Air suspension support suitable for cab of high-horsepower hybrid tractor

Abstract

An air suspension support suitable for a cab of a high-horsepower hybrid tractor comprises an L-shaped pull rod, an air pump and two sets of suspension seats which are the same in structure and are symmetrically arranged, each set of suspension seat comprises a fixed support, a supporting arm, a supporting seat and an air spring, and the two ends of each air spring pass through hinge seats; the two ends of the L-shaped pull rod are hinged to the side wall of the fixing support and the top of the supporting base respectively, the two ends of the supporting arm are hinged to the bottom of the fixing support and the top of the supporting base respectively through hinge bases, and the two ends of the L-shaped pull rod are hinged to the bottom of the fixing support and the top of the supporting base respectively through a hinge support a and a hinge support b. And the fixed bracket is hinged to the top of the supporting seat in one group of suspension seats and the side wall of the fixed bracket in the other group of suspension seats. The fixing support, the supporting arm, the supporting seat and the air spring are assembled to form the suspension seat, vibration absorption and damping effects are achieved through the elastic characteristic of air in the air spring, and the stability and comfort performance of a cab are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tractor technical field, concretely relates to a kind of air suspension support suitable for large horsepower hybrid tractor cab. BACKGROUND

[0002] As an important component of agricultural machinery, tractor is widely used in various links such as plowing, seeding and fertilizing. With the continuous advancement of agricultural modernization, the comfort, safety and controllability of tractor are also increasingly high. The cab of traditional tractor usually adopts rigid support, as shown in FIG. 1, the rigid support 1' is fastened to the bottom of the cab 2' by bolts, and only rubber pads 3' are used for buffering between them. This design has certain limitations when bearing heavy load, especially in complex terrain and high-speed driving state, the stability and comfort of the cab will be affected. Figure 1

[0003] The air suspension technology with good shock absorption and shock isolation performance can effectively improve the stability and operation comfort of mechanical equipment. When improving the support of large horsepower hybrid tractor cab, it is meaningful to design an air suspension support specifically suitable for large horsepower cab. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, the purpose of the utility model is to provide an air suspension support suitable for large horsepower hybrid tractor cab to solve the problem that the existing rigid support cannot effectively reduce shock to improve the stability and comfort performance of the cab.

[0005] The utility model is realized by the following technical schemes:

[0006] An air suspension support suitable for large horsepower hybrid tractor cab comprises an L-shaped pull rod, an air pump and two groups of suspension seat substructures which are the same in structure and symmetrically arranged, each group of suspension seat substructure comprises a fixed support, a support arm, a support seat and an air spring, the initial positions of the support arm and the air spring are vertically arranged, the fixed support is fastened to the bottom of the cab by bolts, the two ends of the air spring are connected to the side wall of the fixed support and the top of the support seat through hinged seats, the two ends of the support arm are connected to the bottom of the fixed support and the top of the support seat through hinged seats, the two ends of the L-shaped pull rod are connected to the top of the support seat in one group of suspension seat substructure and the side wall of the fixed support in the other group of suspension seat substructure through hinged seats a and b, the turning direction of the air spring is perpendicular to the turning direction of the support arm, the turning direction of the L-shaped pull rod is consistent with the turning direction of the support arm, the bottom of the air spring is provided with a hole and connected to the air pump through a pipeline, the air pump is installed on the tractor body, and the bottom of the support seat is fixed on the transmission assembly of the tractor.​

[0007] Preferably, a fixing rod is welded on the side wall of the fixing support in each group of the suspension seat, and a height valve is fixed on the other end of the fixing rod.

[0008] Preferably, a height sensor is further fixed on the other end of the fixing rod.

[0009] Preferably, one end of the L-shaped pull rod is designed in a segmented manner and comprises a body and an adjusting rod, and the end is located at the same horizontal position as the hinge seat d, and the adjusting rod is provided with a threaded section with a certain length at both ends and is arranged in cooperation with a threaded hole formed on the body.

[0010] Preferably, the support seat is provided with a reinforcing rib.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. The fixing support, the support arm, the support seat and the air spring are assembled into the suspension seat, the elastic characteristics of the gas in the air spring are utilized to realize the absorption and damping effect of vibration, the comfort of the cab is improved, the fatigue of the driver is reduced, and the maintenance frequency and cost are reduced.

