CN210261897U - Shot peening strengthening device capable of remarkably prolonging fatigue life of transverse plate spring - Google Patents
Shot peening strengthening device capable of remarkably prolonging fatigue life of transverse plate spring Download PDFInfo
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- CN210261897U CN210261897U CN201921314075.1U CN201921314075U CN210261897U CN 210261897 U CN210261897 U CN 210261897U CN 201921314075 U CN201921314075 U CN 201921314075U CN 210261897 U CN210261897 U CN 210261897U
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Abstract
The utility model relates to a horizontal leaf spring production technology field of automobile parts specifically discloses a showing peening strengthening device who improves horizontal leaf spring fatigue life, including spouting room and shot hopper, the inside of spouting the room is run through and is provided with conveyer, places horizontal leaf spring on the conveyer, and conveyer rotates the conveying of accomplishing horizontal leaf spring. The top of spouting the room is provided with a plurality of shower nozzles, and the shower nozzle intercommunication has the shot hopper, and inside the holding of shot hopper has the shot, and inside the shot entering shower nozzle of shot hopper to from the shower nozzle blowout entering spout the inside horizontal leaf spring of room and carry out the peening. The shot hopper is communicated with the shot elevator, the shot elevator conveys the shots into the shot hopper, manual lifting and charging are avoided, workload is reduced, and working efficiency is improved. The utility model discloses the advantage: simple structure, long product life, strong applicability, small workload, high working efficiency and convenient popularization and implementation.
Description
Technical Field
The utility model relates to a horizontal leaf spring production technology field of automobile parts specifically is a show peening strengthening device who improves horizontal leaf spring fatigue life.
Background
The steel plate spring (called plate spring for short) is an important elastic element of the automobile suspension, and is used for bearing and transmitting various forces except the vertical force between the automobile frame and the axle and the moment formed by the forces, so that the impact of the road surface on the automobile body is reduced, and the running smoothness and the operation stability of the automobile are ensured. The traditional automobile front and rear axles are respectively provided with two pairs of leaf springs which are bilaterally symmetrical, and mainly play a role in bearing, and the direction of the borne force is vertical downward. The concave surface of the plate spring bears tensile stress, the convex surface bears compressive stress, and the traditional plate spring only carries out shot peening strengthening on the concave surface of the plate spring.
The novel high-grade minibus suspension is provided with a transverse plate spring, the transverse plate spring plays a bearing role during working, upward jumping of a vehicle is restrained, and borne force is up-down alternating load. The transverse plate spring generally adopts a structure of one or two plates, so that the light weight of the automobile can be improved, and the cost is reduced. The transverse plate spring is strengthened by adopting a shot blasting process with concave and convex surfaces, so that the surface quality is improved, the surface residual stress is improved, and the fatigue life of a product is prolonged. Obviously, the conventional plate spring concave shot blasting process and equipment cannot meet the requirement of a transverse plate spring.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a show shot peening strengthening device who improves horizontal leaf spring fatigue life to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a show shot-peening strengthening device who improves horizontal leaf spring fatigue life, includes and spouts room and shot-peening hopper, spouts the inside of room and runs through and be provided with conveyer, places horizontal leaf spring on the conveyer, and conveyer rotates the conveying of accomplishing horizontal leaf spring. The top of spouting the room is provided with a plurality of shower nozzles, and the shower nozzle intercommunication has the shot hopper, and inside the holding of shot hopper has the shot, and inside the shot entering shower nozzle of shot hopper to from the shower nozzle blowout entering spout the inside horizontal leaf spring of room and carry out the peening. The shot hopper is communicated with the shot elevator, the shot elevator conveys the shots into the shot hopper, manual lifting and charging are avoided, workload is reduced, and working efficiency is improved.
The stress shot blasting clamp is placed on the conveying device, and the transverse plate spring is placed inside the stress shot blasting clamp. Pneumatic prepresses are arranged at two ports of the spraying chamber, and the pneumatic prepresses are convenient for pressing the transverse plate spring.
As a further aspect of the present invention: the conveying device is a conveying chain plate, the conveying chain plate is connected with a driving device, and the driving device drives the conveying chain plate to rotate.
