first wheel axle touch the ground, the transport vehicle can move in a direction perpendicular to the first wheel axle; when the rollers on the second wheel axle touch the ground, the transport vehicle can move in a direction perpendicular to the second wheel axle, thereby realizing the reversing function.

[0003] However, the reversing mechanism of the existing transport vehicle is very complex, the cost is high, and the reversing process is time-consuming, resulting in low efficiency in transporting goods.

[0004] In summary, how to overcome the above-mentioned defects of the existing transport vehicles is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a transport vehicle to alleviate the technical problems of the transport vehicles in the prior art, such as complex structure, high cost and low efficiency in transporting goods.

[0006] The transport vehicle provided by the present invention comprises a support frame, a first wheel axle, a second wheel axle, a first cam, a second cam, a camshaft, a first swing arm, a second swing arm and a swing arm shaft.

[0007] Among them, the camshaft is rotatably matched with the support frame, and the first cam and the second cam are both fixedly connected to the camshaft; the swing arm shaft is installed on the support frame, the first swing arm and the second swing arm are both rotatably matched with the swing arm shaft, the rotating surface of the first cam abuts against the first swing arm, and the rotating surface of the second cam abuts against the second swing arm.

[0008] The first swing arm is connected to the first wheel axle, and is used for driving the first wheel axle to rise and fall relative to the support frame; the second swing arm is connected to the second wheel axle, and is used for driving the second wheel axle to rise and fall relative to the support frame; when the first wheel axle rises, the second wheel axle maintains the current height or descends; when the first wheel axle descends, the second wheel axle maintains the current height or rises.

[0009] Preferably, as an implementable embodiment, the surface of the first swing arm abutting against the first cam is a plane, the surface of the second swing arm abutting against the second cam is a plane, and there is a phase difference between the first cam and the second cam.

[0010] Preferably, as an implementation method, the second axle is perpendicular to the camshaft, the second axle has a transmission block, the transmission block has two tenons, the two tenons are respectively located on both sides of the second axle along the length direction of the first axle; the tenons correspond one-to-one to the second swing arms, and the second swing arms are connected to the corresponding tenons to drive the tenons to rise and fall.

[0011] Preferably, as an implementable embodiment, a synchronization shaft is connected between the two second swing arms corresponding to the two tenons on the same transmission block.

[0012] Preferably, as an implementable embodiment, a single second axle is provided with at least two transmission blocks spaced apart along the length direction, the swing arm shafts correspond one-to-one to the transmission blocks, and each swing arm shaft is rotationally cooperated with the second swing arm connected to the corresponding transmission block.

[0013] Preferably, as an implementation mode, a first connecting rod is hinged between the second swing arms corresponding to each of the transmission blocks on the same second axle, and among each of the second swing arms of the transmission blocks connected to the same second axle, there is a second swing arm that abuts against the rotating surface of the second cam.

[0014] Preferably, as an implementable embodiment, the first swing arm has a first U-shaped groove, and the first wheel axle cooperates with the first U-shaped groove;

[0015] And / or, the second swing arm has a second U-shaped groove, and the tenon cooperates with the second U-shaped groove.

[0016] Preferably, as an implementable embodiment, a single first wheel axle is respectively connected to at least two first swing arms along the length direction.

[0017] Preferably, as an implementation method, there are at least two first axles, and the first axles are arranged at intervals along a direction perpendicular to the camshaft.

[0018] The swing arm shaft corresponds to the first wheel axle one by one, and the first wheel axle is connected to the first swing arm on the corresponding swing arm shaft.

[0019] Preferably, as an implementable embodiment, a second connecting rod is hinged between the first swing arms, and among each of the first swing arms hinged to each of the second connecting rods, there is one first swing arm that abuts against the rotating surface of the first cam.

[0020] The beneficial effects of the transport vehicle provided by the present invention are:

[0021] The transport vehicle provided by the present invention can rotate the first cam and the second cam synchronously with the camshaft when the camshaft is rotated. When the first cam rotates, the rotating surface of the first cam can push the first swing arm to swing around the swing arm shaft, so as to use the first swing arm to drive the first wheel axle to rise and fall relative to the support frame; when the second cam rotates, the rotating surface of the second cam can push the second swing arm to swing around the swing arm shaft, so as to use the second swing arm to drive the second wheel axle to rise and fall relative to the support frame. When the camshaft is rotated to make the first wheel axle rise relative to the support frame, the second wheel axle maintains the current height or descends; when the camshaft is rotated to make the second wheel axle descend relative to the support frame, the second wheel axle maintains the current height or rises, so that by rotating the camshaft, it can be selected whether the first wheel axle or the second wheel axle touches the ground.

