Self-locking type hydraulic supporting mechanism

Abstract

The invention discloses a self-locking type hydraulic supporting mechanism, and belongs to the technical field of transport trailer structures, the self-locking type hydraulic supporting mechanism specifically comprises a trailer, a hydraulic cylinder and an anti-overturning structure, and the trailer is provided with an air cylinder and a vehicle-mounted storage battery; the hydraulic cylinder is connected with a vehicle-mounted storage battery, the hydraulic cylinder replaces a front side supporting leg of the trailer, a cylinder body a of the hydraulic cylinder is installed on the front side of the trailer, and a piston rod a of the hydraulic cylinder points to the ground. The anti-overturning structure is arranged between the cylinder body a and the piston rod a and used for preventing the piston rod a from retracting inwards, the self-locking type hydraulic supporting mechanism can be remotely controlled to automatically ascend and descend (or can be operated in a cab) under the condition of power failure and fuel cut, a traction disc can be separated from a trailer, and disengaging and connecting of the tractor and the trailer can be completed in about one minute. And the labor intensity and the unhooking time are greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of transport trailer structures, and in particular to a self-locking hydraulic support mechanism. Background Art

[0002] In the process of short-distance transshipment between ports, warehouses and cities, in order to improve transportation efficiency, the mode of drop-and-hook transportation is generally adopted. Drop-and-hook transportation means that one tractor can tow multiple trailers. During the transportation process, the driver and the tractor do not need to wait for the trailer to load or unload goods. They can directly detach the trailer and replace it with an empty or fully loaded trailer for transportation, which greatly improves production efficiency. It is widely used in short-distance transshipment such as ports and warehouses.

[0003] The problem existing in the existing hooking and unhooking is that, whether it is a heavy load or a light load, the trailer must be raised and lowered by manually cranking the legs to separate the tractor and the trailer, thereby achieving unhooking; but manual manual cranking of the legs takes a long time, and it is also very laborious with heavy loads. The transportation time for short-distance transshipment is not long, generally about half an hour, while manual unhooking and unhooking takes more than ten minutes, and as a result, time is wasted on unhooking and unhooking. Based on this situation, this remote-controlled automatic lifting and locking hooking and unhooking mechanism is designed and developed. Summary of the invention

[0004] The purpose of the present invention is to provide a self-locking hydraulic support mechanism, which can be automatically raised and lowered by remote control (it can also be operated in the cab), so that the traction plate can be separated from the trailer, and the traction vehicle and trailer can be uncoupled and connected in about 1 minute, which greatly reduces the labor intensity and uncoupling time.

[0005] In order to solve the technical problem of time-consuming and labor-intensive detachment operations in the prior art, the present application provides a self-locking hydraulic support mechanism, including a trailer, a hydraulic cylinder and an anti-overturning structure, wherein the trailer is equipped with an air tank and an on-board battery; the hydraulic cylinder is connected to the on-board battery, the hydraulic cylinder replaces the front side legs of the trailer, the cylinder body a of the hydraulic cylinder is installed on the front side of the trailer, and the piston rod a of the hydraulic cylinder points to the ground; the anti-overturning structure is arranged between the cylinder body a and the piston rod a, and is used to prevent the piston rod a from retracting in the event of power outages and oil failures.

[0006] Furthermore, the present application provides a self-locking hydraulic support mechanism, which also includes a cylinder body protective cover and a piston rod protective cover, wherein the cylinder body protective cover clamps and wraps the cylinder body a, the upper section of the cylinder body protective cover is fixed to the trailer, the piston rod protective cover clamps and wraps the piston rod a, the upper end of the piston rod protective cover is inserted between the cylinder body a and the cylinder body protective cover, and the lower end is connected to the outer end of the piston rod a through a pin shaft.

[0007] Furthermore, the present application provides a self-locking hydraulic support mechanism, which also includes a support foot plate, wherein an ear plate is provided at each end of the support foot plate, and the two ear plates are respectively hinged to the two ends of the pin shaft.

[0008] Furthermore, the present application provides a self-locking hydraulic support mechanism, wherein the anti-overturning structure includes a rack, a ratchet, a ratchet protective cover and a reset torsion spring; the ratchet protective cover is fixed to the outer wall of the cylinder protective cover, the lower section of the rack is installed on the outer wall of the piston rod protective cover, and the upper section extends into the ratchet protective cover, the ratchet is fixed to the inner wall of the ratchet protective cover through a rotating shaft, and the reset torsion spring is sleeved on the rotating shaft, and the reset torsion spring acts on the ratchet to press the ratchet against the rack.