As a further aspect of the present invention: the conveying device is used for conveying the bearing blocks, the bearing blocks are connected with the driving device in a conveying mode, and the bearing blocks are conveyed and rolled to complete conveying of the transverse plate springs under the action of the driving device.
As a further aspect of the present invention: the shot elevator is communicated with a dust collector, and dust generated in the shot elevator is sucked into the dust collector by the dust collector for treatment, so that air pollution is avoided.
As a further aspect of the present invention: the dust collector is communicated with the spraying chamber, and dust generated by shot blasting in the spraying chamber enters the dust collector to be treated, so that environmental pollution is avoided.
Compared with the prior art, the beneficial effects of the utility model are that: the fatigue life of the transverse plate spring product can be obviously prolonged, and the requirement of batch production is met. The method is suitable for shot peening strengthening of the leaf spring such as a leaf spring, a high-stress leaf spring, a variable cross-section less leaf spring and the like, and can also improve the fatigue life of the leaf spring. The shot elevator conveys the shots into the shot hopper, so that the manual lifting of the materials is avoided, the workload is reduced, and the working efficiency is improved. The utility model discloses the advantage: simple structure, long product life, strong applicability, small workload, high working efficiency and convenient popularization and implementation.
Drawings
FIG. 1 is a schematic view showing a first stage of a shot peening apparatus for remarkably improving the fatigue life of a transverse leaf spring.
FIG. 2 is a schematic diagram showing the second and third stages of the structure of a shot peening apparatus for remarkably improving the fatigue life of a transverse leaf spring.
In the figure, a pneumatic prepress 1, a spray chamber 2, a spray head 3, a steel shot hopper 4, a steel shot elevator 5, a dust collector 6, a stress shot blasting clamp 7, a bearing block conveyer 8, a transverse plate spring 9 and a conveying chain plate 10.
Detailed Description
In order to clearly understand the technical features, objects and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.
Example 1
Referring to fig. 1, a shot peening strengthening device for significantly improving fatigue life of a transverse plate spring comprises a spraying chamber 2 and a steel shot hopper 4, wherein a conveying chain plate 10 penetrates through the spraying chamber 2, the conveying chain plate 10 is connected with a driving device, the driving device drives the conveying chain plate 10 to rotate, the transverse plate spring 9 is placed on the conveying chain plate 10, and the conveying chain plate 10 rotates to complete conveying of the transverse plate spring 9. The top of the spray chamber 2 is provided with a plurality of spray heads 3, the spray heads 3 are communicated with a steel shot hopper 4, steel shots are contained in the steel shot hopper 4, the steel shots in the steel shot hopper 4 enter the spray heads 3, and the steel shots are sprayed out from the spray heads 3 and enter the transverse plate springs 9 in the spray chamber 2 to be shot-blasted. The steel shot hopper 4 is communicated with the steel shot elevator 5, and the steel shot elevator 5 conveys steel shots into the steel shot hopper 4, so that the manual lifting and loading are avoided, the workload is reduced, and the working efficiency is improved. The shot elevator 5 is communicated with a dust collector 6, and the dust collector 6 sucks dust generated in the shot elevator 5 into the dust collector 6 for treatment, so that air pollution is avoided.
Example 2
Referring to fig. 2, in the embodiment 1, the dust collector 6 is communicated with the spraying chamber 2, and dust generated by shot blasting in the spraying chamber 2 enters the dust collector 6 for treatment, so that environmental pollution is avoided. The spraying chamber 2 is internally provided with a bearing seat conveyor 8 in a penetrating way, the bearing seat conveyor 8 is connected with a driving device, and the bearing seat conveyor 8 rolls to complete the conveying of the transverse plate spring 9 under the action of the driving device. The stress peening jig 7 is placed on the bearing pedestal conveyor 8, and the horizontal plate spring 9 is placed inside the stress peening jig 7. Pneumatic prepressing machines 1 are arranged at two ports of the spraying chamber 2, and the pneumatic prepressing machines 1 are arranged to apply pressure to the transverse plate springs 9 conveniently.
