Plate spring suspension

Abstract

The utility model discloses a plate spring suspension which comprises a front axle and a frame longitudinal beam. The steel plate spring assembly at least comprises a steel plate spring, the middle portion of the steel plate spring is arranged on the front axle, and the two ends of the steel plate spring are connected to the frame longitudinal beams; the shock absorber assembly comprises a shock absorber and a shock absorber support, the first end of the shock absorber is hinged to the shock absorber support, the shock absorber support is installed on the frame longitudinal beam, a shock absorber spring eye is formed on the steel plate spring, and the second end of the shock absorber is hinged to the shock absorber spring eye. According to the plate spring suspension provided by the utility model, the damper spring eye is arranged on the steel plate spring, so that the damper can be directly hinged on the damper spring eye of the steel plate spring through the hinged shaft, the connection with the damper can be realized without fixing a mounting seat on the steel plate spring, and the mounting cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mining dump trucks, in particular to a leaf spring suspension. Background Art

[0002] The existing front suspension structures of mining dump trucks can be divided into two types: one is a suspension cylinder structure, which uses a gas spring for buffering and shock absorption, and cooperates with multiple connecting rods to bear longitudinal and lateral forces; the other is a leaf spring structure, which uses leaf springs and leaf spring supports installed on the frame to bear gravity, longitudinal force and lateral force.

[0003] In the prior art, leaf spring structures are widely used, and there are two main layout structures: one is that both ends of the leaf spring have ear structures, and the ear structures at both ends are connected to the leaf spring support, and the leaf spring support is fixed to the frame longitudinal beam. The other is that both ends of the leaf spring are slidably matched with the leaf spring support. Generally, in order to achieve the effect of buffering and reducing vibration under heavy load conditions and avoid hard collision between the frame longitudinal beam and the leaf spring, a shock absorber is usually set between the two.

[0004] One end of the shock absorber is hinged to the longitudinal beam of the frame, and the other end is hinged to the leaf spring. Both ends of the shock absorber are installed through a mounting seat, and the installation cost is high.

[0005] Therefore, how to reduce the installation cost of the shock absorber is a technical problem that technicians in this field currently need to solve. Utility Model Content

[0006] In view of this, an object of the present invention is to provide a leaf spring suspension to reduce the installation cost of the shock absorber.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A leaf spring suspension, comprising:

[0009] front axle and frame rails;

[0010] A leaf spring assembly, comprising at least a leaf spring, wherein the middle portion of the leaf spring is arranged on the front axle and the two ends are connected to the longitudinal beam of the frame;

[0011] The shock absorber assembly comprises a shock absorber and a shock absorber support, wherein the first end of the shock absorber is hinged to the shock absorber support, the shock absorber support is installed on the frame longitudinal beam, the leaf spring is formed with a shock absorber ear, and the second end of the shock absorber is hinged to the shock absorber ear.

[0012] Optionally, in the above leaf spring suspension, the hinge center of the first end of the shock absorber is perpendicular to the hinge center of the second end of the shock absorber.

[0013] Optionally, in the above leaf spring suspension, the leaf spring assembly further comprises a first leaf spring mounting seat and a second leaf spring mounting seat mounted on the frame longitudinal beam;

[0014] Both ends of the leaf spring are connected to the frame longitudinal beam through the first leaf spring mounting seat and the second leaf spring mounting seat respectively.

[0015] Optionally, in the leaf spring suspension, a leaf spring ear is formed at the first end of the leaf spring, and a limited bending portion is formed at the second end of the leaf spring;

[0016] The leaf spring ear is hinged to the first leaf spring mounting seat through a leaf spring hinge shaft, and the second leaf spring mounting seat has a guide slot. The second end of the leaf spring is slidably matched with the guide slot and is limited by the limiting bending portion.

[0017] Optionally, the above-mentioned leaf spring suspension also includes a steering cylinder assembly, which includes a steering cylinder and a steering cylinder support installed on the frame longitudinal beam, one end of the steering cylinder is hinged to the steering cylinder support, and the other end is hinged to the steering arm on the front axle.

[0018] Optionally, in the above-mentioned leaf spring suspension, the middle portion of the leaf spring is arranged on the front axle by means of a riding bolt.

