Transmission shaft with damping discs at two ends

Abstract

The utility model discloses a double-end transmission shaft with damping discs, belongs to the technical field of transmission structures, and provides a double-end transmission shaft with damping discs capable of being connected with higher loads. The double-end transmission shaft comprises a main shaft body, half-section bodies are connected to the two ends of the main shaft body, the main shaft body comprises a hollow shaft, and inner rotating discs are arranged at the two ends of the hollow shaft; the end face, back on to the hollow shaft, of the inner rotary disc is fixedly connected with a plurality of outer sliding columns, the inner rotary disc is provided with inner sliding grooves between the outer sliding columns, the half section body comprises an outer rotary disc, one end face of the outer rotary disc is fixedly connected with a plurality of inner sliding columns, outer sliding grooves are formed between the outer rotary disc and the inner sliding columns, and elastic bridges are connected between the adjacent outer sliding columns and the inner sliding columns. Compared with an integrated structure of a column shaft body and a half section body in the prior art, the main shaft body and the half section body are designed to be of a split structure, and the elastic bridge structure arranged in the axial direction is arranged between the main shaft body and the half section body, so that impact caused by sudden rising of torque can be effectively absorbed.

Description

Technical Field

[0001] This application relates to the field of transmission structure technology, and in particular to a double-headed transmission shaft with a shock-absorbing disc. Background Technology

[0002] The drive shaft is one of the important components of the power system. It is usually located between the reducer and the differential. It forms a universal joint structure by cooperating with the connecting shaft through the cross shaft. Although the cross shaft and the drive shaft are rotatably connected, it is still a direct contact hard connection. When the engine suddenly outputs high power, the component forming the universal joint will bear a large load and is prone to breakage. Summary of the Invention

[0003] The purpose of this application is to provide a drive shaft with a double-headed shock-absorbing disc that can be connected to a higher load.

[0004] To achieve the above objectives, this application provides a double-headed drive shaft with a shock-absorbing disc: It includes a main shaft body, with half-sections connected to both ends of the main shaft body. The main shaft body includes a hollow shaft, with inner turntables at both ends of the hollow shaft. A plurality of outer sliding columns are fixedly connected to the end face of the inner turntable facing away from the hollow shaft. An inner sliding groove is formed between the outer sliding columns on the inner turntable. Each half-section includes an outer turntable, with a plurality of inner sliding columns fixedly connected to one end face of the outer turntable. Each inner sliding column is adapted to cooperate with one inner sliding groove to form a sliding pair. An outer sliding groove is formed between the inner sliding columns on the outer turntable, adapted to cooperate with the outer sliding columns to form a sliding pair. An elastic bridge connects adjacent outer and inner sliding columns. The other end face of the outer turntable has a hinge frame, adapted to cooperate with a cross shaft, thereby forming a universal joint structure.

[0005] As a preferred embodiment, the elastic bridge includes a buffer arc plate, with limiting hooks at both ends. The two limiting hooks of the same elastic bridge are respectively fitted onto the outer and inner sliding pillars of adjacent sliding pillars to provide a buffering effect when the distance between them changes.

[0006] As a preferred embodiment, the inner groove extends through both ends of the inner turntable, and the end of the inner sliding column passes through the inner groove and is fixedly connected to an inner sliding ring to ensure the fit between the inner sliding column and the inner groove.

[0007] As a preferred embodiment, the diameter of the outer slip ring is larger than that of the outer slip column, and the outer slip ring and the outer slip column are threaded together, which facilitates disassembly and assembly and ensures stable connection.

[0008] As a preferred embodiment, the outer sliding groove extends through both ends of the outer turntable, and the end of the outer sliding column passes through the outer sliding groove and is fixedly connected to an outer sliding ring to ensure the stability of the fit between the outer sliding column and the outer sliding groove.

[0009] As a preferred embodiment, the diameter of the inner slip ring is larger than that of the inner slip column, and the inner slip ring is threadedly connected to the inner slip column, which balances stability and ease of assembly and disassembly.

[0010] As a preferred embodiment, a plurality of the outer sliding pillars and inner sliding grooves are arranged at equal intervals around the axis of the inner turntable, and a plurality of the inner sliding pillars and outer sliding grooves are arranged at equal intervals around the axis of the outer turntable, so that the sliding pillars and sliding grooves can be matched and aligned.

[0011] As a preferred embodiment, the inner turntable has a clearance hole within the circle formed by the outer sliding column and the inner sliding groove, and the outer turntable has an embedded shaft within the circle formed by the inner sliding column and the outer sliding groove, which is suitable for engaging with the clearance hole to share the bending stress that the outer and inner sliding columns may be subjected to.