The utility model discloses a theory of operation divide into three stage, and now the three stage branch states as follows:
the first stage is as follows: the convex surface of the transverse plate spring 9 is subjected to a free shot blasting stage: and starting the device, and after the requirement that the shot blasting strength of the device is not less than 0.2C is measured, the convex surfaces of the transverse plate springs 9 are upward, the single-row plate springs are longitudinally and uniformly placed on the conveying chain plate 10, and then the single-row plate springs pass through the spraying chamber 2 at a constant speed. The speed of the conveying chain plate is 2 m/min, the diameter of the round alloy steel shot is 0.6-0.8 mm, and the rotating speed of a shot blasting impeller is 3000 r/min.
And a second stage: carrying out rated stress shot blasting on the concave surface of the transverse plate spring 9: the concave surfaces of the transverse plate springs 9 which pass through the first stage are upward, the transverse plate springs are placed in the stress shot blasting clamp 7 in a single row and longitudinally, and the pneumatic prepressing machine 1 is used for applying load to the end parts of the transverse plate springs 9 simultaneously, so that the product reaches the rated stress of 550 MPa. And then locking the stress shot blasting clamp 7, fixing the deformation and keeping the rated stress of 550 MPa. Then passes through the spray chamber 2 at a constant speed. The bearing seat is conveyed at the speed of 8 m/min, the diameter of the rounding alloy steel shot is 0.8-1.0 mm, and the rotating speed of a shot blasting impeller is 3000 r/min.
And a third stage: the concave surface of the transverse plate spring 9 is subjected to a limiting stress shot blasting stage: and (3) the concave surfaces of the transverse plate springs 9 which pass through the second stage are upward, the transverse plate springs are placed in the stress shot blasting clamp 7 in a single row longitudinally, and the pneumatic prepressing machine 1 is used for simultaneously applying loads to the end parts of the transverse plate springs 9, so that the ultimate stress of the product is 1200 MPa. And then locking the stress shot blasting clamp 7, fixing the deformation and keeping the rated stress of 1200 MPa. Then passes through the spray chamber 2 at a constant speed. The bearing seat is conveyed at the speed of 8 m/min, the diameter of the rounding alloy steel shot is 0.8-1.0 mm, and the rotating speed of a shot blasting impeller is 3000 r/min.
And (3) detecting and comparing results:
1. the process 1 comprises the following steps: shot blasting process is carried out according to a common transverse plate spring 9. By using free shot blasting, only the concave surface of the transverse plate spring 9 is subjected to rated stress shot blasting. The speed of the conveying chain plate is 2 m/min, the diameter of the round alloy steel shot is 0.6-0.8 mm, and the rotating speed of a shot blasting impeller is 3000 r/min. And (3) testing results: the residual stress value of the concave surface is about-600 Mpa, the fatigue life of the product is about 14 ten thousand, and the product is obviously unqualified.
2. And (2) a process: shot blasting process is carried out according to a common transverse plate spring 9. Free shot blasting is adopted, the convex surface of the transverse plate spring 9 is subjected to free shot blasting firstly, the conveying chain plate 10 is at a speed of 2 m/min, the diameter of the round alloy steel shot is 0.6-0.8 mm, and the rotating speed of a shot blasting impeller is 3000 r/min. Then, the concave surface of the transverse plate spring 9 is subjected to rated stress shot peening. The speed of the conveying chain plate is 2 m/min, the diameter of the round alloy steel shot is 0.8-1.0 mm, and the rotating speed of a shot blasting impeller is 3000 r/min.
And (3) testing results: the residual stress value of the concave surface is about 600MPa, the residual stress of the convex surface is about 400MPa, the fatigue life of the product is about 20 ten thousand, and the product is greatly improved compared with the process 1 and still is unqualified.
3. And (3) a process: firstly, the concave surface of the transverse plate spring 9 is subjected to shot peening strengthening with rated stress 550 MPa. Then, the concave surface of the transverse plate spring 9 is shot-blasted with a limit stress of 1200 MPa. The convex surface is not shot blasted. The speed of the conveying chain plate is 2 m/min, the diameter of the round alloy steel shot is 0.8-1.0 mm, and the rotating speed of a shot blasting impeller is 3000 r/min.
