Rear suspension device and crawler cultivator

Abstract

The utility model discloses a rear suspension device and a crawler cultivator, and particularly relates to a crawler cultivator, the crawler cultivator comprises a first connecting part and a second connecting part, the end parts of the first connecting part and the second connecting part are hinged and assembled, a sliding groove is formed in the second connecting part, and a guide rod on which a sliding piece is assembled in a sliding manner is fixedly mounted in the sliding groove; the sliding piece is arranged on the guide rod in a sleeving mode and located in the middle of the sliding groove under the action of equidistant springs which are arranged in a central symmetry mode relative to the sliding piece. An arc-shaped rotating part is arranged on the first connecting part, a supporting arm is rotationally arranged on the arc-shaped rotating part, and the supporting arm and the sliding piece are assembled. The damping device is simple in structure, the first connecting part and the second connecting part are hinged, the guide rod can move the sliding part when the included angle between the first connecting part and the second connecting part changes, and therefore the equidistant springs on the two sides of the sliding part are stressed to provide damping force.

Description

Technical Field

[0001] The utility model relates to a crawler tiller, in particular to a rear suspension device and a crawler tiller. Background Art

[0002] A crawler tiller, also known as an all-terrain tiller, has a reference publication (announcement) number: CN203968611U, a publication (announcement) date: 2014-12-03, and a tiller, including a power system, a frame, a rear suspension device and a travel device, wherein the rear suspension device includes a connecting block and a rear suspension cylinder, the rear suspension cylinder is connected to the second mounting seat of the rear suspension cylinder on the frame, the first piston rod of the rear suspension cylinder is hinged to the connecting block, the other end of the connecting block is fixed with a transmission box, and the transmission box is hinged to the frame. The utility model adopts a hydraulic system to control the tillage depth, so that its operating parts have an overload protection function, prolongs the service life of the tiller, and facilitates the adjustment of the deep loosening and rotary tillage depth; the machine can simultaneously complete the deep loosening and rotary tillage operations when working, and other working devices such as a bulldozer can be replaced on the front suspension device, and other agricultural machinery such as a ridger can also be replaced on the rear suspension device; on the other hand, a crawler travel device is adopted to improve the passability and steering flexibility of the whole machine.

[0003] In the above-mentioned prior art, the crawler tiller is only used as a traction device, and other agricultural implements can be mounted through the rear suspension device, so as to achieve sowing, ridge opening, etc. The rear suspension device in the prior art is actually a piece of cast iron, and its function is to connect and cooperate. When encountering an extreme bending angle, the component will also break due to excessive stress. Utility Model Content

[0004] The purpose of the utility model is to provide a rear suspension device and a crawler tiller to solve the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A rear suspension device comprises a first connecting part and a second connecting part which are hingedly assembled at the ends, a slide groove is provided on the second connecting part, a guide rod which is slidably assembled with a sliding member is fixedly installed in the slide groove;

[0007] The sliding member is sleeved on the guide rod and is centrally arranged in the slide groove under the action of equidistant springs arranged symmetrically about the guide rod;

[0008] An arc-shaped rotating part is arranged on the first connecting part, a supporting arm is rotatably arranged on the arc-shaped rotating part, and the supporting arm is assembled with the sliding part.

[0009] Preferably, a tension spring is provided between the support arm and the second connecting portion.

[0010] Preferably, the cross section of the tension spring is rectangular.

[0011] Preferably, a first waist groove is formed at the end of the support arm, a second waist groove is formed on the sliding member, and a connecting rod member passing through the first waist groove and the second waist groove is also included.

[0012] Preferably, the second waist groove is parallel to the second connecting portion.

[0013] Preferably, the first waist groove is parallel to the support arm.

[0014] A crawler tiller comprises the rear suspension device described in the above scheme.

[0015] In the above technical scheme, a rear suspension device and a crawler tiller provided by the utility model have the following beneficial effects: a first connecting part and a second connecting part are hinged, and a guide rod is arranged on the adjacent surfaces between the two, so that when the force angle of the first connecting part and the second connecting part increases or decreases during traction, the guide rod drives the sliding part to move, so that the equidistant springs on both sides of the sliding part are respectively stressed to provide damping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0018] Figure 2 A schematic diagram of an explosion structure provided for an embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 1. First connecting part; 11. Arc-shaped rotating part; 12. Support arm; 121. First waist groove; 13. Mounting part; 2. Second connecting part; 21. Slide groove; 3. Guide rod; 4. Sliding part; 41. Second waist groove; 5. Tension spring; 6. Connecting rod; 7. Equidistant spring. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-2As shown, a rear suspension device and a crawler tiller include a first connecting portion 1 and a second connecting portion 2 which are hingedly assembled at the ends, a slide groove 21 is provided on the second connecting portion 2, and a guide rod 3 with a slide member 4 slidably assembled on the upper side is fixedly installed in the slide groove 21;

[0023] The sliding member 4 is sleeved on the guide rod 3 and is centrally arranged in the slide groove 21 under the action of the equidistant spring 7 which is arranged symmetrically about the guide rod 3.

