Composite transmission elastomer for coupler

Abstract

The invention discloses a composite transmission elastomer for a coupler, and belongs to the technical field of coupler production, the composite transmission elastomer comprises a plastic sleeve, a plurality of plastic bumps uniformly arranged on the circumferential outer wall of the plastic sleeve and a metal framework, the metal framework comprises a metal ring, a metal plate and a metal spring, one end of each metal plate is connected with the outer wall of the metal ring in a welded mode or integrally formed with the outer wall of the metal ring, the two sides of each metal plate are welded with one end of the corresponding metal spring, each metal plate and the corresponding metal spring connected with the metal plate jointly form an elastic supporting piece, and the multiple elastic supporting pieces are located in the multiple plastic protruding blocks in one-to-one correspondence respectively. And the plastic sleeve is sleeved outside the metal ring or the metal ring is positioned in the plastic sleeve and close to the inner wall of the circumference. The metal framework is organically integrated in the plastic sleeve and the plastic bumps to form a composite structure, so that the requirements of vibration reduction performance and bearing torque can be met at the same time, the application requirement of strong transmission is met, and the service life of a product is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of production of couplings, and specifically relates to a transmission elastomer of a coupling, and in particular to a composite transmission elastomer used for a coupling. Background Art

[0002] A coupling is a rotating transmission device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not disengage under normal circumstances.

[0003] In order to realize the buffer transmission function between the two connecting units of the coupling, a transmission elastic body is often installed between the two connecting units, such as Figure 1 As shown, the transmission elastomer includes a circular pure plastic sleeve 1 and a plurality of pure plastic protrusions 2 uniformly arranged on the circumferential outer wall of the pure plastic sleeve 1. When in use, the transmission protrusions of the two connecting units are respectively arranged with the pure plastic protrusions 2 in the circumferential direction, that is, the transmission protrusions of the two connecting units are not directly in contact with each other during rotational transmission, but are in contact with the pure plastic protrusions 2, and the damping characteristics of the pure plastic protrusions 2 are used to realize the buffering transmission function.

[0004] The transmission elastomer of the traditional coupling (i.e., the pure plastic sleeve 1 and the pure plastic protrusion 2) is injection molded from a single plastic material such as polyurethane or rubber, and has the following defects: the bearing torque of the plastic material is limited. When the transmission elastomer and the two connecting units of the coupling are combined to work together, when the motor, reducer and other equipment are started, braked and instantly overloaded, the impact on the transmission elastomer is very large, which can easily cause deformation, damage and failure of the transmission elastomer. After the transmission elastomer fails, it may cause serious damage to the entire transmission system.

[0005] If the transmission elastomer of the traditional coupling is to increase the load-bearing torque, it can only be achieved by increasing the hardness of the plastic material, but this will reduce the vibration reduction performance of the transmission elastomer. Therefore, no matter how the plastic material itself is improved, it is difficult to meet the requirements of vibration reduction performance and load-bearing torque at the same time. Summary of the invention

[0006] The purpose of the present invention is to provide a composite transmission elastomer for a coupling that can simultaneously meet the requirements of vibration reduction performance and load-bearing torque in order to solve the above-mentioned problems.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0008] A composite transmission elastomer for a coupling, comprising a circular ring-shaped plastic sleeve and a plurality of plastic protrusions uniformly arranged on the circumferential outer wall of the plastic sleeve, and also comprising a metal skeleton, wherein the metal skeleton comprises a circular ring-shaped metal ring, a metal plate and a metal spring, one end of the plurality of metal plates are respectively welded to the outer wall of the metal ring or formed as one piece, the large flat surfaces on both sides of each metal plate are respectively welded to one end of the metal spring, the elastic force direction of the metal spring is perpendicular to the metal plate, each metal plate and the metal spring connected to the metal plate together constitute an elastic support member, the plurality of elastic support members are respectively located in the plurality of plastic protrusions corresponding to each other, the plastic sleeve is fitted outside the metal ring or the metal ring is located inside the plastic sleeve near the circumferential inner wall.

[0009] Preferably, in order to meet the use requirements of bearing torque according to actual needs, the number of the metal springs on a large side surface of each metal plate is one or more.

[0010] Preferably, in order to more reliably position the entire metal skeleton, the width of the metal plate is smaller than the corresponding width of the plastic protrusion, the width of the elastic support member in the elastic force direction of the metal spring is smaller than the corresponding width of the plastic protrusion, and the end of the metal plate away from the metal ring is flush with the end of the plastic protrusion away from the plastic sleeve.

[0011] Preferably, in order to further enhance the overall stability of the composite transmission elastomer, the plastic sleeve, the plurality of plastic protrusions and the metal skeleton are integrally formed by injection molding.

[0012] Preferably, in order to facilitate processing and assembly and reduce costs, the metal ring is a stainless steel ring, the metal plate is a stainless steel plate, and the metal spring is a stainless steel coil spring.