And (3) testing results: the residual stress value of the concave surface is about-1100 Mpa, the fatigue life of the product is about 22 ten thousand, which is improved to a certain extent and still can not reach the standard requirement of more than 25 ten thousand.
4. And (4) a process: the convex surface of the transverse plate spring 9 is subjected to free shot blasting, the speed of a conveying chain is 2 m/min, the diameter of a round alloy steel shot is 0.6-0.8 mm, and the rotating speed of a shot blasting impeller is 3000 r/min. Then, the concave surface of the transverse plate spring 9 was shot-peened at a rated stress of 550MPa, and the concave surface of the transverse plate spring 9 was shot-peened at a ultimate stress of 1100MPa for a second time. The speed of the conveying chain plate is 2 m/min, the diameter of the round alloy steel shot is 0.8-1.0 mm, and the rotating speed of a shot blasting impeller is 3000 r/min.
And (3) testing results: the residual stress value of the concave surface is about-1100 MPa, the residual stress of the convex surface is about-400 MPa, the fatigue life of the product is over 28 ten thousand, and the fatigue life requirement of the product standard is met for over 25 ten thousand times.
The process test and the batch production practice show that the shot peening strengthening scheme can obviously prolong the fatigue life of the transverse plate spring 9 product and meet the batch production requirement.
The method is suitable for shot peening strengthening of the leaf spring such as a leaf spring, a high-stress leaf spring, a variable cross-section less leaf spring and the like, and can also improve the fatigue life of the leaf spring.
The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. The utility model provides a show shot-peening strengthening device who improves horizontal leaf spring fatigue life, including spouting room (2) and shot-peening hopper (4), the inside of spouting room (2) is run through and is provided with conveyer, horizontal leaf spring (9) are placed on the conveyer, a serial communication port, the top of spouting room (2) is provided with a plurality of shower nozzles (3), shower nozzle (3) intercommunication has shot-peening hopper (4), shot-peening hopper (4) intercommunication has shot-peening lifting machine (5), stress peening anchor clamps (7) have been placed on the conveyer, horizontal leaf spring (9) are placed in the inside of stress peening anchor clamps (7), the both ends mouth department of spouting room (2) is provided with pneumatic preformer (1).
2. A shot-peening apparatus with significantly improved fatigue life for transverse leaf springs according to claim 1, wherein the conveying means is a conveyor flight (10) and the conveyor flight (10) is connected to a drive means.
3. A shot-peening apparatus with significantly improved fatigue life for transverse leaf springs according to claim 1, wherein the conveyor is a pedestal feed (8), and the pedestal feed (8) is connected to a drive unit.
4. A shot-peening apparatus for significantly improving fatigue life of a transverse leaf spring according to any one of claims 1 to 3, wherein the shot lifter (5) is connected to a dust collector (6).
5. A shot-peening apparatus with significantly improved fatigue life of transverse leaf springs according to any of claims 1 to 3, characterized in that the suction cleaner (6) communicates with the chamber (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921314075.1U CN210261897U (en) | 2019-08-14 | 2019-08-14 | Shot peening strengthening device capable of remarkably prolonging fatigue life of transverse plate spring |
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| CN201921314075.1U CN210261897U (en) | 2019-08-14 | 2019-08-14 | Shot peening strengthening device capable of remarkably prolonging fatigue life of transverse plate spring |
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| CN210261897U true CN210261897U (en) | 2020-04-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358902A (en) * | 2019-08-14 | 2019-10-22 | 安庆安簧汽车零部件有限公司 | A kind of shot peening strengthening device and method significantly improving transverse leaf spring fatigue life |
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2019
- 2019-08-14 CN CN201921314075.1U patent/CN210261897U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358902A (en) * | 2019-08-14 | 2019-10-22 | 安庆安簧汽车零部件有限公司 | A kind of shot peening strengthening device and method significantly improving transverse leaf spring fatigue life |
| CN110358902B (en) * | 2019-08-14 | 2024-03-12 | 安庆安簧汽车零部件有限公司 | Shot peening strengthening device and method for remarkably prolonging fatigue life of transverse plate spring |
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