Destressing device for rack push rod mechanism

Abstract

The utility model relates to the field of racks, in particular to a rack push rod mechanism destressing device which comprises a rack body, an auxiliary groove is formed in the side, away from the tooth pitch, of one end of the rack body, and a plurality of spring auxiliary assemblies are installed in the auxiliary groove at equal intervals. A plurality of reinforcing rib bodies are embedded in the positions, between every two adjacent spring auxiliary assemblies, of one side of the auxiliary groove at equal intervals. The cross section shape of the rack can be changed through the auxiliary groove, stress can be more evenly distributed in the rack, the stress concentration phenomenon of the tooth pitch part is reduced, the reinforcing rib body is matched, the deformation resistance of the rack is enhanced, and meanwhile the spring auxiliary assembly is matched, so that when the rack is subjected to external force, the rack is prevented from being deformed. And the spring can generate elastic deformation to absorb partial stress, so that the stress load of the rack is reduced, and the service life of the rack is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to rack technical field especially relates to a rack push rod mechanism stress relief device. BACKGROUND

[0002] Rack is a kind of tooth distribution in the straight line of infinite length or finite length transmission parts, can be regarded as the side of infinite length gear, rack is a long strip-shaped toothed component, usually with gear and is used, for transmitting motion and power.

[0003] The existing rack tooth root part is prone to stress concentration phenomenon, so it is also the place most likely to produce crack and fracture.When rack is subjected to periodic load or instantaneous impact load, the stress at the tooth root can exceed the yield strength or fatigue limit of the material, thereby causing the generation of crack. These cracks will gradually expand, eventually leading to the fracture of tooth root. SUMMARY

[0004] The utility model discloses a rack push rod mechanism stress relief device to solve the shortcomings in the prior art.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A rack push rod mechanism stress relief device, including rack body, the rack body one end is away from the tooth pitch side and is equipped with auxiliary recess, and a plurality of spring auxiliary assemblies are installed at equal distance in auxiliary recess, and a plurality of reinforcing rib bodies are embedded at equal distance between adjacent two spring auxiliary assemblies on one side of auxiliary recess.

[0007] The spring auxiliary assembly includes fixed part, telescopic part, two fixed seats, the telescopic part is slidably arranged in the fixed part, and the fixed part and the telescopic part are provided with mounting rings at one end, the mounting rings are connected with the fixed seats by screw threads, and the spring body is arranged outside the fixed part between the two mounting rings.

[0008] In addition, preferably, the fixed seat is provided with an external thread portion outside, and the fixed seat is fixedly connected with the inner wall of the auxiliary recess at one end.

[0009] In addition, preferably, the fixed part and the telescopic part are fixedly provided with T-shaped fixing rings on one side, and the mounting ring is provided with a clamping cavity at the T-shaped fixing ring.

[0010] In addition, preferably, the mounting ring is provided with a mounting groove at one side at the fixed seat, and the mounting groove is provided with an internal thread portion at the external thread portion, and the internal thread portion is connected with the external thread portion by screw threads.

[0011] In addition, preferably, a groove is formed in the rack body at the reinforcing rib body, the height of the groove is consistent with the height of the reinforcing rib body, and the height of the reinforcing rib body is less than the height of the auxiliary groove.

[0012] The utility model discloses the beneficial effects are:

[0013] In the utility model, the cross section shape of the rack can be changed through the auxiliary groove, stress is more evenly distributed in the rack, and stress concentration phenomenon of the pitch part is reduced, wherein the reinforcing rib body is arranged, the ability of the rack to resist deformation is enhanced, and the spring auxiliary assembly is arranged, when the rack is subjected to external force, the spring can be elastically deformed, part of stress is absorbed, the stress burden of the rack is reduced, and the service life of the rack is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 A structure diagram of a rack push rod mechanism stress relieving device is provided in the utility model.

[0015] Fig. 2 A split structure diagram of a rack push rod mechanism stress relieving device is provided in the utility model.

[0016] Fig. 3 A structure diagram of A is enlarged.

[0017] In the drawing: 1, rack body;2, auxiliary groove;3, spring auxiliary assembly;31, fixed seat;32, mounting ring;33, T-shaped fixed ring;34, fixed part;35, telescopic part;36, spring body;4, reinforcing rib body. DETAILED DESCRIPTION

[0018] The technical scheme 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, and obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0019] Referring to Figs. 1-3 A rack push rod mechanism stress relieving device, comprising a rack body 1, the rack body 1 is provided with an auxiliary groove 2 away from the pitch side at one end, a plurality of spring auxiliary assemblies 3 are installed at equal distances in the auxiliary groove 2, and a plurality of reinforcing rib bodies 4 are embedded at equal distances between adjacent two spring auxiliary assemblies 3 on one side of the auxiliary groove 2;Wherein, it is worth noting that the specific structure and working principle of the rack body 1 and the pitch of the rack body 1 are the existing technology disclosed on the market at present, and do not belong to the main technical problems to be solved in the utility model, therefore, the utility model does not add much description.