[0019] Optionally, the leaf spring suspension further includes a buffer and vibration reduction assembly arranged on the frame longitudinal beam, the buffer and vibration reduction assembly includes a buffer mounting support and a buffer, the buffer is mounted on the buffer mounting support and is arranged facing the leaf spring.

[0020] Optionally, in the above leaf spring suspension, the buffer member mounting support comprises:

[0021] A buffer component mounting plate, the buffer component is mounted on the buffer component mounting plate;

[0022] A longitudinal beam mounting plate, comprising a longitudinal beam side mounting wall for affixing to the side surface of the longitudinal beam of the frame and a longitudinal beam bottom mounting wall for affixing to the bottom surface of the longitudinal beam of the frame, wherein the longitudinal beam side mounting wall is provided with a fastening hole for installing a fastener;

[0023] The reinforcing connecting plates are respectively connected to the buffer component mounting plate and the longitudinal beam mounting plate.

[0024] Optionally, in the above leaf spring suspension, the longitudinal beam side mounting wall and the longitudinal beam bottom mounting wall are perpendicular to each other; and / or,

[0025] The longitudinal beam side mounting wall and the longitudinal beam bottom mounting wall are transitionally connected via a transition plate, and the transition plate is an arc-shaped plate; and / or,

[0026] The buffer component mounting plate is parallel to and spaced from the longitudinal beam bottom mounting wall; and / or,

[0027] The reinforcing connecting plate has a connecting fitting surface that fits on the longitudinal beam side mounting wall and the longitudinal beam bottom mounting wall, and the connecting fitting surface fits on the side of the longitudinal beam side mounting wall and the longitudinal beam bottom mounting wall facing away from the frame longitudinal beam; and / or,

[0028] The width of the reinforcing connecting plate gradually increases from a direction away from the buffer component mounting plate to a direction close to the buffer component mounting plate.

[0029] Optionally, in the above leaf spring suspension, there are two reinforcing connecting plates, which are respectively connected to the two side edges of the longitudinal beam mounting plate;

[0030] Support ribs are arranged between the two reinforcing connecting plates, and the support ribs are respectively connected to the longitudinal beam mounting plate and the buffer component mounting plate.

[0031] The leaf spring suspension provided by the utility model has a shock absorber assembly arranged between the frame longitudinal beam and the leaf spring assembly, which effectively reduces the longitudinal bumps during vehicle operation and improves the comfort in the cab above the front suspension. In order to facilitate the installation of the shock absorber assembly, the utility model arranges a shock absorber ear on the leaf spring so that the shock absorber can be directly hinged to the shock absorber ear of the leaf spring through a hinge shaft, and the connection with the shock absorber can be achieved without fixing a mounting seat on the leaf spring, thereby reducing the installation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the structure of the leaf spring suspension disclosed in the embodiment of the utility model at a certain angle;

[0034] Figure 2 It is a structural schematic diagram of the leaf spring suspension disclosed in the embodiment of the utility model at another angle;

[0035] Figure 3 It is a front view of the leaf spring suspension disclosed in the embodiment of the utility model;

[0036] Figure 4 A cross-sectional view of a leaf spring suspension disclosed in an embodiment of the utility model at a leaf spring assembly;

[0037] Figure 5 A top view of a leaf spring suspension disclosed in an embodiment of the utility model;

[0038] Figure 6 It is a schematic diagram of the structure in which the buffer vibration reduction assembly disclosed in the embodiment of the utility model is installed on the longitudinal beam of the frame;

[0039] Figure 7 A side view of the buffer vibration reduction assembly disclosed in the embodiment of the utility model installed on the longitudinal beam of the frame;

[0040] Figure 8 It is a structural schematic diagram of a buffer component mounting support at an angle disclosed in an embodiment of the utility model;

[0041] Fig. 9 A top view of the buffer component mounting support at another angle disclosed in an embodiment of the utility model;

[0042] Fig.10 It is a front view of the buffer component mounting support disclosed in the embodiment of the utility model;

[0043] Fig.11 It is a side view of the buffer component mounting support disclosed in the embodiment of the utility model.

