Mounting flange for polyurethane buffer and polyurethane buffer

Abstract

The mounting flange comprises a flange plate and a fastening plate, the fastening plate is in a bowl shape, the bowl opening position of the fastening plate is fixedly connected with the middle of the flange plate, a plurality of through holes are formed in the fastening plate at intervals, mounting holes are formed in the flange plate, and the mounting holes are communicated with the flange plate. The mounting holes are formed in the circumferential direction of the flange plate at intervals, and the position, corresponding to the bowl opening of the fastening plate, of the flange plate is of a completely-open structure or of a plate type structure with exhaust holes formed in the flange plate. The polyurethane buffer comprises a polyurethane elastomer and the mounting flange for the polyurethane buffer. According to the polyurethane buffer, the stress concentration phenomenon can be greatly reduced, the structural strength is good, stress is uniform, and the service life is long.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyurethane bumper technical field, provide a kind of mounting flange and polyurethane bumper for polyurethane bumper especially. BACKGROUND

[0002] Polyurethane bumper is a common buffer device, mainly by two parts, one part is polyurethane elastomer, for absorbing the energy of impact, play buffering energy-absorbing effect, another part is mounting flange, for firmly combined with polyurethane elastomer and through mounting flange and mechanical equipment connection. Currently, the production of polyurethane bumper mounting flange usually adopts steel plate material, and U-shaped steel bar is welded on the steel plate, and the U-shaped steel bar is used to form a cross structure, the cross structure is used to fix the polyurethane elastomer material, to maintain the connection strength of polyurethane material and steel plate. This structure can increase the connection strength of polyurethane material and steel mounting flange, however, such structure arrangement will cause stress concentration of polyurethane elastomer under stress, leading to deformation limitation or abnormal deformation of polyurethane material, local damage, affect the buffering performance and effect, reduce service life, in addition, due to the cross structure formed by steel bar under impact force, some will produce plastic permanent deformation, leading to polyurethane elastomer cannot completely recover.

[0003] Therefore, how to improve the structure of existing polyurethane bumper to reduce stress concentration, improve structural strength, ensure buffering performance and effect, prolong the service life of bumper, become the problem to be solved. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a kind of mounting flange and polyurethane bumper for polyurethane bumper to solve the problems existing in prior art.

[0005] The utility model provides a kind of mounting flange for polyurethane bumper on the one hand, including: flange plate and fastening plate, wherein, the fastening plate is bowl-shaped and bowl mouth position is fixedly connected with the middle part of the flange plate, multiple through holes are arranged on the fastening plate at intervals, mounting hole is provided on the flange plate, the mounting hole is arranged at intervals along the circumference of the flange plate, the position corresponding to the bowl mouth of the flange plate and the fastening plate is completely open structure or the plate structure with exhaust hole is arranged on it.

[0006] Preferably, annular dovetail groove structure is provided on the flange plate, and the annular dovetail groove structure is located on the outside of the fastening plate.

[0007] Further preferably, the fastening plate and the flange plate are split connection structure or one-piece structure.

[0008] Further preferably, the through holes include a central hole located in the middle of the fastening plate and a surrounding hole arranged around the central hole.

[0009] Further preferably, when the flange plate and the bowl mouth corresponding position of the fastening plate are plate structures provided with exhaust holes thereon, the exhaust holes are arranged one-to-one with the through holes on the fastening plate.

[0010] The utility model also provides a kind of polyurethane bumper, comprising: polyurethane elastomer and above polyurethane bumper mounting flange, wherein, the polyurethane elastomer is poured on the polyurethane bumper mounting flange and located the side of the fastening plate.

[0011] Preferably, annular dovetail groove structure is arranged on the flange plate of the polyurethane bumper mounting flange, the annular dovetail groove structure is located the outside of the fastening plate of the polyurethane bumper mounting flange, and the polyurethane elastomer fills the annular dovetail groove structure.

[0012] Further preferably, the fastening plate is located at the central position of the bottom of the polyurethane elastomer.