[0012] Compared with the prior art, the beneficial effects of this application are as follows:

[0013] (1) Compared with the integrated structure of the main shaft and the half section in the prior art, this application designs the main shaft and the half section as a separate structure, and sets an elastic bridge structure arranged along the axial direction between the main shaft and the half section, which can effectively absorb the impact caused by the sudden increase in torque, thereby reducing the probability of breakage at the drive shaft and universal joint.

[0014] (2) Both ends of the drive shaft are equipped with elastic bridge buffers. The buffer space is relatively large when connecting torque, which enables the drive shaft to withstand a larger load. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the double-headed drive shaft with shock-absorbing disc.

[0016] Figure 2 This is a three-dimensional structural diagram showing the fit between the elastic bridge of the double-headed drive shaft with shock-absorbing disc and the main shaft.

[0017] Figure 3 This is a three-dimensional structural diagram of the main shaft of the double-headed drive shaft with shock-absorbing disc.

[0018] Figure 4 This is a three-dimensional structural diagram of the elastic bridge and half-section of the drive shaft with double-headed shock absorber.

[0019] Figure 5 This is a three-dimensional structural diagram of a half-section of the drive shaft with a double-headed shock absorber.

[0020] Figure 6 This is a three-dimensional structural diagram of the elastic bridge of the double-headed drive shaft with shock-absorbing disc.

[0021] In the diagram: 1. Main spindle body; 101. Hollow shaft; 102. Inner turntable; 103. Outer sliding column; 104. Outer slip ring; 105. Clearance hole; 106. Inner sliding groove; 2. Half-section body; 201. Hinge frame; 202. Outer turntable; 203. Inner sliding column; 204. Inner slip ring; 205. Embedded shaft; 206. Outer sliding groove; 3. Elastic bridge; 301. Buffer arc plate; 302. Limiting hook. Detailed Implementation

[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0026] like Figure 1-6The transmission shaft with a double-headed shock absorber shown includes a cylindrical main shaft 1. Both ends of the main shaft 1 are connected to half-sections 2. The half-sections 2 can be combined with other half-sections 2 through a cross shaft to form a universal joint structure. The specific structure of the main shaft 1 includes a hollow shaft 101. Both ends of the hollow shaft 101 have coaxial inner turntables 102. Several outer sliding columns 103 are fixedly connected to the end face of the inner turntables 102 facing away from the hollow shaft 101. These outer sliding columns 103 are equidistantly arranged around the axis of the inner turntables 102. The inner turntables 102 have arc-shaped inner sliding grooves 106 between the outer sliding columns 103. These inner sliding grooves 106 are also equidistantly arranged around the axis of the inner turntables 102. The number of outer sliding columns 103 and inner sliding grooves 106 are equal and they are arranged alternately.

[0027] The specific structure of the semi-section 2 includes an outer turntable 202. A number of inner sliding pillars 203 are fixedly connected to one end face of the outer turntable 202. The number of these inner sliding pillars 203 is equal to the number of inner sliding grooves 106, and they are equidistantly arranged around the axis of the outer turntable 202. In this way, each inner sliding pillar 203 can cooperate with an inner sliding groove 106 to form a sliding pair. The inner sliding groove 106 needs to penetrate through both ends of the inner turntable 102. After the end of the inner sliding pillar 203 passes through the inner sliding groove 106, an inner sliding ring 204 is fixedly connected. The diameter of the inner sliding ring 204 is significantly larger than that of the inner sliding pillar 203, so as to limit the cooperation state between the inner sliding pillar 203 and the inner sliding groove 106. The inner sliding ring 204 is usually connected to the inner sliding pillar 203 by a thread, which facilitates disassembly and assembly, and has good stability after assembly.

[0028] The outer turntable 202 has outer sliding grooves 206 between the inner sliding columns 203. These outer sliding grooves 206 are also equidistantly arranged around the axis of the outer turntable 202. The number of outer sliding grooves 206 corresponds to the number of outer sliding columns 103. The outer sliding columns 103 are used to cooperate with the corresponding outer sliding grooves 206 to form a sliding pair. The outer sliding grooves 206 also pass through both ends of the outer turntable 202. The ends of the outer sliding columns 103 are also fixedly connected to the outer sliding rings 104 after passing through the outer sliding grooves 206. The diameter of the outer sliding rings 104 is significantly larger than that of the outer sliding columns 103. The outer sliding rings 104 are threadedly connected to the outer sliding columns 103, which takes into account both ease of disassembly and assembly stability.

