Lifting hydraulic system

Abstract

The utility model provides a lifting hydraulic system which comprises a hydraulic oil tank, a front carriage oil cylinder, a front support, a rear carriage oil cylinder, a rear support, a reversing valve, a switching valve and a gear pump. The gear pump is connected with the power takeoff, the hydraulic oil tank and a first connector of the reversing valve, a second connector of the reversing valve is connected with a first connector of the switching valve, a second connector of the switching valve is connected with the front compartment oil cylinder, and a third connector of the switching valve is connected with the rear compartment oil cylinder. The reversing valve and the switching valve are connected with the control air valve, and an external air source is connected with the control air valve; the functions of back-and-forth turning and left-and-right turning of the carriage of the truck can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of truck compartment lifting, in particular to a lifting hydraulic system. Background Art

[0002] The existing vehicles can only realize the front and rear flipping of the truck compartment, which has great restrictions on the transported goods and the use site. With the development of the economic form and the needs of users, the market urgently needs a function that can not only realize the front and rear flipping of the truck compartment, but also the left and right flipping of the truck compartment, but the existing trucks cannot meet the above requirements.

[0003] In view of this, it is necessary to provide a novel lifting hydraulic system to overcome the above-mentioned defects. Utility Model Content

[0004] The utility model aims to provide a lifting hydraulic system, which can realize the functions of front and rear flipping and left and right flipping of the truck compartment, and meet the above needs.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is implemented as follows: a lifting hydraulic system includes a hydraulic oil tank, a front compartment oil cylinder, a front support, a rear compartment oil cylinder, a rear support, a reversing valve, a switching valve and a gear pump;

[0006] The front support includes a first coupling shaft, a first seat cover and a first seat ear, the front carriage oil cylinder is movably installed in the first seat cover of the front support, the first coupling shaft is installed along the left-right direction of the front chassis of the truck and is hinged with the front carriage oil cylinder and the first seat cover, the first seat cover is installed along the front-back direction of the front chassis of the truck, and two opposite second coupling shafts are extended and formed on the first seat cover, the two second coupling shafts are distributed in a direction perpendicular to the first coupling shaft, and each second coupling shaft is hinged with the corresponding first seat ear;

[0007] The rear support includes a third coupling shaft, a second seat cover and a second seat ear, the rear compartment oil cylinder is movably installed in the second seat cover of the rear support, the third coupling shaft is installed along the left-right direction of the rear chassis of the truck and is hinged with the rear compartment oil cylinder and the second seat cover, the second seat cover is installed along the front-back direction of the front chassis of the truck, and two opposite fourth coupling shafts are extended and formed on the second seat cover, the two fourth coupling shafts are distributed in a direction perpendicular to the third coupling shaft, and each fourth coupling shaft is hinged with the corresponding second seat ear;

[0008] The gear pump is connected to the power take-off, the gear pump is connected to the hydraulic oil tank, the gear pump is connected to the first interface of the reversing valve, the second interface of the reversing valve is connected to the first interface of the switching valve, the second interface of the switching valve is connected to the front compartment cylinder, the third interface of the switching valve is connected to the rear compartment cylinder, the reversing valve and the switching valve are connected to the control air valve, and the external air source is connected to the control air valve.

[0009] Preferably, two opposite second coupling shafts are extended from the outer ring of the first seat cover, and the first seat ear is fixedly connected to the front chassis of the truck.

[0010] Preferably, two opposite fourth coupling shafts are extended from the outer ring of the second seat cover, and the second seat ear is fixedly connected to the rear chassis of the truck.

[0011] Preferably, the reversing valve is installed on the hydraulic oil tank.

[0012] Preferably, the reversing valve is a pneumatic reversing valve.

[0013] Compared with the existing technology, the beneficial effect is that it can realize the function of the truck's cabin flipping forward, backward and left and right, which greatly improves the utilization value of the vehicle, enhances the vehicle's use requirements for multiple working conditions and multiple types of goods, and improves the economic value for users. At present, the vehicle system has been widely used in export vehicles.

[0014] Other features and advantages of the utility model will be stated in the following description, and some will be apparent from the description, or can be understood through the implementation of the utility model. The features and advantages of the utility model can be realized and obtained by the elements and combinations specifically pointed out in the attached application scope. These and other features of the utility model will become more clearly understood according to the following description and the attached claims, or can be understood through the implementation of the embodiments described in the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural schematic diagram of the lifting hydraulic system provided by the utility model.

