Chain tensioners and piggyback transporters

Abstract

The present invention provides a chain tensioning device and a piggyback transport vehicle. The chain tensioning device comprises: a fixed seat; a movable component, the movable component is movably arranged relative to the fixed seat, and the chain is wound around the movable component; and an adjustment component, the adjustment component is connected to both the fixed seat and the movable component, and can adjust the distance between the movable component and the fixed seat to tension the chain. The present invention solves the problem of insufficient tensioning of the chain of the piggyback transport vehicle in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of piggyback transport, and in particular to a chain tensioning device and a piggyback transport vehicle. Background Art

[0002] Railway piggyback transport can drive the loading chassis to rotate out by rotating the chain installed on the end chassis, and then contact the ground after lifting and lowering through the transmission mechanism, so as to realize the loading and unloading of the piggyback transport vehicle by road trucks or semi-trailers. However, after a period of use, the chain is prone to loosening due to insufficient tension, and cannot stably drive the loading chassis to rotate, affecting the normal operation of the loading chassis and other devices, and even damaging some devices. Summary of the invention

[0003] The main purpose of the present invention is to provide a chain tensioning device and a piggyback transport vehicle to solve the problem of insufficient chain tensioning of the piggyback transport vehicle in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a chain tensioning device, comprising: a fixed seat; a movable component, the movable component is movably arranged relative to the fixed seat, and the chain is wound around the movable component; an adjusting component, the adjusting component is connected to both the fixed seat and the movable component, and can adjust the distance between the movable component and the fixed seat to tension the chain.

[0005] Furthermore, the movable component includes: a slide, the opening trajectory of the slide is parallel to the movement trajectory of the movable component; a ferrule, the ferrule is slidably set on the slide and can move along the opening trajectory of the slide; a base plate, the base plate is connected to the ferrule and to the adjustment component, and the adjustment component drives the ferrule to slide through the base plate.

[0006] Furthermore, there are multiple ferrules arranged in pairs, and the two ferrules arranged in pairs are respectively located on two opposite sides of the bottom plate, and a roller shaft for winding the chain is arranged between the two ferrules in the pair.

[0007] Furthermore, the connecting line of the two ferrules arranged in pairs is perpendicular to the motion trajectory of the movable component.

[0008] Furthermore, the ferrule has a protrusion, which extends into the slideway and moves along the opening track of the slideway.

[0009] Furthermore, there are multiple slideways that are opened in parallel with each other, each ferrule is arranged on at least two slideways at the same time, each ferrule has at least two protrusions, and each slideway contains at least one protrusion.

[0010] Furthermore, the movable component also includes an anti-slip plate, which is connected to the bottom plate, and the adjustment component passes through the anti-slip plate and is connected to the bottom plate.

[0011] Furthermore, the movable component also includes a reinforcing plate, which is connected to the bottom plate, and the reinforcing plate and the bottom plate are perpendicular to each other.

[0012] Furthermore, the adjustment component includes: an adjustment bolt, which is inserted between the fixed seat and the movable component, and is adjustably connected to the fixed seat and abuts against the movable component; an adjustment nut, which is connected to the fixed seat, and the adjustment bolt is adjustably connected to the adjustment nut to change the distance between the movable component and the fixed seat; and a locking nut, which is adjustably connected to the adjustment bolt and can abut against the fixed seat to lock the adjustment bolt.

[0013] Furthermore, along the axial direction of the adjusting bolt, the adjusting nut and the locking nut are respectively located on two sides of the fixing seat.

[0014] Furthermore, there are multiple adjustment components, and each adjustment component can drive the movable component to move.

[0015] According to another aspect of the present invention, a piggyback transport vehicle is provided, comprising the above-mentioned chain tensioning device.

[0016] By applying the technical solution of the present invention, a movable component is provided, and the chain is wound around the movable component. When the tension of the chain needs to be adjusted, the distance between the movable component and the fixed seat is changed by adjusting the component, so that the movable component drives the chain to move, so that the chain is tensioned. The above-mentioned setting method can effectively tension the chain, and has a simple and reliable structure, high operating efficiency, and good promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A front view of a chain tensioner of the present invention is shown;

[0019] Figure 2 Shows Figure 1 A top view of the chain tensioner in FIG.

[0020] Figure 3 Shows Figure 1 A side view of the chain tensioner in FIG. 1 ; and

[0021] Figure 4 Shows Figure 1 A schematic diagram of the structure of a chain tensioning device having a chain wound therearound.