[0044] The meanings of the reference numerals in the figures are as follows:

[0045] 100-buffer vibration reduction assembly; 110-buffer mounting support; 111-longitudinal beam mounting plate; 1111-fastening hole; 1112-longitudinal beam side mounting wall; 1113-longitudinal beam bottom mounting wall; 1114-transition plate; 112-reinforced connecting plate; 113-buffer mounting plate; 114-support rib; 120-buffer;

[0046] 200-frame longitudinal beam;

[0047] 300-leaf spring assembly; 310-leaf spring; 311-leaf spring ear; 312-limiting bending portion; 313-shock absorber ear; 320-first leaf spring mounting seat; 330-second leaf spring mounting seat; 340-riding bolt;

[0048] 400-front axle;

[0049] 500- shock absorber assembly; 510- shock absorber; 520- shock absorber support;

[0050] 600-steering cylinder assembly; 610-steering cylinder; 620-steering cylinder support. DETAILED DESCRIPTION

[0051] The core of the utility model is to provide a leaf spring suspension to reduce the installation cost of the shock absorber.

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] like Figure 1-Figure 5 As shown, the utility model embodiment discloses a leaf spring suspension, which can be used for a mining dump truck. In this embodiment, the leaf spring suspension includes a front axle 400, a frame longitudinal beam 200, a leaf spring assembly 300 and a shock absorber assembly 500.

[0054] The leaf spring assembly 300 at least includes a leaf spring 310, the middle portion of which is disposed on the front axle 400, and both ends of which are connected to the frame longitudinal beam 200. Under the support of the leaf spring 310, the frame longitudinal beam 200 is erected above the front axle 400. When the vehicle is on a bumpy road, the leaf spring 310 can filter out some vibrations to ensure comfort when driving on a bumpy road.

[0055] In order to further improve the vibration reduction effect, the leaf spring suspension can also be provided with a shock absorber assembly 500, which includes a shock absorber 510 and a shock absorber support 520. The first end of the shock absorber 510 is hinged to the shock absorber support 520, and the shock absorber support 520 is installed on the frame longitudinal beam 200. Because the shock absorber 510 bears the impact of the vehicle, the shock absorber support 520 and the connection between the shock absorber support 520 and the shock absorber 510 are prone to breakage, deformation and other problems. In order to facilitate the replacement of the shock absorber support 520 after deformation or breakage, in this embodiment, the shock absorber support 520 can be installed on the frame longitudinal beam 200 by fasteners.

[0056] like Figure 4 As shown, the leaf spring 310 is formed with a shock absorber ear 313, and the second end of the shock absorber 510 is hinged to the shock absorber ear 313. Specifically, the end of the bottom leaf spring of the leaf spring 310 forms the shock absorber ear 313 by winding, so that it can be hinged to the second end of the shock absorber 510 by passing through a hinge shaft. In this embodiment, both ends of the shock absorber 510 are connected by hinges, so that the upper and lower ends of the shock absorber 510 can rotate freely around the corresponding hinge shafts, so when the front axle 400 and the frame longitudinal beam 200 produce relative displacement in the horizontal direction, the shock absorber 510 can swing along the corresponding hinge shaft to adapt.

[0057] The leaf spring suspension disclosed in the embodiment of the utility model effectively reduces the longitudinal bumps during vehicle operation and improves the comfort of the cab above the front suspension by adding the shock absorber assembly 500. In addition, by providing the shock absorber ear 313 on the leaf spring 310, the shock absorber 510 can be directly hinged to the shock absorber ear 313 of the leaf spring 310 through the hinge shaft, and the connection with the shock absorber 510 can be achieved without fixing the mounting seat on the leaf spring 310, thereby reducing the installation cost.

[0058] In this embodiment, the hinge center of the first end of the shock absorber 510 is perpendicular to the hinge center of the second end of the shock absorber 510. For example, the axial direction of the hinge shaft of the first end of the shock absorber 510 is parallel to the extension direction of the frame longitudinal beam 200, and the axial direction of the hinge shaft of the second end of the shock absorber 510 is perpendicular to the extension direction of the frame longitudinal beam 200. In this way, when the vehicle body is displaced in the left-right direction relative to the front axle 400, the hinge of the first end of the shock absorber 510 can provide a degree of freedom; when the vehicle body is displaced in the front-back direction relative to the front axle 400, the hinge of the second end of the shock absorber 510 can provide a degree of freedom.