[0017] Figure 2 Schematic diagram of the front carriage oil cylinder's movement in the front and rear directions.

[0018] Figure 3 Schematic diagram of the left-right movement of the front carriage cylinder.

[0019] Figure 4 It is a schematic diagram of the installation of the front and carriage cylinders on the front and rear truck frames respectively.

[0020] Figure numerals: 1. hydraulic oil tank; 2. front compartment oil cylinder; 3. front support; 31. first coupling shaft; 32. first seat cover; 33. first seat ear; 34. second coupling shaft; 4. rear compartment oil cylinder; 5. rear support; 51. third coupling shaft; 52. second seat cover; 53. second seat ear; 54. fourth coupling shaft; 6. reversing valve; 7. switching valve; 8. gear pump; 9. front chassis of truck; 10. rear chassis of truck; 11. control air valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and beneficial technical effect of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the utility model.

[0022] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] It should also be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be determined according to the specific circumstances.

[0024] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" refers to two or more, unless otherwise clearly and specifically defined.

[0025] See also Figures 1 to 4 The utility model provides a lifting hydraulic system, which can realize the function of front and rear flipping and left and right flipping of the truck compartment, including a hydraulic oil tank 1, a front compartment oil cylinder 2, a front support 3, a rear compartment oil cylinder 4, a rear support 5, a reversing valve 6, a switching valve 7 and a gear pump 8;

[0026] The front support 3 includes a first coupling shaft 31, a first seat cover 32 and a first seat ear 33. The front compartment oil cylinder 2 is movably installed in the first seat cover 32 of the front support 3. The first coupling shaft 31 is installed along the left-right direction of the front chassis 9 of the truck and is hinged with the front compartment oil cylinder 2 and the first seat cover 32. The first seat cover 32 is installed along the front-back direction of the front chassis 9 of the truck, and two opposite second coupling shafts 34 are extended and formed on the first seat cover 32. The two second coupling shafts 34 are distributed in a direction perpendicular to the first coupling shaft 31, and each second coupling shaft 34 is hinged with a corresponding first seat ear 33.

[0027] The rear support 5 includes a third coupling shaft 51, a second seat cover 52 and a second seat ear 53. The rear compartment oil cylinder 4 is movably installed in the second seat cover 52 of the rear support 5. The third coupling shaft 51 is installed along the left-right direction of the truck rear chassis 10 and is hinged with the rear compartment oil cylinder 4 and the second seat cover 52. The second seat cover 52 is installed along the front-back direction of the truck front chassis 9. Two opposite fourth coupling shafts 54 are extended and formed on the second seat cover 52. The two fourth coupling shafts 54 are distributed in a direction perpendicular to the third coupling shaft 51. Each fourth coupling shaft 54 ​​is hinged with a corresponding second seat ear 53.

[0028] The gear pump 8 is connected to the power take-off, and the reversing valve 6 is installed on the hydraulic oil tank 1. The gear pump 8 is connected to the hydraulic oil tank 1 through an oil pipe. The gear pump 8 is also connected to the first interface of the reversing valve 6 through an oil pipe. The second interface of the reversing valve 6 is connected to the first interface of the switching valve 7 through an oil pipe. The second interface of the switching valve 7 is connected to the front compartment cylinder 2 through an oil pipe. The third interface of the switching valve 7 is connected to the rear compartment cylinder 4 through an oil pipe. The reversing valve 6 and the switching valve 7 are both connected to the control air valve 11 through an air pipe, and an external air source is connected to the control air valve 11.

[0029] It should be noted that, in this embodiment, the reversing valve 6 is a pneumatic reversing valve 6 .

[0030] During lifting, the power take-off connected to the gearbox drives the gear pump 8 to move. The gear pump 8 absorbs the hydraulic oil in the hydraulic oil tank 1 through the oil suction pipe, and outputs the hydraulic oil to the reversing valve 6 through the oil pipe. The hydraulic oil is transported to the switching valve 7 via the reversing valve 6, and then transported to the front compartment cylinder 2 and the rear compartment cylinder 4 respectively through the switching valve 7 to perform the lifting and unloading action of the compartment (the front and rear compartments of the truck are flipped forward and backward). At the same time, the toggle switch of the control air valve 11 is turned to control the working mode of the switching valve to realize the switching action.