[0013] 2. The left and right height valves are designed, the gas pressure in the system of the left and right suspension seats is adjusted individually or synchronously, and different loads and driving conditions are adapted.

[0014] 3. The height sensor is increased, the suspension height is monitored in real time, the height of the air suspension is automatically adjusted according to the data change, and the best suspension position is ensured.

[0015] 4. The pull rod is increased between the two suspension seats, when the air spring works, the force on both sides is evenly distributed, the movement between the air bags of the two air springs is ensured to be coordinated, when one air bag is compressed due to load change, the connecting rod can help the other air bag to expand or compress in a proper way, and more balanced supporting effect is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic view of the existing rigid support for the tractor cab.

[0018] Figure 2The utility model is suitable for the structure schematic drawing of air suspension support of large horsepower hybrid tractor cab which is installed at the bottom of the cab.

[0019] Figure 3 The utility model is suitable for the stereogram of air suspension support of large horsepower hybrid tractor cab (air pump is not drawn out).

[0020] Figure 4 The Figure 3 top view.

[0021] Among them, L-shaped pull rod 1, body 101, adjusting rod 102, air pump 2, suspension seat 3, fixed support 301, support arm 302, support seat 303, air spring 304, hinged seat 4, fixed rod 5, height valve 6, height sensor 7, reinforcing rib 8, cab 9, hinged support a, hinged support b. DETAILED DESCRIPTION

[0022] In order to make the personnel in the technical field better understand the present application scheme, below will combine the drawings in the embodiment of the present application, and the technical scheme in the embodiment of the present application is described clearly and completely, obviously, the described embodiment is only a part of the embodiment of the present application, rather than all the embodiments. Based on the embodiment in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0023] The technical scheme of the utility model will be further explained below in combination with the drawings. Figures 2-4 It shows a kind of air suspension support suitable for large horsepower hybrid tractor cab, including: L-shaped pull rod 1, air pump 2 and two groups of same structure and mutually symmetrical suspension seat 3, each group of suspension seat 3 includes fixed support 301, support arm 302, support seat 303 and air spring 304, the starting position of support arm 302 and air spring 304 is vertically arranged, fixed support 301 is fastened to the bottom of cab by bolt, the two ends of air spring 304 are hinged to the side wall of fixed support 301, the top of support seat 303 respectively by hinged seat 4, the two ends of support arm 302 are hinged to the bottom of fixed support 301, the top of support seat 303 respectively by hinged seat.

[0024] The two ends of the L-shaped pull rod 1 are respectively hinged to the top of the supporting seat 303 in one set of the suspension seat 3 and the side wall of the fixed support 301 in another set of the suspension seat 3 through the hinge supports a and b. It can be seen that the two ends of the L-shaped pull rod 1 are not in a horizontal position, and the design is to adjust the posture and stability of the fixed support 301 and help offset the imbalance caused by the gravity center deviation in the tractor driving process or external force. The L-shaped pull rod 1 is added between the left and right suspension seats 3, so that when the air spring 304 works, the forces on both sides are evenly distributed, ensuring the coordinated movement between the air bags of the two air springs 304, and when one air bag is compressed due to load change, the L-shaped pull rod 1 can help the other air bag to expand or compress in a proper way, so that a more balanced supporting effect is achieved. The bottom of the air spring 304 is provided with a hole and is communicated with the air pump 2 through a pipeline, the air pump 2 is installed on the tractor body, and is installed in the rear processing part of the tractor as a gas supply part, so that the space is fully utilized, and the bottom of the supporting seat 303 is fixed on the transmission assembly of the tractor. The fixed support 301, the supporting arm 302, the supporting seat 303 and the air spring 304 are assembled into the suspension seat 3, the elastic properties of the gas in the air spring 304 are used to realize the shock absorption and damping effect, the comfort of the cab is improved, the fatigue of the driver is reduced, and the maintenance frequency and cost are reduced.

[0025] As Figure 3 The turning direction of the air spring 304 is perpendicular to the turning direction of the supporting arm 302, the turning direction of the L-shaped pull rod 1 is consistent with the turning direction of the supporting arm 302, so that when the tractor vibrates forward, backward, left and right during driving, the vibrations can be buffered by the combined displacement of the fixed support 301, the supporting arm 302, the supporting seat 303 and the air spring 304, and the stability and comfort of the cab are improved.