[0024] An arc-shaped rotating portion 11 is disposed on the first connecting portion 1 , a supporting arm 12 is rotatably disposed on the arc-shaped rotating portion 11 , and the supporting arm 12 and the sliding member 4 are assembled.

[0025] Specifically, in the embodiment, a mounting portion 13 is provided at one end of the first connecting portion 1 connected to the second connecting portion 2, and the first connecting portion 13 can be installed on a crawler tiller, while the second connecting portion 2 is used for mounting and connecting with other agricultural implements.

[0026] Secondly, the above-mentioned components in the embodiment are all cast iron parts.

[0027] In the above technology, the first connecting part 1 and the second connecting part 2 are hinged, and a guide rod 3 is arranged on the adjacent surface between the two, so that when the force angle of the first connecting part 1 and the second connecting part 2 increases or decreases during the traction process, the guide rod 3 drives the sliding member 4 to move, so that the equidistant springs 7 on both sides of the sliding member 4 are respectively stressed, thereby providing damping force.

[0028] As an embodiment further provided by the present invention, a tension spring 5 is provided between the support arm 12 and the second connecting portion 2 , and the cross section of the tension spring 5 is rectangular.

[0029] Specifically, in the embodiment, when the force angles of the first connection part 1 and the second connection part 2 increase or decrease, the tension spring 5 pulls the support arm 12 and is subjected to force as the angle between the support arm 12 and the first connection part 1 changes, thereby cooperating with the equidistant spring 7 to form a second damping buffer system.

[0030] As another embodiment further provided by the utility model, a first waist groove 121 is formed at the end of the support arm 12 , a second waist groove 41 is formed on the sliding member 4 , and also includes a connecting rod 6 passing through the first waist groove 121 and the second waist groove 41 .

[0031] Combination Figure 2 It can be seen that the second waist groove 41 in the embodiment is parallel to the second connecting portion 2 , while the first waist groove 121 is parallel to the supporting arm 12 .

[0032] Specifically, in the embodiment, the first waist groove 121 and the second waist groove 41 are connected by the connecting rod 6, and the support arm 12 maintains an angle with the first connecting part 1 under the action of the tension spring 5, and the sliding member 4 is kept in the center under the action of the equidistant springs 7 on both sides. When the force angle between the first connecting part 1 and the second connecting part 2 increases or decreases, the support arm 12 moves, pulling the connecting rod 6 from one end of the second waist groove 41 to the other end, and after reaching the end, pulling the sliding member 4 to move, that is, the equidistant springs 7 on both sides are deformed under force, thereby forming an incremental damping.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rear suspension device, characterized in that: It comprises a first connecting part (1) and a second connecting part (2) which are hingedly assembled at the ends, the second connecting part (2) is provided with a slide groove (21), and a guide rod (3) which is slidably assembled with a sliding member (4) is fixedly installed in the slide groove (21); The sliding member (4) is sleeved on the guide rod (3) and is centrally arranged in the slide groove (21) under the action of an equidistant spring (7) arranged symmetrically about the guide rod (3); The first connecting portion (1) is provided with an arc-shaped rotating portion (11), a supporting arm (12) is rotatably provided on the arc-shaped rotating portion (11), and the supporting arm (12) and the sliding member (4) are assembled.

2. A rear suspension device according to claim 1, characterized in that: A tension spring (5) is provided between the support arm (12) and the second connecting portion (2).

3. A rear suspension device according to claim 2, characterized in that: The cross section of the tension spring (5) is rectangular.

4. A rear suspension device according to claim 1, characterized in that: The end of the support arm (12) is provided with a first waist groove (121), the sliding member (4) is provided with a second waist groove (41), and also includes a connecting rod (6) passing through the first waist groove (121) and the second waist groove (41).

5. A rear suspension device according to claim 4, characterized in that: The second waist groove (41) is parallel to the second connecting portion (2).

6. A rear suspension device according to claim 4, characterized in that: The first waist groove (121) is parallel to the support arm (12).

7. A crawler tiller, characterized in that: The rear suspension device comprises the rear suspension device according to any one of claims 1 to 6.

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