[0059] In a specific embodiment of the utility model, the leaf spring assembly 300 further includes a first leaf spring mounting seat 320 and a second leaf spring mounting seat 330 mounted on the frame longitudinal beam 200, and both ends of the leaf spring 310 are connected to the frame longitudinal beam 200 through the first leaf spring mounting seat 320 and the second leaf spring mounting seat 330. The first leaf spring mounting seat 320 and the second leaf spring mounting seat 330 can be fixed to the frame longitudinal beam 200 by fasteners, so that the first leaf spring mounting seat 320 and the second leaf spring mounting seat 330 can be replaced after being damaged.

[0060] like Figure 4 As shown, further, a leaf spring ear 311 is formed at the first end of the leaf spring 310, and a limited bending portion 312 is formed at the second end of the leaf spring 310. The leaf spring ear 311 is hinged to the first leaf spring mounting seat 320 through a leaf spring hinge shaft, and the second leaf spring mounting seat 330 has a guide slot, and the second end of the leaf spring 310 is slidably matched with the guide slot and is limited by the limited bending portion 312. It should be noted that the limited bending portion 312 is located on the outside of the guide slot, and when the leaf spring 310 is deformed, the second end of the leaf spring 310 slides relative to the guide slot, and the first end of the leaf spring 310 rotates around the leaf spring hinge shaft so that the leaf spring 310 can be deformed freely, and the limited bending portion 312 can prevent the second end of the leaf spring 310 from being separated from the guide slot.

[0061] In a specific embodiment of the utility model, the leaf spring suspension may further include a steering cylinder assembly 600, which includes a steering cylinder 610 and a steering cylinder support 620 mounted on the frame longitudinal beam 200. One end of the steering cylinder 610 is hinged to the steering cylinder support 620, and the other end is hinged to the steering arm on the front axle 400. There are two steering cylinder assemblies 600 arranged symmetrically, one on each side of the front axle 400, to assist the vehicle in steering.

[0062] Furthermore, the middle part of the leaf spring 310 is arranged on the front axle 400 through the riding bolt 340. An auxiliary arc block can be arranged on the top of the leaf spring 310, and the top arc section of the riding bolt 340 is pressed on the auxiliary arc block, so that the preload force acts on each leaf spring leaf of the leaf spring 310 more evenly.

[0063] like Figure 6 and Figure 7 As shown, in a specific embodiment of the utility model, the leaf spring suspension may further include a buffer vibration reduction assembly 100 disposed on the frame longitudinal beam 200, the buffer vibration reduction assembly 100 includes a buffer component mounting support 110 and a buffer component 120, the buffer component 120 is mounted on the buffer component mounting support 110, and is disposed facing the leaf spring 310. It should be noted that only one buffer vibration reduction assembly 100 may be disposed corresponding to one leaf spring 310 to reduce costs.

[0064] Further, please combine Figure 8-Figure 11 As shown, the buffer component mounting bracket 110 is used to mount the buffer component 120 , and provides a mounting base and support for the buffer component 120 , so that the buffer component 120 can be mounted on the frame rail 200 through the buffer component mounting bracket 110 .

[0065] The buffer mounting support 110 disclosed in the embodiment of the utility model includes a buffer mounting plate 113, a longitudinal beam mounting plate 111 and a reinforcing connecting plate 112. The buffer mounting plate 113 is used to mount the buffer 120. Specifically, the buffer mounting plate 113 is a plate-like structure having a first side surface and a second side surface relative to each other. The buffer 120 is mounted on the first side surface of the buffer mounting plate 113. In normal working state, the first side surface of the buffer mounting plate 113 is the lower surface, and the second side surface of the buffer mounting plate 113 is the upper surface. The buffer 120 can be a buffer rubber pad, which can be fixed on the buffer mounting plate 113 by fasteners, so that the buffer 120 can be replaced. The long-term contact between the leaf spring and the buffer 120 can easily damage the buffer 120 and lose the buffering effect. Since the buffer 120 is installed by fasteners, it is easier to disassemble and convenient to replace the buffer 120.

