Plate spring pin structure and commercial vehicle chassis suspension

Abstract

The utility model discloses a plate spring pin structure and a commercial vehicle chassis suspension, which comprises a plate spring pin used for connecting two oppositely arranged hoop structures of a plate spring support, a plate spring is arranged on the outer side between the two hoop structures, and a plate spring bushing is arranged between the plate spring and the plate spring pin; an oil injection hole in the axial direction is formed in one end of the plate spring pin, at least two opposite oil outlet holes and at least two oil grooves are formed in the contact position of the plate spring pin and the plate spring bush, and the at least two oil grooves are located in the outer surface of the plate spring pin. The at least two oil outlet holes are communicated with the at least two oil injection holes in a one-to-one mode, and the two oil grooves avoid each other, so that lubricating grease injected from the opening ends of the oil injection holes enters the oil grooves through the oil outlet holes, and the part between the plate spring pin and the plate spring bush is lubricated. The oil outlet and the oil groove are additionally arranged on the basis of a conventional plate spring pin, no additional parts are needed, it is guaranteed that the installation mode is consistent with that of the conventional plate spring pin, and therefore the lubricating effect and universality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to commercial vehicle equipment technical field, specifically speaking, it is a leaf spring pin structure and commercial vehicle chassis suspension. BACKGROUND

[0002] On commercial vehicle chassis suspension, in order to connect steel plate spring and leaf spring support together, metal cylindrical pin shaft is generally used.Meanwhile, in order to solve the friction noise between leaf spring pin and leaf spring, it is necessary to inject lubricating grease between leaf spring pin and leaf spring.Lubricating grease is added from the oil injection hole of leaf spring pin, enters between leaf spring pin and leaf spring from the oil outlet hole and is stored in the oil groove.

[0003] The existing leaf spring pin generally has only one oil outlet hole.The road condition used by commercial vehicle is poor, and dust will mix into the lubricating grease injected into leaf spring pin.Drivers seldom actively inject lubricating grease, and the lubricating grease mixed with dust has already solidified and blocked the oil outlet hole when the next injection is carried out, leading to difficulty in re-injection.

[0004] Moreover, in the use process, lubricating grease will slowly flow out from the gap due to the extrusion between leaf spring pin and leaf spring, leading to hard friction between leaf spring pin and leaf spring and producing noise.The conventional leaf spring pin has no oil groove, and the oil storage capacity is weak, so the lubricating grease can be maintained for a short time after injection. UTILITY MODEL CONTENT

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a leaf spring pin structure and commercial vehicle chassis suspension, which provides a new type of leaf spring pin under the premise that the existing installation mode and technical conditions are not changed, and solves the problems of difficult lubricating grease injection and weak lubricating effect by increasing the oil outlet hole and oil groove.

[0006] The utility model solves the above problems by the following technical scheme:

[0007] A leaf spring pin structure comprises:

[0008] The leaf spring pin is used for connecting two oppositely arranged hoop structures of a leaf spring support, and a leaf spring is arranged outside between the two hoop structures, and a leaf spring bushing is arranged between the leaf spring and the leaf spring pin.

[0009] An oil injection hole in the axial direction is formed at one end of the leaf spring pin, at least two opposite oil outlet holes and at least two oil grooves are formed at the contact position between the leaf spring pin and the leaf spring bushing, and the at least two oil grooves are located on the outer surface of the leaf spring pin; the at least two oil outlet holes are in one-to-one communication with the at least two oil injection holes, and the two oil grooves are mutually avoided, so that the lubricating grease injected from the opening end of the oil injection hole enters the oil groove through the oil outlet hole, and the leaf spring pin and the leaf spring bushing are lubricated.

[0010] As a further improvement, the oil outlet hole is perpendicular to the oil injection hole.

[0011] As a further improvement, the oil injection hole is provided with a grease nipple at the opening end thereof.

[0012] As a further improvement, the oil groove is arranged in an arc shape and extends from the oil outlet hole to both ends of the leaf spring pin.

[0013] As a further improvement, the clamp structure of the leaf spring support is connected by a clamp bolt, and a groove is formed on the leaf spring pin to avoid the clamp bolt, so that the leaf spring pin is positioned and installed in the leaf spring support by cooperation of the clamp bolt and the groove.