[0029] An elastic bridge 3 is connected between adjacent outer sliding columns 103 and inner sliding columns 203. It is made of a highly elastic alloy material and is the main component for shock absorption. The specific structure of the elastic bridge 3 includes a buffer arc plate 301. Both ends of the buffer arc plate 301 have a limiting hook 302 bent into an arc shape. The two limiting hooks 302 of the same elastic bridge 3 are respectively sleeved on the outer sliding column 103 and the inner sliding column 203, providing elastic buffering when the outer sliding column 103 and the inner sliding column 203 are close to or far from each other.

[0030] The inner turntable 102 has a clearance hole 105 in the circle formed by the outer sliding column 103 and the inner sliding groove 106. The clearance hole 105 communicates with the inner cavity of the hollow shaft 101. The outer turntable 202 has an embedded shaft 205 in the circle formed by the inner sliding column 203 and the outer sliding groove 206, which fits into the clearance hole 105 to share the bending force that the sliding column may be subjected to. The other end face of the outer turntable 202 has a hinge frame 201, which is used to cooperate with the cross shaft to form a rotating pair.

[0031] Working principle: One end of the drive shaft is connected to the output end of the reducer, and the other end is connected to the input end of the differential. When the reducer outputs torque, the first half-section 2 connected to it forces a set of elastic bridges 3 at the first end to deform. The deformed elastic bridges 3 transmit the gently changing elastic force to the main shaft 1. The rotating main shaft 1 then forces another set of elastic bridges 3 at the tail end to deform. The elastic bridges 3 at the tail end also transmit the gentle elastic force to the input shaft of the differential. Although the deformation stroke of the elastic bridges 3 at the first and tail ends is not large, the combination of the two sets of elastic bridges 3 can obtain a large buffer range.

[0032] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A double-headed drive shaft with a shock-absorbing disc, characterized in that: The assembly includes a main shaft (1), with half-sections (2) connected to both ends of the main shaft (1). The main shaft (1) includes a hollow shaft (101), with inner turntables (102) at both ends of the hollow shaft (101). Several outer sliding columns (103) are fixedly connected to the end face of the inner turntables (102) facing away from the hollow shaft (101). An inner sliding groove (106) is formed between the outer sliding columns (103) on the inner turntables (102). The half-sections (2) include an outer turntable (202). A plurality of inner sliding columns (203) are fixedly connected to one end face. Each inner sliding column (203) is adapted to cooperate with an inner sliding groove (106) to form a sliding pair. An outer rotating disk (202) is provided with an outer sliding groove (206) between the inner sliding columns (203) and is adapted to cooperate with the outer sliding column (103) to form a sliding pair. An elastic bridge (3) is connected between adjacent outer sliding columns (103) and inner sliding columns (203). The other end face of the outer rotating disk (202) has a hinge frame (201) adapted to cooperate with a cross shaft.

2. The drive shaft with double-headed shock absorber as described in claim 1, characterized in that: The elastic bridge (3) includes a buffer arc plate (301), and both ends of the buffer arc plate (301) have limiting hooks (302). The two limiting hooks (302) of the same elastic bridge (3) are respectively sleeved on the outer sliding column (103) and the inner sliding column (203) of the adjacent elastic bridge (3).

3. The drive shaft with double-headed shock absorber as described in claim 1, characterized in that: The inner groove (106) passes through both ends of the inner turntable (102), and the end of the inner sliding column (203) passes through the inner groove (106) and is fixedly connected to the inner sliding ring (204).

4. The drive shaft with double-headed shock absorber as described in claim 3, characterized in that: The diameter of the inner slip ring (204) is larger than that of the inner slip column (203), and the inner slip ring (204) is threadedly connected to the inner slip column (203).

5. The drive shaft with double-headed shock absorber as described in claim 1, characterized in that: The outer slide groove (206) passes through both ends of the outer turntable (202), and the end of the outer slide column (103) passes through the outer slide groove (206) and is fixedly connected to the outer slide ring (104).

6. The drive shaft with double-headed shock-absorbing disc as described in claim 5, characterized in that: The diameter of the outer slip ring (104) is larger than that of the outer slip column (103), and the outer slip ring (104) is threadedly connected to the outer slip column (103).

7. The drive shaft with double-headed damping disc as described in any one of claims 1 to 6, characterized in that: A plurality of the outer sliding columns (103) and inner sliding grooves (106) are arranged at equal intervals around the axis of the inner turntable (102), and a plurality of the inner sliding columns (203) and outer sliding grooves (206) are arranged at equal intervals around the axis of the outer turntable (202).

8. The drive shaft with double-headed shock absorber as described in claim 7, characterized in that: The inner turntable (102) has a clearance hole (105) within the circle formed by the outer sliding column (103) and the inner sliding groove (106), and the outer turntable (202) has an embedded shaft (205) within the circle formed by the inner sliding column (203) and the outer sliding groove (206), which is suitable for engaging with the clearance hole (105).

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