[0066] The longitudinal beam mounting plate 111 has a longitudinal beam side mounting wall 1112 for being attached to the side of the frame longitudinal beam 200 and a longitudinal beam bottom mounting wall 1113 for being attached to the bottom of the frame longitudinal beam 200. It can be seen that in this embodiment, the longitudinal beam mounting plate 111 is different from the longitudinal beam mounting plate in the prior art, and it is attached to at least the side and bottom of the frame longitudinal beam 200.

[0067] The longitudinal beam side mounting wall 1112 is provided with fastening holes 1111 for installing fasteners. The number, position and arrangement of the fastening holes 1111 can be designed by those skilled in the art according to requirements so as to meet the requirements of installation and bear impact loads.

[0068] The reinforcing connecting plate 112 is connected to the buffer mounting plate 113 and the longitudinal beam mounting plate 111 respectively, so as to realize the connection between the buffer mounting plate 113 and the longitudinal beam mounting plate 111. It should be noted that the reinforcing connecting plate 112 is connected to the second side surface of the buffer mounting plate 113.

[0069] The buffer component mounting bracket 110 disclosed in the embodiment of the utility model, after being mounted to the frame longitudinal beam 200, the side of the longitudinal beam mounting plate 111 (i.e., the longitudinal beam side mounting wall 1112) is connected to the side of the frame longitudinal beam 200 through the fastener passing through the fastening hole 1111, and the bottom of the longitudinal beam mounting plate 111 (i.e., the longitudinal beam bottom mounting wall 1113) contacts the bottom of the frame longitudinal beam 200. When the vehicle bounces up and down and the leaf spring contacts the buffer component, the impact force is buffered by the buffer component and then transmitted to the side and bottom of the frame longitudinal beam 200 through the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113. On the basis of the prior art, the utility model adds the bottom support of the frame longitudinal beam 200. Compared with the side support of the frame longitudinal beam 200 alone, the force is more reasonable, the reliability of the buffer component mounting bracket 110 is improved, and the risk of deformation or tearing is reduced.

[0070] In this embodiment, the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 are connected as an integrated structure, and the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 are perpendicular to each other. The longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 are connected as an integrated structure, which can be directly bent into a plate by a bending process. Figure 6 The shape shown can also be connected by two plates to form a vertical longitudinal beam side mounting wall 1112 and a longitudinal beam bottom mounting wall 1113, wherein the connection method is not limited to welding, fastener connection, etc.

[0071] In order to reduce the stress concentration generated at the connection part between the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113, in this embodiment, the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 are transitionally connected through a transition plate 1114, and the transition plate 1114 is an arc-shaped plate. That is, in this embodiment, the longitudinal beam side mounting wall 1112 gradually transitions to the longitudinal beam bottom mounting wall 1113 through the arc-shaped transition plate 1114, so as to avoid the formation of a sharp angle between the two, and to avoid the fracture at the sharp angle when subjected to a large impact.

[0072] like Figure 8 As shown, for the convenience of processing, the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 can both be rectangular. For the convenience of understanding, the dimension along the extension direction of the frame longitudinal beam 200 is defined as the extension direction dimension, and the dimension in the other direction (i.e., the direction in which the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 are perpendicular to the extension direction of the frame longitudinal beam 200) is defined as the extension direction dimension. That is, the extension direction of the longitudinal beam side mounting wall 1112 can be understood as the direction extending outward in the vertical direction; the extension direction of the longitudinal beam bottom mounting wall 1113 can be understood as the direction extending outward in the horizontal direction.

[0073] The extension direction dimension of the longitudinal beam side mounting wall 1112 is equal to the extension direction dimension of the longitudinal beam bottom mounting wall 1113 , that is, the longitudinal beam mounting plate 111 can be formed by bending a rectangular plate to form the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 .

[0074] The extension direction dimension of the longitudinal beam side mounting wall 1112 is greater than the extension direction dimension of the longitudinal beam bottom mounting wall 1113, that is, when bending, a larger area is reserved for the longitudinal beam side mounting wall 1112. The longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 are both rectangular plates, and without considering the thickness dimension, they have two dimensions, such as the width and length of the plate. The extension direction dimension of the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 may be a width dimension or a length dimension.