[0014] Meanwhile, the above problems are solved by the following technical solutions:

[0015] A commercial vehicle chassis suspension comprises a leaf spring pin structure as described above.

[0016] As a further improvement, the leaf spring support is further provided with a bolt hole connected with the frame to position the leaf spring support on the frame by cooperation of a bolt.

[0017] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0018] (1) The present application increases the oil outlet hole and the oil groove on the basis of the conventional leaf spring pin, and the oil groove is modified, without adding new parts, considering the universality, ensuring the installation mode consistent with the conventional leaf spring pin, thereby improving the adaptability.

[0019] (2) The present application solves the problem of grease injection, improves the lubrication effect, and reduces the abnormal noise. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is an exploded schematic view of the leaf spring pin structure of the present application;

[0021] Figure 2 is a structural schematic view of the leaf spring pin of the present application;

[0022] Figure 3 is another structural schematic view of the leaf spring pin of the present application;

[0023] Figure 4 is a position schematic view of the oil injection hole and the oil outlet hole of the present application;

[0024] Figure 5 is a structural schematic view of a commercial vehicle chassis suspension of the present application;

[0025] Figure 6The utility model discloses a kind of commercial vehicle chassis suspension's decomposition schematic view.

[0026] Reference signs:

[0027] 1, leaf spring; 2, leaf spring bush; 3, leaf spring pin; 4, leaf spring support; 41, hoop structure; 42, hoop bolt; 43, matching bolt; 5, groove; 6, oil groove; 7, oil injection hole; 8, oil outlet hole; 9, frame; 10, grease nipple. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] Embodiment 1;

[0030] Combined with the accompanying drawings Figures 1-4 As shown in the drawings, a leaf spring pin structure comprises:

[0031] The leaf spring pin is used for connecting two oppositely arranged hoop structures 41 of the leaf spring support 4, and a leaf spring 1 is arranged outside between the two hoop structures 41, and as preferred, a leaf spring bush 2 is arranged between the leaf spring 1 and the leaf spring pin 3;

[0032] One end of the leaf spring pin 3 is formed with an oil injection hole 7 along the axial direction, and at least two opposite oil outlet holes 8 and at least two oil grooves 6 are formed at the contact position of the leaf spring pin 3 and the leaf spring bush 2, and the at least two oil grooves 6 are located on the outer surface of the leaf spring pin 3; the at least two oil outlet holes 8 and the at least two oil injection holes 7 are in one-to-one communication, and the two oil grooves 6 are mutually avoided, so that the lubricating grease injected from the opening end of the oil injection hole 7 enters the oil groove 6 through the oil outlet hole 8, to lubricate between the leaf spring pin 3 and the leaf spring bush 2.

[0033] Preferably, one end of the leaf spring pin 3 is formed with an oil injection hole 7 along the axial direction, and two oil outlet holes 8 and two oil grooves 6 are formed at the contact position of the leaf spring pin 3 and the leaf spring bush 2, and the two oil outlet holes 8 are respectively in communication with the oil injection hole 7; one oil outlet hole is in communication with one oil groove, and the other oil outlet hole is in communication with the other oil groove, and the two oil grooves 6 are not communicated and are arranged to avoid each other.

[0034] The two oil outlet holes 8 are oppositely arranged and perpendicular to the oil injection hole 7.

[0035] The two oil grooves 6 are located on the outer surface of the leaf spring pin 3, so that the lubricating grease injected from the opening end of the oil injection hole 7 enters the oil groove 6 through the oil outlet hole 8, to lubricate between the leaf spring pin 3 and the leaf spring bush 2.

[0036] The opening end of the oil injection hole 7 is provided with a grease nipple 10 for sealing the oil injection hole 7 after the grease is injected.

[0037] In an alternative embodiment, the two oil grooves 6 are arranged in an arc shape along the outer surface of the leaf spring pin 3, and extend from the oil outlet hole 8 to both ends of the leaf spring pin 3.

[0038] Further, the clamp structure 41 of the leaf spring support 4 is connected by a clamp bolt 42, and a groove 5 is formed on the leaf spring pin 3 to avoid the clamp bolt 42, so that the leaf spring pin 3 is positioned and installed in the leaf spring support 4 by cooperating the clamp bolt 42 with the groove 5.