[0022] When the roller on the first axle of the conveyor vehicle touches the ground, if changing direction is required, the camshaft can be rotated to raise the first axle relative to the support frame or lower the second axle relative to the support frame until the roller on the first axle is off the ground and the roller on the second axle is on the ground. In this way, the conveying direction of the conveyor vehicle will be perpendicular to the first axle and converted to a direction perpendicular to the second axle. Similarly, when the roller on the second axle of the conveyor vehicle touches the ground, if changing direction is required, the camshaft can be rotated to lower the first axle relative to the support frame or raise the second axle relative to the support frame until the roller on the second axle is off the ground and the roller on the first axle is on the ground. In this way, the conveying direction of the conveyor vehicle will be perpendicular to the second axle and converted to a direction perpendicular to the first axle.

[0023] Therefore, the transport vehicle provided by the present invention has a simple structure and low cost, and the reversing function can be realized by only rotating the camshaft, which is simple to operate and takes a short time, thereby achieving high efficiency in transporting goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of a portion of the structure of a transport vehicle provided by an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of part A.

[0027] icon:

[0028] 100 – first axle;

[0029] 200 - second wheel axle; 210 - transmission block; 211 - tenon;

[0030] 300 - first cam;

[0031] 400 - second cam;

[0032] 500 – camshaft;

[0033] 600 - first swing arm; 610 - second connecting rod;

[0034] 700 - second swing arm; 710 - synchronization shaft; 720 - first connecting rod;

[0035] 800 - swing arm shaft. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0040] See also Figure 1 and Figure 2In the transport vehicle provided by the present embodiment, when the camshaft 500 is rotated, the first cam 300 and the second cam 400 can rotate synchronously with the camshaft 500. When the first cam 300 is rotated, the rotating surface of the first cam 300 can push the first swing arm 600 to swing around the swing arm shaft 800, so as to use the first swing arm 600 to drive the first wheel shaft 100 to rise and fall relative to the support frame; when the second cam 400 is rotated, the rotating surface of the second cam 400 can push the second swing arm 700 to swing around the swing arm shaft 800, so as to use the second swing arm 700 to drive the second wheel shaft 200 to rise and fall relative to the support frame. When the camshaft 500 is rotated to make the first wheel shaft 100 rise relative to the support frame, the second wheel shaft 200 maintains the current height or descends; when the camshaft 500 is rotated to make the second wheel shaft 200 descend relative to the support frame, the second wheel shaft 200 maintains the current height or rises, so that by rotating the camshaft 500, it can be selected whether the first wheel shaft 100 or the second wheel shaft 200 is on the ground.

[0041] When the rollers on the first axle 100 of the conveyor vehicle touch the ground, if reversing is required, the camshaft 500 can be rotated to raise the first axle 100 relative to the support frame or lower the second axle 200 relative to the support frame until the rollers on the first axle 100 are off the ground and the rollers on the second axle 200 touch the ground. In this way, the conveying direction of the conveyor vehicle can be converted from a direction perpendicular to the first axle 100 to a direction perpendicular to the second axle 200; similarly, when the rollers on the second axle 200 of the conveyor vehicle touch the ground, if reversing is required, the camshaft 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 rollers on the second axle 200 are off the ground and the rollers on the first axle 100 touch the ground. In this way, the conveying direction of the conveyor vehicle can be converted from a direction perpendicular to the second axle 200 to a direction perpendicular to the first axle 100.

[0042] Therefore, the transport vehicle provided in this embodiment has a simple structure and low cost, and the reversing function can be achieved by only rotating the camshaft 500. The operation is simple and time-saving, thereby achieving high efficiency in transporting goods.

[0043] For example, when the camshaft 500 is in the initial position, the roller on the second axle 200 is on the ground, and the roller on the first axle 100 is off the ground; during the process of the camshaft 500 rotating from the initial position to an angle α relative to the initial position along a specific direction (this direction is defined as the positive direction), the first swing arm 600 and the second swing arm 700 both maintain their current status, and the first axle 100 and the second axle 200 both maintain their current heights; during the process of the camshaft 500 rotating from the angle α to the angle β relative to the initial position along the positive direction, the first swing arm 600 swings, driving the first axle 100 to descend, and at the same time, the second swing arm 700 maintains its status, so that the second axle 200 maintains its current height; when the camshaft 500 rotates to a position with an angle β relative to the initial position, the first swing arm 600 and the second swing arm 700 both maintain their current status, and the first axle 100 and the second axle 200 both maintain their current heights. The rollers on the axle 100 are on the ground, and at this time, the rollers on the second axle 200 are also on the ground; when the camshaft 500 rotates from an angle β to an angle γ relative to the initial position in the positive direction, the first swing arm 600 and the second swing arm 700 both maintain their status quo, and the first axle 100 and the second axle 200 both maintain their current heights; when the camshaft 500 rotates from an angle γ relative to the initial position to δ in the positive direction, the first swing arm 600 maintains its status quo, and the second swing arm 700 swings, driving the second axle 200 to rise; when the camshaft 500 rotates to a position with an angle δ relative to the initial position, the rollers on the second axle 200 leave the ground, and at this time, the rollers on the first axle 100 maintain their status quo, thereby realizing the reversal of the transport vehicle.

