PU buffer with elastic composite layer structure

Abstract

The utility model relates to the technical field of PU (polyurethane) buffers, and discloses a PU buffer with an elastic composite layer structure, which solves the problem of poor buffer effect of the existing PU buffer, and comprises a PU buffer body, a support base and a pneumatic auxiliary buffer component, the pneumatic auxiliary buffer assembly is located in the PU buffer body and fixedly connected with the supporting base. The PU buffer body is composed of a high-density PU base, a medium-density PU middle layer, a low-density PU buffer layer, a high-density PU protective sleeve and a top plate. According to the PU buffer, by adopting the combination of the polyurethane elastomers with different hardness, the balance of rigidity and flexibility can be realized, and the buffer effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of PU buffer technology, specifically a PU buffer with an elastic composite layer structure. Background Technology

[0002] PU buffers, or polyurethane buffers, are semi-energy-dissipating buffers primarily used for elevator safety buffering, industrial crane anti-collision buffering, and vibration damping and limiting in rail transit. Existing polyurethane buffers are typically one-piece structures, lacking segmented buffering capabilities and failing to achieve a balanced optimization of rigidity and flexibility, thus affecting buffering effectiveness in practical use. Therefore, this application proposes a PU buffer with an elastic composite layer structure. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a PU buffer with an elastic composite layer structure, which effectively solves the problem of poor buffering effect of existing PU buffers.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a PU buffer with an elastic composite layer structure, comprising a PU buffer body, a support base, and a pneumatic auxiliary buffer assembly. The PU buffer body is connected to the top of the support base, and the pneumatic auxiliary buffer assembly is located inside the PU buffer body and fixedly connected to the support base. The PU buffer body is composed of a high-density PU base, a medium-density PU intermediate layer, a low-density PU buffer layer, a high-density PU sheath, and a top plate. The high-density PU base is connected to the top of the support base, the medium-density PU intermediate layer is fixedly connected to the top of the high-density PU base, the low-density PU buffer layer and the high-density PU sheath are both fixedly connected to the top of the medium-density PU intermediate layer, the high-density PU sheath is fixedly connected to the arc-shaped outer surface of the low-density PU buffer layer, and the top plate is fixedly connected to the top of the low-density PU buffer layer and the high-density PU sheath.

[0005] Preferably, the contact surfaces of the high-density PU base, medium-density PU intermediate layer, low-density PU buffer layer, high-density PU sheath, and top plate are all bonded with adhesive.

[0006] Preferably, the high-density PU base has an inner mounting groove in the middle, the medium-density PU intermediate layer has a central groove in the middle, and the low-density PU buffer layer has a central groove in the middle. The low-density PU buffer layer has a porous structure.

[0007] Preferably, the arc-shaped outer surfaces of the high-density PU base, the medium-density PU intermediate layer, and the high-density PU sheath are all provided with annular grooves, and a number of hemispherical rubber seats are fixedly provided at the top of the top plate.

[0008] Preferably, the support base is composed of a stainless steel base plate and a stainless steel clamp connector. The stainless steel clamp connector is welded to the middle position of the top of the stainless steel base plate. The stainless steel clamp connector has several vertical vent holes, and the stainless steel base plate has several horizontal vent holes that communicate with the vertical vent holes.

[0009] Preferably, the pneumatic auxiliary buffer assembly consists of a cylinder liner, a telescopic arm, a force plate, and a spring. The cylinder liner is welded to the middle position of the top of the stainless steel clamp connector. The telescopic arm slides through the cylinder liner. The force plate is fixedly connected to the top of the telescopic arm. The spring is connected between the force plate and the high-density PU base. Several air holes are opened at the bottom of the side of the cylinder liner.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) In operation, by setting up a PU buffer body consisting of a high-density PU base, a medium-density PU intermediate layer, a low-density PU buffer layer, a high-density PU sheath and a top plate, the combination of polyurethane buffer bodies of different densities can achieve an optimized combination of rigidity and flexibility, which not only improves the buffering effect, but also ensures the overall stability, avoids excessive rigidity affecting the buffering effect, and avoids excessive flexibility affecting the overall strength. By setting up center groove one, center groove two and installation inner groove, air can be vented during buffering. By setting up an annular groove, the friction damping of the outer surface can be enhanced. By setting up a hemispherical rubber seat, the anti-slip effect can be improved, and it also has a buffering effect.

[0012] (2) By setting a support base consisting of a stainless steel base plate and a stainless steel clip, it can be installed with the PU buffer body. By setting vertical and horizontal exhaust holes, the air inside the PU buffer body can be discharged during buffering.