[0009] Furthermore, the present application provides a self-locking hydraulic support mechanism, which also includes a cylinder and a cylinder protective sleeve, wherein the cylinder is connected to the air storage cylinder, and the cylinder protective sleeve is installed on the outer wall of the ratchet protective sleeve. The cylinder includes a cylinder body b and a piston rod b, and the cylinder body b is installed on the cylinder protective sleeve, and the end of the piston rod b is connected to the ratchet.

[0010] Furthermore, the present application provides a self-locking hydraulic support mechanism, wherein a cylinder articulated seat is arranged inside the cylinder protective sleeve, and the cylinder a is hinged to the cylinder articulated seat.

[0011] Compared with the prior art, the self-locking hydraulic support mechanism provided by the present invention has the following beneficial effects: the hydraulic cylinder body is installed inside the support body, which protects the hydraulic cylinder well and reduces the structural size of the whole machine, making it convenient to install on a cargo trailer and directly replace the original manual mechanical legs;

[0012] Secondly, because it is installed on a semi-trailer, it is more convenient to use a pneumatic cylinder to control the switch lock of the ratchet. The brake system of the semi-trailer is pneumatic brake, and the air source of the cylinder comes from the air tank on the vehicle. Moreover, the cylinder is very small and will not have any effect on the brake system.

[0013] The self-locking of the ratchet is achieved by the reset torsion spring inside the one-way cylinder. When inflating, the cylinder retracts and the ratchet opens. As long as the air is not cut off, it will remain in the open state until the control button gives a gas cut-off signal. The cylinder rod can then be pushed out by the spring in the cylinder to make the ratchet lock the rack. This will also add an insurance to the self-locking mechanism, that is, in any state of sudden situations such as power outages and oil failures, the main support will automatically lock to ensure that the entire vehicle will not tip over or other accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a self-locking hydraulic support mechanism proposed by the present invention;

[0015] Figure 2 A schematic diagram of a state of a self-locking hydraulic support mechanism proposed by the present invention;

[0016] Figure 3 This is a schematic diagram of the second state of a self-locking hydraulic support mechanism proposed by the present invention.

[0017] Among them: 1. Cylinder body a; 2. Piston rod a; 3. Cylinder body protective cover; 4. Piston rod protective cover; 5. Support foot plate; 6. Cylinder body hinge seat; 7. Pin shaft; 8. Ear plate; 9. Rack; 10. Ratchet; 11. Ratchet protective cover; 12. Rotating shaft; 13. Cylinder protective cover; 14. Cylinder body b; 15. Piston rod b. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected 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.

[0021] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings, and the technical effects that can be achieved by the present invention are further described.

[0022] like Figure 1As shown, this embodiment provides a self-locking hydraulic support mechanism, including a trailer, a hydraulic cylinder and an anti-overturning structure, the trailer is equipped with an air tank and an on-board battery, the hydraulic cylinder is connected to the on-board battery, the hydraulic cylinder replaces the front support leg of the trailer, the cylinder body a1 of the hydraulic cylinder is installed on the front side of the trailer, and the piston rod a2 of the hydraulic cylinder points to the ground; it also includes a cylinder body protection cover 3, a piston rod protection cover 4 and a support foot plate 5, the cylinder body protection cover 3 clamps and wraps the cylinder body a1, the cylinder A cylinder articulated seat 6 is arranged in the cylinder protective sleeve 3, and the cylinder a1 is hinged to the cylinder articulated seat 6; the upper section of the cylinder protective sleeve 3 is fixed to the trailer, and the piston rod protective sleeve 4 clamps and wraps the piston rod a2, the upper end of the piston rod protective sleeve 4 is inserted between the cylinder a1 and the cylinder protective sleeve 3, and the lower end is connected to the outer end of the piston rod a2 through a pin shaft 7; an ear plate 8 is arranged at each end of the supporting foot plate 5, and the two ear plates 8 are respectively hinged to the two ends of the pin shaft 7;

[0023] The anti-overturning structure is arranged between the cylinder a1 and the piston rod a2, and is used to prevent the piston rod a2 from retracting in the event of power failure and oil failure; specifically, the anti-overturning structure includes a rack 9, a ratchet 10, a ratchet protective sleeve 11 and a reset torsion spring; the ratchet protective sleeve 11 is fixed to the outer wall of the cylinder protective sleeve 3, the lower section of the rack 9 is installed on the outer wall of the piston rod protective sleeve 4, and the upper section extends into the ratchet protective sleeve 11, the ratchet 10 is fixed to the inner wall of the ratchet protective sleeve 11 through a rotating shaft 12, and the reset torsion spring is sleeved on the rotating shaft 12, and the reset torsion spring acts on the ratchet 10 to press the ratchet 10 against the rack 9;

[0024] In addition, it also includes a cylinder and a cylinder protective sleeve 13, the cylinder is connected to the air storage cylinder, the cylinder protective sleeve 13 is installed on the outer wall of the ratchet protective sleeve 11, the cylinder includes a cylinder body b14 and a piston rod b15, the cylinder body b14 is installed on the cylinder protective sleeve 13, and the end of the piston rod b15 is connected to the ratchet 10.