[0044] Specifically, the surface of the first swing arm 600 that abuts against the first cam 300 is set to a plane, and the surface of the second swing arm 700 that abuts against the second cam 400 is set to a plane. On this basis, the first cam 300 and the second cam 400 are set to have a certain phase difference (the specific difference can be set as needed). Thus, when the camshaft 500 rotates in a specific direction in a certain interval, the first axle 100 can be raised and the second axle 200 can maintain the current height or be lowered; when the camshaft 500 rotates in a specific direction in another interval, the first axle 100 can be lowered and the second axle 200 can maintain the current height or be raised.

[0045] The second axle 200 is set to be perpendicular to the camshaft 500, and a transmission block 210 is set on the second axle 200. The transmission block 210 has two tenons 211, and the two tenons 211 are respectively located on both sides of the second axle 200 along the length direction of the first axle 100; the tenons 211 on the transmission block 210 are set in a one-to-one correspondence with the second swing arm 700, and the second swing arm 700 is connected to the corresponding tenons 211, so that the second swing arm 700 can drive the tenons 211 to rise and fall, and then, the second axle 200 follows the transmission block 210 to rise and fall synchronously.

[0046] It should be noted that connecting the second swing arm 700 with the tenons 211 provided on both sides of the second axle 200 along the length direction of the first axle 100 can make the force on the second axle 200 more balanced, facilitate improving the accuracy of the lifting height of the second axle 200, and enable the first axle 100 and the second axle 200 to touch the ground or leave the ground when the camshaft 500 rotates a predetermined angle, thereby improving the reliability of the reversing of the transport vehicle.

[0047] Preferably, the synchronization shaft 710 can be connected between the two second swing arms 700 corresponding to the two tenons 211 on the same transmission block 210, so as to improve the synchronization of the lifting and lowering of the two tenons 211 and ensure a higher degree of stability.

[0048] At least two transmission blocks 210 can be arranged at intervals along the length direction on a single second axle 200, the swing shafts and the transmission blocks 210 are arranged in one-to-one correspondence, and each swing arm shaft 800 is rotatably matched with the second swing arm 700 connected to the corresponding transmission block 210. Thus, the second axle 200 has at least two force points arranged at intervals along the length direction, and the various parts of the second axle 200 can be raised and lowered in unison without adding other structures.

[0049] Specifically, a transmission block 210 may be provided at both ends of a single second axle 200 , so as to better maintain the force stability of the second axle 200 .

[0050] Preferably, the first connecting rod 720 can be hinged between the second swing arms 700 corresponding to each transmission block 210 on the same second axle 200. Among the second swing arms 700 connected to the transmission block 210 on the same second axle 200, only one second swing arm 700 is required to abut against the rotating surface of the second cam 400. When the second cam 400 rotates, it pushes the second swing arm 700 abutting against it to swing. The swinging second swing arm 700 pair drives other second swing arms 700 to swing through the first connecting rod 720, so that all the second swing arms 700 can realize synchronous swinging, simplifying the structure and reducing the cost.

[0051] Specifically, there are at least two second axles 200, and the second axles 200 are arranged at intervals along the length direction of the camshaft 500. In this way, when the rollers on the second axles 200 touch the ground, the transport vehicle will be lifted up by at least four rollers. In this way, the transport vehicle can be driven stably using only four rollers.

[0052] In particular, a first U-shaped groove may be provided on the first swing arm 600 so that the first axle 100 can be inserted into the first U-shaped groove, thereby achieving connection and cooperation between the first swing arm 600 and the first axle 100, which is not only convenient for disassembly but also stable for connection.

[0053] Similarly, a second U-shaped groove can be opened on the second swing arm 700 so that the tenon 211 of the transmission block 210 can be inserted into the second U-shaped groove to achieve the connection and cooperation between the tenon 211 and the second U-shaped groove, which is not only convenient for disassembly but also stable for connection.

[0054] The single first axle 100 is connected to at least two first swing arms 600 along the length direction, so that the first axle 100 has at least two force points spaced apart along the length direction, and all parts of the second axle 200 can be raised and lowered in unison without adding other structures.

[0055] Specifically, both ends of a single first axle 100 may be connected to a first swing arm 600 respectively, so as to better maintain the force stability of the first axle 100 .