[0039] The leaf spring pin structure is provided with two oil outlet holes 8 which are connected with the oil injection hole 7, and each oil outlet hole 8 is connected with an oil groove 6. After the grease is injected from the oil injection hole 7, it enters the oil groove 6 from the oil outlet hole and is stored in the oil groove 6. When the vehicle is running, the leaf spring bushing 2 rotates relative to the leaf spring pin, and the two are lubricated by the grease in the oil groove, thereby achieving the purpose of reducing friction noise.

[0040] The leaf spring pin structure can be easily dredged by providing two opposite and intersecting oil outlet holes 8, and the two oil outlet holes 8 can ensure to solve the technical problem that the market leaf spring pin has only one oil outlet hole, and it is difficult to add grease again after the grease is dry for a long time without adding. By increasing the oil outlet hole and the oil groove, and improving the arrangement of the oil groove, the problems of poor injection and lubrication effect can be solved.

[0041] Embodiment 2;

[0042] In combination with the accompanying Figures 5-6 As shown in the drawings, a commercial vehicle chassis suspension includes a leaf spring pin 3, a leaf spring 1, a leaf spring bushing 2, and a leaf spring support 4 as described above. The leaf spring pin 3 connects two oppositely arranged clamp structures 41 of the leaf spring support 4, and the outer side between the two clamp structures 41 is provided with the leaf spring 1. The leaf spring 1 is provided with the leaf spring bushing 2 between the leaf spring pin 3. One end of the leaf spring pin 3 is formed with an oil injection hole 7 along the axial direction. The leaf spring pin 3 is formed with two oil outlet holes 8 and two oil grooves 6 at the contact position with the leaf spring bushing 2. The two oil outlet holes 8 are respectively connected with the oil injection hole 7. One oil outlet hole is connected with one oil groove, and the other oil outlet hole is connected with the other oil groove. The two oil grooves 6 are not connected and are arranged to avoid each other.

[0043] The upper part of the leaf spring support 4 is provided with a bolt hole connected with the vehicle frame 9, so that the leaf spring support 4 is arranged outside the vehicle frame 9 by cooperating with the bolt 43.

[0044] Although the present application has been described with reference to the explanatory embodiments thereof, the above-described embodiments are merely the preferred embodiments of the present application, and the embodiments of the present application are not limited to the above-described embodiments, and it should be understood that many other modifications and embodiments can be designed by those skilled in the art, and these modifications and embodiments will fall within the scope and spirit of the principles disclosed in the present application.

Claims

1. A leaf spring pin structure, characterized by, The plate spring pin is used to connect two oppositely arranged clamping structures of the plate spring support, and an outer side between the two clamping structures is provided with a plate spring, and a plate spring bushing is arranged between the plate spring and the plate spring pin. An oil injection hole in an axial direction is formed at one end of the plate spring pin, at least two opposite oil outlet holes and at least two oil grooves are formed at a position where the plate spring pin is in contact with the plate spring bushing, and the at least two oil grooves are located on an outer surface of the plate spring pin; the at least two oil outlet holes are in one-to-one communication with the at least two oil injection holes, and the two oil grooves are mutually avoided, so that the lubricating grease injected from the opening end of the oil injection hole enters the oil groove through the oil outlet hole, thereby lubricating the space between the plate spring pin and the plate spring bushing. The oil outlet hole is perpendicular to the oil injection hole.

2. The leaf spring pin structure according to claim 1, wherein A grease nipple is arranged at the opening end of the oil injection hole to seal the oil injection hole.

3. The leaf spring pin structure of claim 1, wherein The oil groove is arranged in an arc shape and extends from the oil outlet hole to both ends of the plate spring pin.

4. The leaf spring pin structure of claim 1, wherein The clamping structures of the plate spring support are connected by clamping bolts, and a groove is formed on the plate spring pin to avoid the clamping bolts, so that the plate spring pin is limited and installed in the plate spring support by cooperation of the clamping bolts and the groove.

5. The leaf spring pin structure according to any one of claims 1 to 4, characterized in that The plate spring pin structure according to any one of claims 1-5.

6. A commercial vehicle chassis suspension characterized by, Further comprising: A frame is arranged on the upper part of the plate spring support, and a bolt hole is arranged on the frame to connect the plate spring support to the frame by cooperating bolts, so that the plate spring support is arranged on the frame by the cooperating bolts.

7. The commercial vehicle chassis suspension of claim 6, wherein, ​ ​

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