[0026] As an embodiment of the utility model, for each set of the suspension seat 3, a fixed rod 5 is further welded on the side wall of the fixed support 301, and a height valve 6 is fixed on the other end of the fixed rod 5. The gas pressure in the air spring 304 in the left and right suspension seats 3 is adjusted separately or synchronously through the left and right height valves 6, so as to adapt to different loads and driving conditions.

[0027] As another embodiment of the utility model, in order to monitor the suspension height in real time, the height of the air suspension is automatically adjusted according to the data change, so as to ensure the best suspension position, and a height sensor 7 is further fixed on the other end of the fixed rod 5.

[0028] It is worth mentioning that the height valve and the height sensor are both prior art, and will not be repeated here.

[0029] In order to make the distance between the two sets of suspension seats 3 adaptable to the spacing between the rear wheels of the tractor, one end of the L-shaped tie rod 1 is designed in sections, including the body 101 and the adjusting rod 102. This end is at the same horizontal position as the hinge seat d. Both ends of the adjusting rod 102 are provided with threaded sections of a certain length, which are matched with the threaded holes opened on the body 101.

[0030] To strengthen the support of the suspension seat 3, such as Figure 2 As shown, a reinforcing rib 8 is provided on the support base 303. The reinforcing rib 8 is designed below the force application point of the air spring 304 to increase the overall strength of the air spring 304, help to evenly distribute the force applied to the air spring 304, and reduce the risk of failure.

[0031] The working principle of this utility model:

[0032] Install the fixed bracket 301, support arm 302, support base 303 and air spring 304. Figure 2 As shown, the suspension seats 3 are assembled, and then the two sets of suspension seats 3 are connected by L-shaped tie rods 1. The fixing bracket 301 is then fastened to the bottom of the cab 9 with bolts. The air pump 2 is connected to the bottom hole of the air spring 304 through a pipe, completing the installation. When the tractor is running, the cab 9 is affected by vibration. The two sets of suspension seats 3 connected to it bear the force, buffering and damping the vibration of the cab, improving the stability and comfort of the cab 9.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic suspension bracket suitable for use in a cab of a high horsepower hybrid tractor, characterized in that: It includes L-shaped pull rod (1), air pump (2) and two groups of structure same and mutually symmetrical setting suspension seat (3), each group of suspension seat (3) includes fixed support (301), support arm (302), support seat (303) and air spring (304), the starting position of support arm (302) and air spring (304) is vertically arranged, the fixed support (301) is fastened to the bottom of the cab by bolt, both ends of the air spring (304) are hingedly connected to the side wall of the fixed support (301) and the top of the support seat (303) through the hinged seat (4), both ends of the support arm (302) are hingedly connected to the bottom of the fixed support (301) and the top of the support seat (303) through the hinged seat, both ends of the L-shaped pull rod (1) are hingedly connected to the top of the support seat (303) in one group of suspension seat (3) and the side wall of the fixed support (301) in another group of suspension seat (3) through hinged support a and hinged support b, the turning direction of the air spring (304) is perpendicular to the turning direction of the support arm (302), the turning direction of the L-shaped pull rod (1) is consistent with the turning direction of the support arm (302), the bottom of the air spring (304) is provided with a hole and is communicated with the air pump (2) through a pipeline, the air pump (2) is installed on the tractor body, and the bottom of the support seat (303) is fixed on the transmission assembly of the tractor.

2. The air suspension strut suitable for use in a cab of a high horsepower hybrid tractor as claimed in claim 1, wherein: For each group of suspension seat (3), the side wall of the fixed support (301) is further welded with a fixed rod (5), and the other end of the fixed rod (5) is fixed with a height valve (6).

3. The air suspension strut suitable for use in a cab of a high-horsepower hybrid tractor of claim 2, wherein: The other end of the fixed rod (5) is further fixed with a height sensor (7).

4. The air suspension strut suitable for use in a cab of a high horse power hybrid tractor as claimed in claim 1 or 3 wherein: One end of the L-shaped pull rod (1) is designed in sections and includes a body (101) and an adjusting rod (102), and the end is located at the same horizontal position as the hinged seat d, both ends of the adjusting rod (102) are provided with a length of threaded section, which is matched with the threaded hole formed on the body (101).

5. The air suspension strut suitable for use in a cab of a high horsepower hybrid tractor of claim 1, wherein: The support seat (303) is provided with a reinforcing rib (8).

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