CN209910958U - Fatigue test equipment for parking release mechanism of double-diaphragm disc type spring brake chamber - Google Patents
Fatigue test equipment for parking release mechanism of double-diaphragm disc type spring brake chamber Download PDFInfo
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- CN209910958U CN209910958U CN201920794373.9U CN201920794373U CN209910958U CN 209910958 U CN209910958 U CN 209910958U CN 201920794373 U CN201920794373 U CN 201920794373U CN 209910958 U CN209910958 U CN 209910958U
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Abstract
The utility model discloses a fatigue test device for a parking release mechanism of a double-diaphragm disc spring brake chamber, which comprises a frame, wherein a mounting bracket part and a thrust reverser are arranged on the frame, the mounting bracket part comprises a sample mounting wallboard and a fixed plate, a mounting hole for mounting a product to be tested and a through hole for extending an ejector rod are arranged on the sample mounting wallboard, the fixed plate and the thrust reverser are arranged at two sides of the sample mounting wallboard, a support rod is arranged between the fixed plate and the sample mounting wallboard, a sliding plate is connected on the support rod in a sliding way, a separating rod is arranged at one side of the sliding plate, which faces the sample mounting wallboard, a cylinder for moving the sliding plate is arranged on the fixed plate, the thrust reverser comprises a thrust wallboard and a position detection plate, the position detection plate is opposite to the through hole of the sample mounting wallboard, a compression spring is arranged between the, the utility model discloses can detect the fatigue nature that the parking removed the mechanism.
Description
Technical Field
The utility model belongs to the test equipment field, more specifically the mechanism fatigue test equipment is relieved in two diaphragm disc spring brake room parking that says so.
Background
The application number 2019100850009 Chinese patent discloses an automatic loading parking brake double-diaphragm disc type spring brake chamber, which comprises a front cover component, a middle body component and a rear cover component, wherein a push rod disc cavity, a service brake cavity, a parking brake front cavity and a parking brake rear cavity are formed; the release disc assembly comprises a release disc and a guide sleeve, the release disc is arranged on the guide sleeve, the guide sleeve is sleeved on the tappet, and an automatic combination mechanism is further arranged on the guide sleeve. The side end face of the front cover component is provided with an air outlet; the air outlet pipeline is arranged on the upper end face of the rear cover assembly, so that when the parking brake is in a released state before loading, the powerful spring is in a non-compression state, the influence of fatigue on the service life is removed, the transportation is facilitated, and the dustproof and waterproof effect in the brake chamber can be guaranteed.
When the automobile fails and cannot provide compressed air or a rear cavity leather membrane of a brake chamber is damaged, and the parking brake is released by air intake of the cavity C, the separation fork attached to the automobile extends into the rear cover assembly from an opening of the side end face of the rear cover assembly, penetrates through the through hole in the tappet support seat, pushes the self-locking sleeve to move left, enables the steel ball to be separated from the ball groove, enables the tappet to be separated from the self-locking sleeve, and enables the tappet to be recovered to the state before loading.
Before leaving factory, the product needs to be detected, and an important part of the product is to detect the fatigue of whether the self-locking sleeve, the guide sleeve, the steel ball and the tappet can be smoothly combined and separated, and the special equipment is not available at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a can remove tiredness of mechanism to the parking and carry out manifold cycles and detect to whether the inspection product can make the parking smoothly remove the mechanism and remove the mechanism fatigue test equipment of mechanism is removed in the stable work's of double diaphragm disc spring brake room parking in the regulation number of times.
In order to achieve the above purpose, the utility model provides a following technical scheme: a fatigue test device for a parking release mechanism of a double-diaphragm disc type spring brake chamber comprises a frame, wherein a mounting bracket part and a reverse thrust mechanism are arranged on the frame, the mounting bracket component comprises a sample mounting wallboard and a fixing plate, the sample mounting wallboard is provided with a mounting hole for mounting a product to be tested and a through hole for extending the ejector rod, the fixed plate and the reverse pushing mechanism are positioned at two sides of the sample mounting wallboard, a support rod is arranged between the fixed plate and the sample mounting wallboard, the support rod is connected with a sliding plate in a sliding way, one side of the sliding plate, which faces the sample mounting wallboard, is provided with a separation rod, the device comprises a fixed plate, a sliding plate, a reverse-pushing mechanism and a compression spring, wherein the fixed plate is provided with an air cylinder for enabling the sliding plate to move, the reverse-pushing mechanism comprises a reverse-pushing wallboard and a position detection plate, the position detection plate is over against a through hole of the sample installation wallboard, and the compression spring is arranged between the position detection plate and the reverse-pushing wallboard.