[0013] (3) By setting up a pneumatic auxiliary buffer assembly consisting of a cylinder liner, telescopic arm, force plate and spring, the auxiliary buffering function can be realized and the damping function can be achieved, further improving the buffering effect. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the PU buffer structure with an elastic composite layer structure of this utility model;

[0017] Figure 2This is a partial structural diagram of the PU buffer with an elastic composite layer structure according to this utility model;

[0018] Figure 3 This is a schematic diagram of the PU buffer body structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the support base structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the pneumatic auxiliary buffer assembly of this utility model;

[0021] In the diagram: 1. PU shock absorber body; 2. Support base; 3. Pneumatic auxiliary shock absorber assembly; 4. High-density PU base; 5. Medium-density PU intermediate layer; 6. Low-density PU buffer layer; 7. High-density PU sheath; 8. Top plate; 9. Mounting inner groove; 10. Center groove one; 11. Center groove two; 12. Annular groove; 13. Hemispherical rubber seat; 14. Stainless steel base plate; 15. Stainless steel snap connector; 16. Vertical exhaust port; 17. Horizontal exhaust port; 18. Cylinder liner; 19. Telescopic arm; 20. Force plate; 21. Spring; 22. Air hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Depend on Figures 1 to 5 The present invention discloses a PU buffer with an elastic composite layer structure, comprising a PU buffer body 1, a support base 2, and a pneumatic auxiliary buffer assembly 3. The PU buffer body 1 is connected to the top of the support base 2, and the pneumatic auxiliary buffer assembly 3 is located inside the PU buffer body 1 and fixedly connected to the support base 2. The PU buffer body 1 is composed of a high-density PU base 4, a medium-density PU intermediate layer 5, a low-density PU buffer layer 6, a high-density PU sheath 7, and a top plate 8. The high-density PU base 4 is connected to the top of the support base 2, the medium-density PU intermediate layer 5 is fixedly connected to the top of the high-density PU base 4, the low-density PU buffer layer 6 and the high-density PU sheath 7 are both fixedly connected to the top of the medium-density PU intermediate layer 5, the high-density PU sheath 7 is fixedly connected to the arc-shaped outer surface of the low-density PU buffer layer 6, and the top plate 8 is fixedly connected to the top of the low-density PU buffer layer 6 and the high-density PU sheath 7.

[0024] The combined structure consisting of a high-density PU base 4, a medium-density PU intermediate layer 5, a low-density PU buffer layer 6, and a high-density PU sheath 7 can balance rigidity and flexibility, forming an optimized combination of rigidity and flexibility. This not only improves the buffering effect but also ensures overall stability. It can achieve graded buffering, with strong initial buffering effect that can absorb most of the impact, and weaker buffering effect in the later stages to form a damping effect, thereby improving the overall buffering effect of the PU buffer.

[0025] The contact surfaces of the high-density PU base 4, medium-density PU intermediate layer 5, low-density PU buffer layer 6, high-density PU sheath 7, and top plate 8 are all glued together, which can improve the stability of the connection.

[0026] The high-density PU base 4 has an inner mounting groove 9 in the middle position, the medium-density PU intermediate layer 5 has a central groove 10 in the middle position, and the low-density PU buffer layer 6 has a central groove 2 11 in the middle position. The low-density PU buffer layer 6 has a porous structure. The inner mounting groove 9 can be connected to the support base 2. The central groove 10, the central groove 2 11 and the inner mounting groove 9 can achieve air release during the compression and buffering process.

[0027] The arc-shaped outer surfaces of the high-density PU base 4, the medium-density PU intermediate layer 5, and the high-density PU sheath 7 are all provided with annular grooves 12. Several hemispherical rubber seats 13 are fixedly provided at the top of the top plate 8. The annular grooves 12 can enhance the surface friction damping, and the hemispherical rubber seats 13 can improve the anti-slip performance and also have a certain cushioning effect.

[0028] The support base 2 is composed of a stainless steel base plate 14 and a stainless steel clamp connector 15. The stainless steel clamp connector 15 is welded to the middle position of the top of the stainless steel base plate 14. Several vertical exhaust holes 16 are opened on the stainless steel clamp connector 15, and several horizontal exhaust holes 17 connected to the vertical exhaust holes 16 are opened on the stainless steel base plate 14.

[0029] The stainless steel clamp 15 can be installed with the mounting inner groove 9, and the vertical vent 16 and the horizontal vent 17 can be connected with the central groove 10, the central groove 2 11 and the mounting inner groove 9, so that venting can be achieved during the compression buffering process.

[0030] The pneumatic auxiliary buffer assembly 3 consists of a cylinder liner 18, a telescopic arm 19, a force plate 20, and a spring 21. The cylinder liner 18 is welded to the middle position of the top of the stainless steel clamp connector 15. The telescopic arm 19 slides through the cylinder liner 18. The force plate 20 is fixedly connected to the top of the telescopic arm 19. The spring 21 is connected between the force plate 20 and the high-density PU base 4. Several air holes 22 are opened at the bottom of the side of the cylinder liner 18.