[0022] The above drawings include the following reference numerals:

[0023] 10. Fixed seat; 20. Movable assembly; 21. Slide; 22. Clamping sleeve; 221. Protrusion; 23. Bottom plate; 24. Anti-slip plate; 25. Reinforcement plate; 30. Adjustment assembly; 31. Adjustment bolt; 32. Adjustment nut; 33. Locking nut. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0027] In order to solve the problem of insufficient chain tensioning of a piggyback transport vehicle in the prior art, the present invention provides a chain tensioning device and a piggyback transport vehicle.

[0028] like Figures 1 to 4 A chain tensioning device shown includes a fixed seat 10, a movable component 20 and an adjustment component 30. The movable component 20 can be movably arranged relative to the fixed seat 10, and the chain is wound around the movable component 20; the adjustment component 30 is connected to both the fixed seat 10 and the movable component 20, and can adjust the distance between the movable component 20 and the fixed seat 10 to tension the chain.

[0029] This embodiment is provided with a movable component 20, and the chain is wound around the movable component 20. When the tension of the chain needs to be adjusted, the distance between the movable component 20 and the fixed seat 10 is changed by adjusting the component 30, so that the movable component 20 drives the chain to move, so that the chain is tensioned. The above arrangement can effectively tension the chain, and has a simple and reliable structure, high operating efficiency, and good promotion value.

[0030] This embodiment is described by taking the chain tensioning device used to tension the chain on the end chassis of the piggyback transport vehicle as an example, and accordingly, the fixing seat 10 is fixed on the end chassis of the piggyback transport vehicle, and the movable assembly 20 is movably arranged on the end chassis. Of course, the chain tensioning device can also be used for tensioning chains of other similar structures.

[0031] like Figure 1As shown, the movable component 20 includes a slide 21, a sleeve 22 and a base plate 23. The slide 21 is opened on the protrusion of the end frame. The opening trajectory of the slide 21 is parallel to the movement trajectory of the movable component 20 and is parallel to the plane where the chain is located. When the chain needs to be tensioned, the movable component 20 is adjusted to move toward the outside of the chain to tension the chain; the sleeve 22 is slidably set on the slide 21 and can move along the opening trajectory of the slide 21. A roller can be installed on the sleeve 22, and a sprocket is set on the roller. The chain and the sprocket are engaged with each other, so that the movement of the movable component 20 can drive the chain to move synchronously; the base plate 23 is connected to the sleeve 22 and to the adjustment component 30. The adjustment component 30 drives the sleeve 22 to slide through the base plate 23.

[0032] Optionally, there are multiple ferrules 22 and they are arranged in pairs. The two ferrules 22 arranged in pairs are respectively located on opposite sides of the bottom plate 23, and a roller for winding the chain is arranged between the two ferrules 22 in pairs. In this embodiment, there are two ferrules 22, which are spaced apart from each other and symmetrically arranged on both sides of the bottom plate 23. A mounting hole for installing the roller is opened on the ferrule 22. The roller is arranged between the two ferrules 22 and installed on the mounting hole. The connecting line of the two ferrules 22, i.e., the axis of the roller, is perpendicular to the motion trajectory of the movable component 20. The motion trajectory of the movable component 20 is parallel to the plane where the chain is located, and the axis of the roller is perpendicular to the plane where the chain is located. In this way, the chain can be stably wound around the roller, and at the same time, the force balance of the movable component 20 can be ensured, so as to avoid the chain falling off due to uneven force on the ferrule 22 on one side.

[0033] like Figure 3 As shown, the ferrule 22 has a protrusion 221, which extends into the slideway 21 and moves along the opening track of the slideway 21. Preferably, the slideways 21 are multiple and parallel to each other, each ferrule 22 is arranged on at least two slideways 21 at the same time, each ferrule 22 has at least two protrusions 221, and each slideway 21 contains at least one protrusion 221. For example, in this embodiment, two ferrules 22 and four slideways 21 are provided, each ferrule 22 is connected to two slideways 21 at the same time, two rows of protrusions 221 are provided on the ferrule 22, and the specific number of protrusions 221 in each row is not limited. The two rows of protrusions 221 are respectively contained in the two slideways 21. In this way, the movement of each ferrule 22 will be restricted by the two slideways 21 at the same time, so that the ferrule 22 is subjected to balanced force, which is conducive to the smooth sliding of the ferrule 22.

[0034] In this embodiment, the movable component 20 further includes an anti-drop plate 24, which is connected to the bottom plate 23, and the adjustment component 30 passes through the anti-drop plate 24 and is connected to the bottom plate 23. The anti-drop plate 24 has a certain thickness and is provided with a through circular hole for the adjustment component 30 to pass through. The anti-drop plate 24 can ensure that the pressure of the adjustment component 30 on the bottom plate 23 acts stably on the bottom plate 23, thereby preventing the adjustment component 30 from accidentally falling off from the bottom plate 23.