The device is characterized by further comprising an air source for providing power for a product to be tested and the air cylinder, wherein the air source is connected with an air valve through a pipeline, a mounting strip extending to the position detection plate is arranged on the reverse-push wallboard, a first proximity switch is arranged on the mounting strip, the first proximity switch is connected with a PLC, and the PLC is connected with the air valve.
Furthermore, a limiting hole is formed in the reverse-thrust wall plate, a positioning rod is arranged on the position detection plate, and one end of the positioning rod penetrates through the limiting hole and is in sliding connection with the limiting hole.
And a second proximity switch is further arranged on one side of the fixed plate facing the sliding plate and is connected with the PLC.
Furthermore, a positioning ring is sleeved on the supporting rod, a locking screw penetrating to the supporting rod is screwed on the positioning ring, and an extension spring is arranged between the positioning ring and the sliding plate.
Further be provided with the guide rail in the frame, be provided with on the sample installation wallboard with guide rail complex slider, be provided with adjustment mechanism between sample installation wallboard and the frame.
Further adjustment mechanism is including setting up the fixing base in the frame, be provided with the lead screw between fixing base and the sample installation wallboard, rotate between lead screw and the sample installation wallboard and be connected, the lead screw pass the fixing base and with the fixing base spiro union, the other end that the lead screw corresponds sample installation wallboard is provided with the hand wheel.
Compared with the prior art, the beneficial effects of the utility model are that: the combination and separation of the self-locking sleeve, the guide sleeve, the steel ball and the tappet of the product to be tested are continuously tested by simulating the real use condition so as to detect whether the combination and separation reach the upper limit standard of fatigue.
Drawings
FIG. 1 is a three-dimensional structure diagram of the fatigue testing device for the parking release mechanism of the double-diaphragm disc spring brake chamber of the present invention;
FIG. 2 is a first three-dimensional structure diagram of the present invention with a product to be tested and tested;
FIG. 3 is a second three-dimensional structure diagram of the present invention with a product to be tested and tested;
FIG. 4 is a top view of the present invention with a product to be tested and tested;
FIG. 5 is a schematic cross-sectional view of a product to be tested.
Reference numerals: 1. a frame; 21. a hand wheel; 22. a screw rod; 23. a guide rail; 24. a fixed seat; 25. a support head; 3. a cylinder; 4. a fixing plate; 5. a sliding plate; 6. a support bar; 61. a positioning ring; 62. a locking screw; 63. an extension spring; 7. a separating lever; 8. mounting holes; 9. a through hole; 10. a compression spring; 11. pushing the wallboard backwards; 12. positioning a rod; 13. a position detection plate; 14. mounting a bar; 16. producing a product; 17. installing a wallboard on the sample; 18. a first proximity switch; 19. a second proximity switch; 20. an adjusting rod.
Detailed Description
The embodiment of the fatigue testing device for the parking release mechanism of the double-diaphragm disc spring brake chamber of the present invention will be further described with reference to fig. 1 to 5.
A fatigue test device for a parking release mechanism of a double-diaphragm disc type spring brake chamber comprises a frame 1, wherein a mounting bracket component and a thrust reverser are arranged on the frame 1, the mounting bracket component comprises a sample mounting wall plate 17 and a fixed plate 4, a mounting hole 8 for mounting a product to be tested 16 and a through hole 9 for extending an ejector rod are arranged on the sample mounting wall plate 17, the fixed plate 4 and the thrust reverser are positioned at two sides of the sample mounting wall plate 17, a supporting rod 6 is arranged between the fixed plate 4 and the sample mounting wall plate 17, a sliding plate 5 is connected on the supporting rod 6 in a sliding way, a separating rod 7 is arranged at one side of the sliding plate 5, which faces the sample mounting wall plate 17, an air cylinder 3 for moving the sliding plate 5 is arranged on the fixed plate 4, the thrust reverser comprises a thrust reversing detection plate 11 and a position detection plate 13, and the position detection plate 13, a compression spring 10 is arranged between the position detection plate 13 and the reverse thrust wall plate 11.