[0056] There are at least two first axles 100, and the first axles 100 are arranged at intervals in a direction perpendicular to the camshaft 500. On this basis, the swing arm shafts 800 are arranged one by one with the first axles 100, and the first axles 100 are connected to the first swing arms 600 on the corresponding swing arm shafts 800. That is to say, when the rollers on the first axle 100 touch the ground, the transport vehicle will be lifted up by at least four rollers. In this way, the transport vehicle can be driven stably by using four rollers alone.

[0057] Preferably, the second connecting rod 610 can be hinged between the first swing arms 600. Among the first swing arms 600 hinged by each second connecting rod 610, only one first swing arm 600 is required to abut against the rotating surface of the first cam 300. When the first cam 300 rotates, it pushes the first swing arm 600 abutting against it to swing. The swinging first swing arm 600 pair drives other first swing arms 600 to swing through the second connecting rod 610, thereby realizing the synchronous swinging of all the first swing arms 600, simplifying the structure and reducing the cost.

[0058] When both ends of a single first wheel axle 100 are respectively connected to a first swing arm 600 , each first swing arm 600 at the same end can be connected by a second connecting rod 610 perpendicular to the camshaft 500 , that is, two second connecting rods 610 are provided.

[0059] In summary, the present invention discloses a transport vehicle that overcomes many technical defects of traditional transport vehicles. The transport vehicle provided in this embodiment has a simple structure and low cost, and can realize the reversing function by only rotating the camshaft 500, which is simple to operate and takes a short time, thereby achieving high efficiency in transporting goods.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transport vehicle, It is characterized in that It comprises 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 rotatably matched with the support frame, and the first cam (300) and the second cam (400) are both fixedly connected to the camshaft (500); the swing arm shaft (800) is installed on the support frame, the first swing arm (600) and the second swing arm (700) are both rotatably matched with the swing arm shaft (800), the rotating surface of the first cam (300) abuts against the first swing arm (600), and the rotating surface of the second cam (400) abuts against the second swing arm (700); The first swing arm (600) is connected to the first wheel axle (100) and is used to drive the first wheel axle (100) to rise and fall relative to the support frame; the second swing arm (700) is connected to the second wheel axle (200) and is used to drive the second wheel axle (200) to rise and fall relative to the support frame; when the first wheel axle (100) rises, the second wheel axle (200) maintains a current height or descends; when the first wheel axle (100) descends, the second wheel axle (200) maintains a current height or rises; The single first wheel axle (100) is respectively connected to at least two of the first swing arms (600) along the length direction; There are at least two first wheel axles (100), and the first wheel axles (100) are arranged at intervals in a direction perpendicular to the camshaft (500); The swing arm shaft (800) corresponds to the first wheel shaft (100) in a one-to-one manner, and the first wheel shaft (100) is connected to the first swing arm (600) on the corresponding swing arm shaft (800).

2. The transport vehicle according to claim 1, It is characterized in that The surface of the first swing arm (600) that abuts against the first cam (300) is a plane, and the surface of the second swing arm (700) that abuts against the second cam (400) is a plane. There is a phase difference between the first cam (300) and the second cam (400).

3. The transport vehicle according to claim 1, It is characterized in that The second wheel axle (200) is perpendicular to the camshaft (500), the second wheel axle (200) has a transmission block (210), the transmission block (210) has two tenons (211), and the two tenons (211) are respectively located on both sides of the second wheel axle (200) along the length direction of the first wheel axle (100); the tenons (211) correspond to the second swing arms (700) one by one, and the second swing arms (700) are connected to the corresponding tenons (211) to drive the tenons (211) to rise and fall.

4. The transport vehicle according to claim 3, It is characterized in that A synchronization 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 vehicle according to claim 3, It is characterized in that A single second wheel shaft (200) is provided with at least two transmission blocks (210) spaced apart 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 rotationally matched with the second swing arm (700) connected to the corresponding transmission block (210).

6. The transport vehicle according to claim 5, It is characterized in that A first connecting rod (720) is hinged between the second swing arms (700) corresponding to each of the transmission blocks (210) on the same second wheel axle (200), and among the second swing arms (700) connected to the transmission blocks (210) on the same second wheel axle (200), there is a second swing arm (700) that abuts against the rotating surface of the second cam (400).

7. The transport vehicle according to claim 3, It is characterized in that The first swing arm (600) has a first U-shaped groove, and the first wheel axle (100) cooperates with the first U-shaped groove; And / or, the second swing arm (700) has a second U-shaped groove, and the tenon (211) cooperates with the second U-shaped groove.

8. The transport vehicle according to claim 1, It is characterized in that A second connecting rod (610) is hinged between the first swing arms (600), and in each of the first swing arms (600) hinged to each of the second connecting rods (610), there is a first swing arm (600) that abuts against the rotating surface of the first cam (300).

Images