[0031] At the end of the buffering process, the top plate 8 contacts the force plate 20 and drives the force plate 20 to press down. The force plate 20 drives the telescopic arm 19 to press down, and the air inside the cylinder liner 18 is compressed and buffered. At the same time, the exhaust is buffered through the air hole 22. The air compression process also has a damping effect. The spring 21 can have a buffering effect and can also drive the telescopic arm 19 and the force plate 20 to return to their original positions.

[0032] In operation, the PU buffer body, composed of a high-density PU base, a medium-density PU intermediate layer, a low-density PU buffer layer, a high-density PU sheath, and a top plate, combines polyurethane buffers of different densities to achieve an optimized balance between rigidity and flexibility. This improves the buffering effect while ensuring overall stability, preventing excessive rigidity from affecting the buffering effect and excessive flexibility from affecting the overall strength. The central grooves (center one, center groove two, and mounting inner groove) allow for air venting during buffering. The annular groove enhances the frictional damping of the outer surface, and the hemispherical rubber seat improves anti-slip performance while also providing buffering. A support base, consisting of a stainless steel base plate and stainless steel clips, allows for installation with the PU buffer body. Vertical and horizontal vents allow for the expulsion of air from inside the PU buffer body during buffering. A pneumatic auxiliary buffer assembly, consisting of a cylinder liner, telescopic arm, force plate, and springs, provides auxiliary buffering and damping, further enhancing the buffering effect.

Claims

1. A PU buffer with an elastic composite layer structure, comprising a PU buffer body (1), a support base (2), and a pneumatically assisted buffer assembly (3), characterized in that: The PU buffer body (1) is connected to the top of the support base (2). The pneumatic auxiliary buffer assembly (3) is located inside the PU buffer body (1) and is fixedly connected to the support base (2). The PU buffer body (1) is composed of a high-density PU base (4), a medium-density PU intermediate layer (5), a low-density PU buffer layer (6), a high-density PU sheath (7), and a top plate (8). The high-density PU base (4) is connected to the top of the support base (2). The medium-density PU intermediate layer (5) is fixedly connected to the top of the high-density PU base (4). The low-density PU buffer layer (6) and the high-density PU sheath (7) are both fixedly connected to the top of the medium-density PU intermediate layer (5). The high-density PU sheath (7) is fixedly connected to the arc-shaped outer surface of the low-density PU buffer layer (6). The top plate (8) is fixedly connected to the top of the low-density PU buffer layer (6) and the high-density PU sheath (7).

2. A PU buffer with an elastic composite layer structure according to claim 1, characterized in that: The contact surfaces of the high-density PU base (4), medium-density PU intermediate layer (5), low-density PU buffer layer (6), high-density PU sheath (7) and top plate (8) are all glued together.

3. A PU buffer with an elastic composite layer structure according to claim 1, characterized in that: The high-density PU base (4) has an inner groove (9) in the middle, the medium-density PU intermediate layer (5) has a central groove (10) in the middle, and the low-density PU buffer layer (6) has a central groove (11) in the middle. The low-density PU buffer layer (6) has a porous structure.

4. A PU buffer with an elastic composite layer structure according to claim 1, characterized in that: The high-density PU base (4), the medium-density PU intermediate layer (5) and the high-density PU sheath (7) are all provided with annular grooves (12) on their arc-shaped outer surfaces, and a number of hemispherical rubber seats (13) are fixedly provided on the top of the top plate (8).

5. A PU buffer with an elastic composite layer structure according to claim 1, characterized in that: The support base (2) is composed of a stainless steel base plate (14) and a stainless steel clamp connector (15). The stainless steel clamp connector (15) is welded to the middle position of the top of the stainless steel base plate (14). Several vertical exhaust holes (16) are opened on the stainless steel clamp connector (15), and several horizontal exhaust holes (17) communicating with the vertical exhaust holes (16) are opened on the stainless steel base plate (14).

6. A PU buffer with an elastic composite layer structure according to claim 5, characterized in that: The pneumatic auxiliary buffer assembly (3) consists of a cylinder liner (18), a telescopic arm (19), a force plate (20), and a spring (21). The cylinder liner (18) is welded to the middle position of the top of the stainless steel clamp connector (15). The telescopic arm (19) slides through the cylinder liner (18). The force plate (20) is fixedly connected to the top of the telescopic arm (19). The spring (21) is connected between the force plate (20) and the high-density PU base (4). Several air holes (22) are opened at the bottom of the side of the cylinder liner (18).

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