[0075] like Figure 8 As shown, the extension direction of the longitudinal beam side mounting wall 1112 is the length direction, and its extension direction is the width direction; correspondingly, the extension direction of the longitudinal beam bottom mounting wall 1113 is the length direction, and its extension direction is also the width direction. It should be noted that if the dimension of the longitudinal beam side mounting wall 1112 along the extension direction is greater than the dimension along the extension direction, the extension direction of the longitudinal beam side mounting wall 1112 is the width direction, and its extension direction is the length direction.

[0076] In this embodiment, since the longitudinal beam side mounting wall 1112 also takes into account the fastening function with the frame longitudinal beam 200, the dimension of the longitudinal beam side mounting wall 1112 in the extension direction needs to be designed to be larger to facilitate the arrangement of multiple fastening points; and the longitudinal beam bottom mounting wall 1113 only needs to provide supporting force, as long as the force transmission can be achieved, its dimension in the extension direction does not need to be designed to be larger.

[0077] like Fig.11 As shown, in a specific embodiment of the utility model, the buffer component mounting plate 113 is parallel to the longitudinal beam bottom mounting wall 1113 and is arranged at intervals. The distance between the buffer component mounting plate 113 and the longitudinal beam bottom mounting wall 1113 is controlled by reinforcing the connecting plate 112. Since the frame longitudinal beam 200 and the leaf spring 310 are staggered in the vertical direction, the buffer component mounting plate 113 and the longitudinal beam mounting plate 111 are designed as two parts, and the connection between the two is achieved by reinforcing the connecting plate 112, so that the buffer component mounting plate 113 can have a larger area to facilitate the arrangement of the buffer 120, while the longitudinal beam bottom mounting wall 1113 only needs to transmit the impact force and does not need to be designed with a larger area. In addition, the buffer component mounting plate 113 is separated from the longitudinal beam bottom mounting wall 1113 by a distance, so that the reinforcing connecting plate 112 can have a larger contact area with the buffer component mounting plate 113 and the longitudinal beam bottom mounting wall 1113, respectively, so as to improve the reliability of the connection and also facilitate the transmission of force.

[0078] The reinforcing connecting plate 112 has a connecting and fitting surface that fits on the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113, and the connecting and fitting surface fits on the side of the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113 that are not facing the frame longitudinal beam 200. That is, in this embodiment, the surface of the reinforcing connecting plate 112 facing the longitudinal beam mounting plate 111 matches the shape of the longitudinal beam mounting plate 111, so that the connecting and fitting surface can fit on the longitudinal beam side mounting wall 1112 and the longitudinal beam bottom mounting wall 1113. In this way, the contact area between the reinforcing connecting plate 112 and the longitudinal beam mounting plate 111 can be increased, and the stability of the connection can be improved.

[0079] In this embodiment, the width of the reinforcing connecting plate 112 gradually increases from away from the buffer mounting plate 113 to close to the buffer mounting plate 113. Since the buffer mounting plate 113 is the main force-bearing part, the width of the reinforcing connecting plate 112 facing the buffer mounting plate 113 is larger, and other parts do not need such a large width to reduce the overall weight.

[0080] like Fig. 9As shown, there are two reinforcing connecting plates 112, and they are respectively connected to the two side edges of the longitudinal beam mounting plate 111. A supporting rib 114 is provided between the two reinforcing connecting plates 112, and the supporting rib 114 is respectively connected to the longitudinal beam mounting plate 111 and the buffer component mounting plate 113. The supporting rib 114 may or may not be provided, and the volume of the supporting rib 114 is smaller than the volume of the reinforcing connecting plate 112. The number of the supporting rib 114 can be adjusted according to demand, and may be provided with one, multiple, or no supporting rib 114.

[0081] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0082] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0083] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0084] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A leaf spring suspension, characterized in that: include: A front axle (400) and a frame rail (200); A leaf spring assembly (300) at least comprises a leaf spring (310), wherein the middle portion of the leaf spring (310) is arranged on the front axle (400) and both ends are connected to the frame longitudinal beam (200); A shock absorber assembly (500) comprises a shock absorber (510) and a shock absorber support (520), wherein a first end of the shock absorber (510) is hinged to the shock absorber support (520), the shock absorber support (520) is mounted on the frame longitudinal beam (200), the leaf spring (310) is formed with a shock absorber coil ear (313), and a second end of the shock absorber (510) is hinged to the shock absorber coil ear (313).