[0013] The polyurethane bumper provided by the utility model is firm in mounting flange and polyurethane elastomer connection, the fastening plate on mounting flange is bowl-shaped, can greatly reduce stress concentration phenomenon, and improve structural strength, simultaneously, when being impacted, the uniform distribution of load can be realized.

[0014] The polyurethane bumper provided by the utility model is reasonable in structure, convenient in manufacture, reliable in installation, good in structural strength, even in stress, and long in service life. ACCURACY OF DRAWINGS

[0015] The utility model will be explained further in detail in combination with the drawings and implementation:

[0016] Figure 1 It is the structure schematic view of polyurethane bumper mounting flange provided by the utility model;

[0017] Figure 2 It is the front view of polyurethane bumper mounting flange provided by the utility model;

[0018] Figure 3 It is Figure 2 A-A section view. DETAILED DESCRIPTION

[0019] The utility model will be explained further in detail in combination with the drawings and implementation:

[0020] In order to solve the stress concentration, local easy damage, short service life and other problems of existing polyurethane bumper, such asFigures 1 to 3 The utility model discloses a mounting flange for polyurethane bumper, including: flange plate 1 and fastening plate 2, wherein, the fastening plate 2 is bowl-shaped and bowl mouth position with the middle part fixed connection of flange plate 1, a plurality of through -hole 21 are arranged on the fastening plate 2 at intervals, for making polyurethane material enter bowl inner space, the mounting hole 11 is set up on the flange plate 1, the mounting hole 11 is arranged at intervals along the circumferential direction of flange plate 1, the bowl mouth corresponding position of flange plate 1 with fastening plate 2 is completely open structure (not shown in the drawing) or the plate structure (such as Figure 3 Shown) is set up with exhaust hole 12 on it.

[0021] The mounting flange for polyurethane bumper, through the middle part connection bowl-shaped fastening plate of flange plate, can form a bowl-shaped space, through setting up through -hole on the fastening plate, when making polyurethane bumper, polyurethane stock solution foaming can enter the bowl-shaped space through the through -hole and finally fasten together with mounting flange. The mounting flange can be firmly coupled with the polyurethane elastomer, which can greatly reduce the stress concentration phenomenon and improve the structural strength of the bumper. At the same time, when impacted, uniform distribution of load can be achieved.

[0022] As an improvement of the technical scheme, as Figures 1 to 3 Shown, the flange plate 1 is provided with annular dovetail groove structure 13, and the annular dovetail groove structure 13 is located on the outer side of the fastening plate 2. When making the polyurethane bumper, the annular dovetail groove structure is also filled with polyurethane stock solution foaming, which can strengthen the strength of the polyurethane elastomer in the circumferential direction and prevent the polyurethane elastomer from peeling off around when stressed.

[0023] As an improvement of the technical scheme, the fastening plate 2 and the flange plate 1 are connected in a split structure or an integral forming structure. Preferably, both the fastening plate 2 and the flange plate 1 are steel plates, and they are connected in a split structure by welding. At this time, the position corresponding to the bowl mouth of the flange plate 1 and the fastening plate 2 is a plate structure provided with exhaust holes 12 (as shown in Figure 3 ), and the exhaust holes 12 are used to exhaust the air in the bowl inner space when the polyurethane stock solution foaming enters the bowl inner space. When the fastening plate 2 and the flange plate 1 are integrally formed, such as nylon injection molding, the position corresponding to the bowl mouth of the flange plate and the fastening plate is preferably a completely open structure to facilitate injection molding. When this position is a completely open structure, a back plate can be arranged behind the flange plate to limit the overflow of polyurethane into the bowl inner space when making the bumper. After the bumper is made, the back plate is removed, and the bumper is obtained.

[0024] As an improvement of the technical scheme, as Figures 1 to 3As shown in the drawings, the through hole 21 includes a center hole 211 located in the middle of the fastening plate 2 and a surrounding hole 212 arranged around the center hole 211.