[0035] The bottom plate 23 of this embodiment is formed by bending a plate, the middle of the bottom plate 23 is closer to the fixing seat 10 than the two sides, the middle of the bottom plate 23 is connected to the adjustment assembly 30, and the two sides of the bottom plate 23 are connected to the clamping sleeve 22. This structure enables the force of the adjustment assembly 30 on the bottom plate 23 to be better transmitted to the clamping sleeve 22, so as to smoothly drive the clamping sleeve 22 to move. In order to ensure the structural strength of the bent bottom plate 23, the movable assembly 20 also includes a reinforcing plate 25, which is connected to the bottom plate 23 and is arranged at the bending part of the bottom plate 23. The reinforcing plate 25 and the bottom plate 23 are perpendicular to each other, thereby ensuring the overall strength of the bottom plate 23 and improving the rigidity and strength of the chain tensioning device.

[0036] Preferably, the fixing seat 10 is welded to the end chassis, and the clamping sleeve 22, the bottom plate 23, the reinforcing plate 25 and the anti-slip plate 24 are all welded and fixed, so as to ensure the overall rigidity and strength of the chain tensioning device.

[0037] In this embodiment, the adjustment assembly 30 includes an adjustment bolt 31, an adjustment nut 32 and a locking nut 33. The adjustment bolt 31 is inserted between the fixed seat 10 and the movable assembly 20. The adjustment bolt 31 is adjustably connected to the fixed seat 10 and abuts against the movable assembly 20. The adjustment nut 32 is connected to the fixed seat 10 and can be fixed on the fixed seat 10 by welding. The adjustment bolt 31 is adjustably connected to the adjustment nut 32. The relative position between the two can be changed by rotating the adjustment bolt 31 through the threaded fit between the adjustment bolt 31 and the adjustment nut 32. The locking nut 33 is adjustably connected to the adjusting bolt 31, and along the axial direction of the adjusting bolt 31, the adjusting nut 32 and the locking nut 33 are respectively located on both sides of the fixing seat 10. When the chain is tensioned, the locking nut 33 is tightened so that the locking nut 33 abuts against the fixing seat 10. At this time, the movement of the locking nut 33 is restricted by the fixing seat 10. Even if the adjusting bolt 31 is turned, the locking nut 33 cannot move, thereby achieving the purpose of locking the adjusting bolt 31.

[0038] It should be noted that, since the adjusting bolt 31 and the bottom plate 23 of the present embodiment are in abutment relationship, the adjusting bolt 31 abuts against the bottom plate 23 to make the movable assembly 20 as a whole slide in a direction away from the fixed seat 10. In order to ensure the effect of tensioning the chain and avoid separation between the adjusting bolt 31 and the bottom plate 23, after the chain is wound around the movable assembly 20, the length direction of the chain extends in a direction close to the fixed seat 10, such as Figure 4 As shown, in this way, when the adjusting bolt 31 pushes the bottom plate 23 to slide away from the fixing seat 10, the chain can be tensioned, and at the same time, the pulling force of the chain on the movable assembly 20 is toward the fixing seat 10, thereby ensuring that the bottom plate 23 is tightly attached to the adjusting bolt 31. Of course, the adjusting bolt 31 and the bottom plate 23 can also be connected by other components, so that the adjusting bolt 31 can not only push the bottom plate 23, but also pull the bottom plate 23, so that the movable assembly 20 can move in two directions driven by the adjusting bolt 31. In this case, the winding method of the chain is no longer subject to the above-mentioned restrictions.

[0039] In this embodiment, there are multiple adjustment components 30, that is, multiple adjustment bolts 31, adjustment nuts 32 and locking nuts 33 are provided, and they correspond to each other. Since the adjustment nuts 32 are fixedly connected to the fixing seat 10, the adjustment nuts 32 can be connected into a whole. For example, a plurality of threaded holes are opened on a plate-like member, and the threaded holes can be used as adjustment nuts 32. Each adjustment component 30 can independently drive the movable component 20 to move.

[0040] This embodiment is provided with two adjustment components 30. When the chain needs to be tightened, the locking nut 33 of one adjustment component 30 is loosened, and its adjustment bolt 31 is rotated to make the movable component 20 slide a small distance. Then, the locking nut 33 of the other adjustment component 30 is loosened, and its adjustment bolt 31 is rotated to make it move a small distance based on the movement distance of the previous adjustment bolt 31. This is repeated, and the two adjustment bolts 31 are rotated in sequence, so that the movable component 20 gradually moves away from the fixed seat 10, and the chain is gradually tightened. When the chain is tightened, the two locking nuts 33 are tightened to lock the two adjustment bolts 31. The above method enables the adjustment bolt 31 to make a small adjustment to the chain each time to ensure the tensioning effect, and at the same time avoids the occurrence of jamming between the ferrule 22 and the slideway 21, so that the movable component 20 slides smoothly.