2. The leaf spring suspension according to claim 1, characterized in that: The hinge center of the first end of the shock absorber (510) is perpendicular to the hinge center of the second end of the shock absorber (510).

3. The leaf spring suspension according to claim 1, characterized in that: The leaf spring assembly (300) further comprises a first leaf spring mounting seat (320) and a second leaf spring mounting seat (330) mounted on the frame longitudinal beam (200); The two ends of the leaf spring (310) are connected to the frame longitudinal beam (200) through the first leaf spring mounting seat (320) and the second leaf spring mounting seat (330) respectively.

4. The leaf spring suspension according to claim 3, characterized in that: The first end of the leaf spring (310) is formed with a leaf spring ear (311), and the second end of the leaf spring (310) is formed with a limited bending portion (312); The leaf spring ear (311) is hinged to the first leaf spring mounting seat (320) via a leaf spring hinge shaft, and the second leaf spring mounting seat (330) has a guide slot, and the second end of the leaf spring (310) is slidably matched with the guide slot and is limited by the limiting bending portion (312).

5. The leaf spring suspension according to claim 1, characterized in that: The vehicle also includes a steering cylinder assembly (600), wherein the steering cylinder assembly (600) includes a steering cylinder (610) and a steering cylinder support (620) mounted on the frame longitudinal beam (200), wherein one end of the steering cylinder (610) is hinged to the steering cylinder support (620), and the other end is hinged to the steering arm on the front axle (400).

6. The leaf spring suspension according to claim 1, characterized in that: The middle portion of the leaf spring (310) is arranged on the front axle (400) via a riding bolt (340).

7. The leaf spring suspension according to any one of claims 1 to 6, characterized in that: The invention also comprises a buffer vibration reduction assembly (100) arranged on the frame longitudinal beam (200), wherein the buffer vibration reduction assembly (100) comprises a buffer component mounting support (110) and a buffer component (120), wherein the buffer component (120) is mounted on the buffer component mounting support (110) and arranged facing the leaf spring (310).

8. The leaf spring suspension according to claim 7, characterized in that: The buffer component mounting support (110) comprises: A buffer component mounting plate (113), wherein the buffer component (120) is mounted on the buffer component mounting plate (113); A longitudinal beam mounting plate (111) having a longitudinal beam side mounting wall (1112) for being attached to the side of the frame longitudinal beam (200) and a longitudinal beam bottom mounting wall (1113) for being attached to the bottom surface of the frame longitudinal beam (200), wherein the longitudinal beam side mounting wall (1112) is provided with a fastening hole (1111) for installing a fastener; The reinforcing connecting plate (112) is respectively connected to the buffer component mounting plate (113) and the longitudinal beam mounting plate (111).

9. The leaf spring suspension according to claim 8, characterized in that: The longitudinal beam side mounting wall (1112) and the longitudinal beam bottom mounting wall (1113) are perpendicular to each other; and / or, The longitudinal beam side mounting wall (1112) and the longitudinal beam bottom mounting wall (1113) are transitionally connected via a transition plate (1114), and the transition plate (1114) is an arc-shaped plate; and / or, The buffer component mounting plate (113) is arranged parallel to and spaced apart from the longitudinal beam bottom mounting wall (1113); and / or, The reinforcing connecting plate (112) has a connecting fitting surface that fits on the longitudinal beam side mounting wall (1112) and the longitudinal beam bottom mounting wall (1113), and the connecting fitting surface fits on the side of the longitudinal beam side mounting wall (1112) and the longitudinal beam bottom mounting wall (1113) that faces away from the frame longitudinal beam (200); and / or, The width of the reinforcing connecting plate (112) gradually increases in a direction from away from the buffer component mounting plate (113) to closer to the buffer component mounting plate (113).

10. The leaf spring suspension according to claim 8, characterized in that There are two reinforcing connecting plates (112), which are respectively connected to the two side edges of the longitudinal beam mounting plate (111); A support rib (114) is provided between the two reinforcing connection plates (112), and the support rib (114) is respectively connected to the longitudinal beam mounting plate (111) and the buffer component mounting plate (113).

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