[0020] And the spring auxiliary assembly 3 includes a fixed part 34, a telescopic part 35, two fixed seats 31, the telescopic part 35 is slidably arranged in the fixed part 34, and the fixed part 34 and the telescopic part 35 are provided with mounting rings 32 at one end, the mounting rings 32 are screw-connected with the fixed seats 31, and a spring body 36 is arranged between the two mounting rings 32 and outside the fixed part 34, and it is worth noting that the two ends of the spring body 36 are not connected with the corresponding mounting rings 32.

[0021] Meanwhile, the fixed seat 31 is provided with an external thread part outside, and one end of the fixed seat 31 is fixedly connected with the inner wall of the auxiliary groove 2.

[0022] Meanwhile, the fixed part 34 and the telescopic part 35 are fixedly provided with T-shaped fixing rings 33 on one side, and a clamping cavity is formed in the mounting ring 32 and located at the T-shaped fixing ring 33.

[0023] And the mounting ring 32 is provided with a mounting groove at one side and located at the fixed seat 31, and an internal thread part is arranged in the mounting groove and located at the external thread part, and the internal thread part is screw-connected with the external thread part.

[0024] Further, the rack body 1 is provided with an embedding groove at the reinforcing rib body 4, and the height of the embedding groove is consistent with the height of the reinforcing rib body 4, and the height of the reinforcing rib body 4 is less than the height of the auxiliary groove 2.

[0025] In the embodiment, the auxiliary groove 2 can change the cross-sectional shape of the rack, so that the stress is more uniformly distributed in the rack, and the stress concentration phenomenon of the pitch part is reduced, and the setting of the reinforcing rib body 4 enhances the ability of the rack to resist deformation and reduces the deformation and stress concentration phenomenon caused by stress.

[0026] Meanwhile, the setting of the spring auxiliary assembly 3 can cause the spring to elastically deform when the rack is subjected to external force, absorb part of the stress, reduce the stress burden of the rack, and improve the service life of the rack.

[0027] And the fixed part 34 and the telescopic part 35 are connected with the mounting ring 32 through the T-shaped fixing ring 33 on one side, the mounting ring 32 is screw-rotated with the fixed seat 31, and does not hinder the normal use of the fixed part 34, the telescopic part 35 and the spring body 36, and the spring body 36 can be disassembled and replaced when damaged.

[0028] In the embodiment, the auxiliary groove 2 can change the cross-sectional shape of the rack, so that the stress is more uniformly distributed in the rack, and the stress concentration phenomenon of the pitch part is reduced, and the setting of the reinforcing rib body 4 enhances the ability of the rack to resist deformation, and the setting of the spring auxiliary assembly 3 can cause the spring to elastically deform when the rack is subjected to external force, absorb part of the stress, reduce the stress burden of the rack, and improve the service life of the rack.

[0029] The above merely describes a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the scope of protection of the present application.

Claims

1. A rack-and-pinion mechanism stress relief device comprising a rack body (1), characterized in that, The rack body (1) is provided with an auxiliary groove (2) at one end away from the pitch side, a plurality of spring auxiliary assemblies (3) are installed in the auxiliary groove (2) at equal distances, and a plurality of reinforcing rib bodies (4) are embedded at equal distances between adjacent two spring auxiliary assemblies (3) on one side of the auxiliary groove (2). The spring auxiliary assembly (3) comprises a fixed part (34), an expansion part (35) and two fixed seats (31), the expansion part (35) is slidingly arranged in the fixed part (34), one end of the fixed part (34) and the expansion part (35) is provided with a mounting ring (32), the mounting ring (32) is threadedly connected with the fixed seat (31), and a spring body (36) is arranged between the two mounting rings (32) outside the fixed part (34).

2. A rack-and-pinion de-stressing device according to claim 1, wherein, The fixed seat (31) is provided with an external thread part outside, and one end of the fixed seat (31) is fixedly connected with the inner wall of the auxiliary groove (2).

3. A rack and push rod mechanism stress relief device according to claim 1, wherein The fixed part (34) and the expansion part (35) are both fixedly provided with a T-shaped fixing ring (33) on one side, and a clamping cavity is formed in the mounting ring (32) at the position of the T-shaped fixing ring (33).

4. A rack and push rod mechanism stress relief device according to claim 1, wherein An installation groove is formed in the mounting ring (32) at the position of the fixed seat (31), an internal thread part is arranged in the installation groove at the position of the external thread part, and the internal thread part is threadedly connected with the external thread part.

5. A rack and push rod mechanism stress relief device according to claim 1, wherein, An embedding groove is formed in the rack body (1) at the position of the reinforcing rib body (4), the height of the embedding groove is consistent with the height of the reinforcing rib body (4), and the height of the reinforcing rib body (4) is smaller than the height of the auxiliary groove (2).

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