[0025] As an improvement of the technical solution, when the position corresponding to the bowl opening of the flange plate 1 and the fastening plate 2 is a plate structure provided with an exhaust hole 12 thereon, as shown in the drawings, Figure 2 As shown in the drawings, the exhaust hole 12 is arranged one-to-one corresponding to the through hole 21 on the fastening plate 2.

[0026] The utility model also provides a kind of polyurethane bumper, comprising: polyurethane elastomer and above-mentioned polyurethane bumper installation flange, wherein, the polyurethane elastomer is poured on the polyurethane bumper installation flange and located the side of the fastening plate 2.

[0027] The manufacturing method of the polyurethane bumper is as follows: first, polyurethane stock solution is foamed and poured in a mold, then the installation flange is covered, the polyurethane stock solution is foamed to fill the bowl-shaped space of the fastening plate through the through hole on the fastening plate and form an integral whole, and finally the polyurethane elastomer and the installation flange are fastened. The installation flange of the polyurethane bumper is firmly coupled with the polyurethane elastomer, the stress concentration phenomenon can be greatly reduced by the fastening plate on the installation flange, and the structural strength is improved. At the same time, when impacted, uniform distribution of load can be achieved.

[0028] As an improvement of the technical solution, as shown in the drawings, Figures 1 to 3 The flange plate 1 of the polyurethane bumper installation flange is provided with an annular dovetail groove structure 13, the annular dovetail groove structure 13 is located on the outer side of the fastening plate 2 of the polyurethane bumper installation flange, the polyurethane elastomer fills the annular dovetail groove structure 13, which can strengthen the strength of the polyurethane elastomer in the circumferential direction and prevent the polyurethane elastomer from peeling off around when stressed.

[0029] The specific embodiments of the utility model are written in a progressive manner, and the differences between each embodiment are emphasized, and the similar parts can be referred to each other.

[0030] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the art without departing from the purpose of the utility model.

Claims

1. A mounting flange for a polyurethane shock absorber, characterized in that, include: The flange plate (1) and the fastening plate (2) are provided, wherein the fastening plate (2) is bowl-shaped and the bowl opening is fixedly connected to the middle of the flange plate (1). The fastening plate (2) is provided with a plurality of through holes (21) at intervals. The flange plate (1) is provided with mounting holes (11) at intervals along the circumference of the flange plate (1). The flange plate (1) and the fastening plate (2) are at positions corresponding to the bowl openings of the flange plate (1) and the fastening plate (2) are either completely open structures or plate structures with vent holes (12).

2. The mounting flange for the polyurethane buffer according to claim 1, characterized in that: The flange plate (1) is provided with an annular dovetail groove structure (13), which is located on the outside of the fastening plate (2).

3. The mounting flange for the polyurethane buffer according to claim 1, characterized in that: The fastening plate (2) and the flange plate (1) are either separate connection structures or integral molding structures.

4. The mounting flange for the polyurethane buffer according to claim 1, characterized in that: The through hole (21) includes a central hole (211) located in the middle of the fastening plate (2) and a surrounding hole (212) arranged around the central hole (211).

5. The mounting flange for the polyurethane buffer according to claim 1, characterized in that: When the flange plate (1) and the fastening plate (2) are plate structures with vent holes (12) at the positions corresponding to the bowl openings, the vent holes (12) and the through holes (21) on the fastening plate (2) are arranged in a one-to-one correspondence.

6. A polyurethane buffer, characterized in that, include: The polyurethane elastomer and the mounting flange for the polyurethane buffer according to any one of claims 1 to 5, wherein the polyurethane elastomer is cast onto the mounting flange for the polyurethane buffer and is located on the side where the fastening plate (2) is located.

7. The polyurethane buffer according to claim 6, characterized in that: The flange plate (1) of the polyurethane damper mounting flange is provided with an annular dovetail groove structure (13), the annular dovetail groove structure (13) is located outside the fastening plate (2) of the polyurethane damper mounting flange, and the polyurethane elastomer fills the annular dovetail groove structure (13).

8. The polyurethane buffer according to claim 6, characterized in that: The fastening plate (2) is located at the center of the bottom of the polyurethane elastomer.

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