[0013] The beneficial effects of the present invention are:

[0014] The present invention organically integrates the metal skeleton into the plastic sleeve and the plastic protrusion to form a composite structure, which can simultaneously meet the requirements of vibration reduction performance and load-bearing torque, thereby meeting the application needs of strong transmission and improving the service life of the product; the specific advantages are as follows: the plastic sleeve and the plastic protrusion have the nonlinear and structural damping characteristics of the plastic parts, the damping is large, and can effectively play a vibration reduction role; the metal spring has a large deformation amount and a large load-bearing capacity, and can withstand higher compression forces. The force is finally transmitted to the overall structure composed of the metal plate and the metal ring, so it can withstand higher torque and impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the transmission elastic body of a conventional coupling;

[0016] Figure 2 is a stereoscopic diagram of the composite transmission elastic body for the coupling according to the present invention;

[0017] Figure 3 It is a three-dimensional diagram of the metal skeleton of the composite transmission elastic body for the coupling of the present invention without the metal spring;

[0018] Figure 4 It is a front view of the composite transmission elastic body for the coupling according to the present invention;

[0019] Figure 5 is a side view of the composite transmission elastic body for a coupling according to the present invention;

[0020] Figure 6 yes Figure 5 One of the AA section views in;

[0021] Figure 7 yes Figure 5 The second AA section view in the figure. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings:

[0023] like Figure 2-Figure 7 As shown, the composite transmission elastomer for the coupling described in the present invention includes a circular plastic sleeve 4, a plurality of plastic protrusions 5 uniformly arranged on the circumferential outer wall of the plastic sleeve 4, and a metal skeleton, wherein the metal skeleton includes a circular metal ring 3, a metal plate 6 and a metal spring 7, one end of the plurality of metal plates 6 are respectively welded to the outer wall of the metal ring 3 or integrally formed, the large flat surfaces on both sides of each metal plate 6 are respectively welded to one end of the metal spring 7, the elastic force direction of the metal spring 7 is perpendicular to the metal plate 6, each metal plate 6 and the metal spring 7 connected to the metal plate 6 together constitute an elastic support member, the plurality of elastic support members are respectively located in the plurality of plastic protrusions 5 corresponding to each other, and the plastic sleeve 4 is sleeved on the outside of the metal ring 3 (or, the metal ring 3 is located in the plastic sleeve 4 near the circumferential inner wall).

[0024] like Figure 2-Figure 7 As shown, the present invention also discloses the following more optimized specific structures:

[0025] In order to meet the use requirements of bearing torque according to actual needs, the metal spring 7 on one large side of each metal plate 6 is a (such as Figure 6 shown) or more (each Figure 7 Two are shown).

[0026] In order to more reliably position the entire metal skeleton, the width of the metal plate 6 is smaller than the corresponding width of the plastic protrusion 5, the width of the elastic support member in the elastic force direction of the metal spring 7 is smaller than the corresponding width of the plastic protrusion 5, and the end of the metal plate 6 away from the metal ring 3 is flush with the end of the plastic protrusion 5 away from the plastic sleeve 4.

[0027] In order to further enhance the overall stability of the composite transmission elastomer, the plastic sleeve 4, the plurality of plastic protrusions 5 and the metal frame are integrally formed by injection molding.

[0028] In order to facilitate processing and assembly and reduce costs, the metal ring 3 is a stainless steel ring, the metal plate 6 is a stainless steel plate, and the metal spring 7 is a stainless steel coil spring.

[0029] like Figure 2-Figure 7 As shown, during production, the metal ring 3, the metal plate 6 and the metal spring 7 are first welded into a metal skeleton, and then the metal skeleton is placed in an injection mold as an integral metal part, and then liquid plastic is input. After it solidifies, the mold is disassembled to obtain the composite transmission elastomer formed in one piece by metal injection molding; when used, the transmission protrusions of the two connecting units of the coupling (not shown in the figure, and the relevant content in the utility model patent with the publication number "CN221723275U" can be referred to) are arranged in a circumferential direction with the plastic protrusions 5 at intervals, that is, the transmission protrusions of the two connecting units are not directly in contact with each other during rotational transmission, but are in contact with the plastic protrusions 5, and the damping characteristics of the plastic protrusions 5 are used to realize the buffering transmission function, and the metal springs 7 are used to realize the large load-bearing torque function. The composite transmission elastomer is not easy to be damaged and has a long service life.

[0030] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A composite transmission elastic body for a coupling, comprising a circular plastic sleeve and a plurality of plastic protrusions uniformly arranged on the circumferential outer wall of the plastic sleeve, characterized in that: It also includes a metal skeleton, which includes a circular metal ring, a metal plate and a metal spring. One end of each of the metal plates is welded to the outer wall of the metal ring or formed as one piece. The large flat surfaces on both sides of each of the metal plates are welded to one end of the metal spring. The elastic force direction of the metal spring is perpendicular to the metal plate. Each of the metal plates and the metal spring connected to the metal plate together constitute an elastic support member. The multiple elastic support members are respectively located in the multiple corresponding plastic protrusions. The plastic sleeve is mounted outside the metal ring or the metal ring is located inside the plastic sleeve near the inner wall of the circumference.

2. The composite transmission elastic body for a coupling according to claim 1, characterized in that: There are one or more metal springs on one large side of each metal plate.

3. The composite transmission elastic body for coupling according to claim 1, characterized in that: The width of the metal plate is smaller than the corresponding width of the plastic protrusion, the width of the elastic support member in the elastic force direction of the metal spring is smaller than the corresponding width of the plastic protrusion, and the end of the metal plate away from the metal ring is flush with the end of the plastic protrusion away from the plastic sleeve.

4. The composite transmission elastic body for a coupling according to any one of claims 1 to 3, characterized in that: The plastic sleeve, the plurality of plastic protrusions and the metal frame are integrally formed by injection molding.

5. The composite transmission elastic body for a coupling according to any one of claims 1 to 3, characterized in that: The metal ring is a stainless steel ring, the metal plate is a stainless steel plate, and the metal spring is a stainless steel coil spring.

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