[0041] Of course, more adjustment components 30 may be provided, and the adjustment bolts 31 of each adjustment component 30 may be rotated in turn to achieve tensioning of the chain; or only one adjustment component 30 may be provided, and the axis of the adjustment bolt 31 coincides with the axis of the movable component 20 to ensure smooth movement of the movable component 20.

[0042] It should be noted that, the multiple in the above embodiments refers to at least two.

[0043] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0044] 1. Solve the problem of insufficient chain tension of the piggyback transport vehicle in the prior art;

[0045] 2. By adjusting the assembly to change the distance between the movable assembly and the fixed seat, the movable assembly drives the chain to move, making the chain tensioned;

[0046] 3. Simple and reliable structure, high operating efficiency.

[0047] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chain tensioning device, characterized in that: include: Fixed seat (10); A movable component (20), the movable component (20) being movably arranged relative to the fixed seat (10), and the chain being wound around the movable component (20); an adjusting assembly (30), the adjusting assembly (30) being connected to both the fixing seat (10) and the movable assembly (20), and being capable of adjusting the distance between the movable assembly (20) and the fixing seat (10) so as to tighten the chain; The movable component (20) comprises: A slideway (21), wherein the opening trajectory of the slideway (21) is parallel to the movement trajectory of the movable component (20); A ferrule (22), wherein the ferrule (22) is slidably disposed on the slideway (21) and is capable of moving along a track opened by the slideway (21); A bottom plate (23), the bottom plate (23) is connected to the clamping sleeve (22) and to the adjustment assembly (30), and the adjustment assembly (30) drives the clamping sleeve (22) to slide through the bottom plate (23); the bottom plate (23) is formed by bending a plate, the middle part of the bottom plate (23) is closer to the fixing seat (10) than the two sides, the middle part of the bottom plate (23) is connected to the adjustment assembly (30), and the two sides of the bottom plate (23) are connected to the clamping sleeve (22); The movable component (20) further comprises an anti-slip plate (24), the anti-slip plate (24) is connected to the bottom plate (23), and the adjustment component (30) passes through the anti-slip plate (24) and is connected to the bottom plate (23); The movable component (20) further comprises a reinforcing plate (25), wherein the reinforcing plate (25) is connected to the bottom plate (23), and the reinforcing plate (25) and the bottom plate (23) are perpendicular to each other.

2. The chain tensioner according to claim 1, characterized in that: The ferrules (22) are multiple and arranged in pairs. The two ferrules (22) arranged in pairs are respectively located on two opposite sides of the bottom plate (23). A roller shaft for winding the chain is arranged between the two ferrules (22).

3. The chain tensioner according to claim 2, characterized in that: The connecting line of the two ferrules (22) arranged in a pair is perpendicular to the moving track line of the movable component (20).

4. The chain tensioner according to claim 1, characterized in that: The ferrule (22) has a protrusion (221), and the protrusion (221) extends into the slideway (21) and moves along the opening track of the slideway (21).

5. The chain tensioner according to claim 4, characterized in that: The slideways (21) are multiple and are opened in parallel with each other. Each of the ferrules (22) is simultaneously arranged on at least two of the slideways (21). Each of the ferrules (22) has at least two protrusions (221), and each of the slideways (21) contains at least one protrusion (221).

6. The chain tensioner according to claim 1, characterized in that: The adjustment component (30) comprises: an adjusting bolt (31), the adjusting bolt (31) being inserted between the fixing seat (10) and the movable assembly (20), the adjusting bolt (31) being adjustably connected to the fixing seat (10) and abutting against the movable assembly (20); an adjusting nut (32), the adjusting nut (32) being connected to the fixing seat (10), the adjusting bolt (31) being adjustably connected to the adjusting nut (32) so as to change the distance between the movable component (20) and the fixing seat (10); A locking nut (33), the locking nut (33) is adjustably connected to the adjusting bolt (31) and can abut against the fixing seat (10) to lock the adjusting bolt (31).

7. The chain tensioner according to claim 6, characterized in that: Along the axial direction of the adjusting bolt (31), the adjusting nut (32) and the locking nut (33) are respectively located on two sides of the fixing seat (10).

8. The chain tensioner according to claim 1, characterized in that: There are a plurality of adjustment components (30), and each adjustment component (30) is capable of driving the movable component (20) to move.

9. A piggyback transport vehicle, characterized in that: A chain tensioner comprising the chain tensioner according to any one of claims 1 to 8.

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