[0025] The working process and principle of a self-locking hydraulic support mechanism provided in this embodiment are as follows: Figure 2 and Figure 3When the main support mechanism needs to be retracted, the piston rod a2 needs to rise and break away from the contact with the ground. At this time, due to the heavy weight of the trailer, pressure is applied to the ratchet 10 through the rack 9, and the ratchet 10 effectively prevents the piston rod a2 from retracting. At this time, it is necessary to control the hydraulic cylinder to extend the piston rod a2, and the rack 9 pushes the ratchet 10 outward, that is, the electromagnetic reversing valve first opens the descending channel of the main support mechanism to make the ratchet 10 get rid of the heavy pressure, and opens the cylinder while pushing the ratchet 10, so that the piston rod b15 retracts, the reset torsion spring is compressed, and the piston rod b15 drives the ratchet 10 away from the rack 9, and then the electromagnetic reversing valve opens the upper channel of the main support mechanism. When the tractor needs to be unhooked, the air source of the cylinder is cut off, and the reset torsion spring forces the ratchet 10 to rotate and press against the rack 9. At this time, the rack 9 can only move downward and extend, and the retracting movement will be stopped by the ratchet 10. The piston rod a2 with the rack 9 will be stuck in the bayonet of the rack 9 every time a tooth is extended, so it can be locked at any time. Compared with the traditional support mechanism, the self-locking hydraulic support mechanism of this embodiment can operate the lifting and lowering of the support device by wireless remote control as long as it is near the cab or the main support, thereby completing the connection and disconnection of the tractor, greatly reducing the labor intensity and significantly improving the work efficiency.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-locking hydraulic support mechanism, comprising a trailer, wherein the trailer is equipped with an air reservoir and an on-board battery, characterized in that: It also includes a hydraulic cylinder and an anti-rollover structure; the hydraulic cylinder is connected to a vehicle-mounted battery, the hydraulic cylinder replaces the front support leg of the trailer, the cylinder body a(1) of the hydraulic cylinder is installed on the trailer, and the piston rod a(2) of the hydraulic cylinder points to the ground; the anti-rollover structure is arranged between the cylinder body a(1) and the piston rod a(2) to prevent the piston rod a(2) from retracting in the event of power failure or oil failure.

2. The self-locking hydraulic support mechanism according to claim 1, characterized in that: It also includes a cylinder body protective sleeve (3) and a piston rod protective sleeve (4), wherein the cylinder body protective sleeve (3) clamps and wraps the cylinder body a (1), the upper section of the cylinder body protective sleeve (3) is fixed to the trailer, and the piston rod protective sleeve (4) clamps and wraps the piston rod a (2), the upper end of the piston rod protective sleeve (4) is inserted between the cylinder body a (1) and the cylinder body protective sleeve (3), and the lower end is connected to the outer end of the piston rod a (2) through a pin shaft (7).

3. The self-locking hydraulic support mechanism according to claim 2, characterized in that: It also comprises a supporting foot plate (5), each of the two ends of which is provided with an ear plate (8), and the two ear plates (8) are respectively hinged to the two ends of the pin shaft (7).

4. The self-locking hydraulic support mechanism according to claim 2, characterized in that: The anti-overturning structure comprises a rack (9), a ratchet (10), a ratchet protective sleeve (11) and a reset torsion spring; the ratchet protective sleeve (11) is fixed to the outer wall of the cylinder protective sleeve (3); the lower section of the rack (9) is installed on the outer wall of the piston rod protective sleeve (4), and the upper section extends into the ratchet protective sleeve (11); the ratchet (10) is fixed to the inner wall of the ratchet protective sleeve (11) through a rotating shaft (12); the reset torsion spring is sleeved on the rotating shaft (12); the reset torsion spring acts on the ratchet (10) to press the ratchet (10) against the rack (9).

5. The self-locking hydraulic support mechanism according to claim 4, characterized in that: It also includes a cylinder and a cylinder protective sleeve (13), wherein the cylinder is connected to the air storage cylinder, the cylinder protective sleeve (13) is installed on the outer wall of the ratchet protective sleeve (11), the cylinder includes a cylinder body b (14) and a piston rod b (15), the cylinder body b (14) is installed on the cylinder protective sleeve (13), and the end of the piston rod b (15) is connected to the ratchet (10).

6. The self-locking hydraulic support mechanism according to claim 2, characterized in that: A cylinder articulated seat (6) is arranged inside the cylinder protective sleeve (3), and the cylinder a (1) is hinged to the cylinder articulated seat (6).

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