[0031] Since the first seat cover 32 is installed along the front-to-back direction of the front chassis 9 of the truck, and two opposite second coupling shafts 34 are extended on the outer ring of the first seat cover 32, the two second coupling shafts 34 are distributed in a direction perpendicular to the first coupling shaft 31, and each second coupling shaft 34 is hinged to a corresponding first seat ear 33, so that the front compartment hydraulic cylinder can move in the first seat cover 32 along the left-right direction (left-right rollover) of the front chassis 9 of the truck.

[0032] Similarly, since the second seat cover 52 is installed along the front-to-back direction of the truck rear chassis 10, and two relative fourth coupling shafts 54 are extended on the outer circle of the second seat cover 52, the two fourth coupling shafts 54 are distributed in a direction perpendicular to the third coupling shaft 51, and each fourth coupling shaft 54 ​​is hinged to a corresponding second seat ear 53, so that the rear compartment hydraulic cylinder can move in the second seat cover 52 along the left-right direction (left-right flipping) of the truck rear chassis 10, thereby realizing the functions of front-to-back and left-right flipping of the truck compartment.

[0033] In a preferred embodiment, two opposite second coupling shafts 34 are extended from the outer ring of the first seat cover 32 , and the first seat ear 33 is fixedly connected to the front chassis 9 of the truck.

[0034] In a preferred embodiment, two opposite fourth coupling shafts 54 are extended from the outer ring of the second seat cover 52 , and the second seat ear 53 is fixedly connected to the rear chassis 10 of the truck.

[0035] The present invention is not limited to what is described in the specification and implementation modes, and therefore, additional advantages and modifications can be easily realized by those familiar with the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. A lifting hydraulic system, characterized in that: It comprises a hydraulic oil tank (1), a front compartment oil cylinder (2), a front support (3), a rear compartment oil cylinder (4), a rear support (5), a reversing valve (6), a switching valve (7) and a gear pump (8); The front support (3) comprises a first coupling shaft (31), a first seat cover (32) and a first seat ear (33); the front carriage oil cylinder (2) is movably installed in the first seat cover (32) of the front support (3); the first coupling shaft (31) is installed along the left-right direction of the front chassis (9) of the truck and is hinged to the front carriage oil cylinder (2) and the first seat cover (32); the first seat cover (32) is installed along the front-back direction of the front chassis (9) of the truck, and two opposite second coupling shafts (34) are extended from the first seat cover (32); the two second coupling shafts (34) are distributed in a direction perpendicular to the first coupling shaft (31), and each second coupling shaft (34) is hinged to the corresponding first seat ear (33); The rear support (5) comprises a third coupling shaft (51), a second seat cover (52) and a second seat ear (53); the rear compartment oil cylinder (4) is movably installed in the second seat cover (52) of the rear support (5); the third coupling shaft (51) is installed along the left-right direction of the truck rear chassis (10) and is hinged with the rear compartment oil cylinder (4) and the second seat cover (52); the second seat cover (52) is installed along the front-back direction of the truck front chassis (9); and two opposite fourth coupling shafts (54) are extended from the second seat cover (52); the two fourth coupling shafts (54) are distributed in a direction perpendicular to the third coupling shaft (51), and each fourth coupling shaft (54) is hinged with a corresponding second seat ear (53); The gear pump (8) is connected to the power take-off, the gear pump (8) is connected to the hydraulic oil tank (1), the gear pump (8) is connected to the first interface of the reversing valve (6), the second interface of the reversing valve (6) is connected to the first interface of the switching valve (7), the second interface of the switching valve (7) is connected to the front compartment oil cylinder (2), the third interface of the switching valve (7) is connected to the rear compartment oil cylinder (4), the reversing valve (6) and the switching valve (7) are connected to the control air valve (11), and the external air source is connected to the control air valve (11).

2. The lifting hydraulic system according to claim 1, characterized in that: Two opposite second coupling shafts (34) are extended from the outer ring of the first seat cover (32), and the first seat ear (33) is fixedly connected to the front chassis (9) of the truck.

3. The lifting hydraulic system according to claim 1, characterized in that: Two opposite fourth coupling shafts (54) are extended from the outer ring of the second seat cover (52), and the second seat ear (53) is fixedly connected to the rear chassis (10) of the truck.

4. The lifting hydraulic system according to claim 1, characterized in that: The reversing valve (6) is installed on the hydraulic oil tank (1).

5. The lifting hydraulic system according to claim 1, characterized in that: The reversing valve (6) is a pneumatic reversing valve.

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