As shown in fig. 1, the two support rods 6 are arranged, the two support rods 6 are parallel, a plane formed by the two support rods 6 forms a certain angle with the horizontal plane, as shown in fig. 2 and 3, a product 16 to be tested is placed between the two support rods 6, firstly, the two support rods 6 enhance the stability of the sliding plate 5 and the fixed plate 4, and secondly, the positions of the two support rods 6 facilitate the operation of putting and taking out the product 16 by a worker.
Preferably, a supporting head 25 is arranged on the position detection plate 13 facing the through hole 9, the supporting head 25 is cylindrical, a buffer rubber pad can be arranged in the supporting head 25, and the tappet extends into the supporting head 25 when extending out of the through hole 9 and contacts with the buffer rubber pad to obtain certain buffer.
Before test detection, the sliding plate 5 is moved to one side close to the fixed plate 4, the blocking part of the product 16 is taken down, then the product 16 is fixed on the sample mounting wall plate 17, then the product 16 is connected with an air source through a pipeline, the air source can be accessed from the outside or placed on the rack 1, and the pipeline is also provided with a reversing valve or other structures for inflating or deflating the product 16 (the air source is used for inflating and deflating the cylinder 3 or the product 16, which is the prior art, and the applicant does not need to describe any more herein); before detection, the front cavity of the parking brake chamber is in a pressure relief state; the release disc assembly is separated from the tappet;
as shown in fig. 5, the product 16 includes, in order from left to right, a-pusher tray cavity; B. a service brake chamber; C. a parking brake front cavity; D. four chambers of a parking brake rear cavity, PLC captures a signal from a starting button or a rising edge of a first proximity switch 18 to send a command to charge the front cavity of the parking brake chamber, a rear cavity leather diaphragm drives a release disc assembly to move rightwards until steel balls in the release disc assembly enter a ball groove of a tappet, the release disc assembly and the tappet are integrated under the action of a self-locking sleeve, as the release disc assembly drives a separation rod 7 to push a sliding plate 5 to move rightwards to a second proximity switch 19 position, the PLC controls an electromagnetic valve to release the pressure of the front cavity of the parking brake chamber after acquiring the second proximity switch 19 position information, the rear cavity leather diaphragm and the release disc assembly drive the tappet to move leftwards under the action of a strong spring, the tappet extends out of a through hole 9 to act on a push rod disc assembly, a position detection plate 13 moves leftwards away from the first proximity switch 18, the PLC captures a falling edge signal of the first proximity switch 18, the PLC sends a signal after delay to charge the electromagnetic valve to The release disc component is separated from the tappet, the rear air cylinder 3 is reset, the release disc component is maintained at the leftmost position under the action of a strong spring, the tappet moves to the rightmost end under the action of a push rod spring in a cavity of the push rod disc and a compression spring 10 on a position detection plate 13, and a product 16 parking release mechanism completes one-time separation cycle; the PLC captures the first proximity switch 18 again, counts the signals, sends the electromagnetic valve again to charge the front cavity of the parking brake chamber, and repeats the steps to the set number of times (according to the number of fatigue detection times required by the actual requirement) of the PLC.
The piston of the cylinder 3 is not directly fixed with the sliding plate 5, the separating rod 7 and the sliding plate 5 are always in contact with the self-locking sleeve under the action of the small tension spring, when the piston of the cylinder 3 is reset, the tappet moves to the rightmost end, the separating rod 7 and the sliding plate 5 move rightwards under the pushing of the rightmost moving release disc component, wherein the resistance of the separating rod 7 and the sliding plate 5 to the self-locking sleeve is small, and the combination of the release disc and the tappet cannot be influenced.
When the parking release mechanism fails, the release disc assembly and the tappet cannot be separated, and the release disc assembly and the tappet cannot be combined after being separated.
When the release disc assembly and the tappet cannot be separated, the rear cavity leather membrane and the release disc assembly drive the tappet to move left under the action of a strong spring and keep at a left position, under the action of the air cylinder 3, the separating rod 7 acts on the self-locking sleeve thrust force and cannot enable the self-locking sleeve to move, the tappet is still combined with the release disc assembly into a whole, a push rod (the push rod is a part which is coaxially connected with the tappet and is positioned at the position of a push rod disc cavity) of the brake chamber push rod disc assembly is in a push-out state, the position detection plate 13 is not at the position of the first proximity switch 18, and the PLC cannot receive the signal of the first proximity switch 18, so that an inflation instruction of the brake chamber parking;
when the release disc assembly and the tappet cannot be combined after being separated, after the air is filled in the front cavity of the parking brake chamber, the release disc assembly moves rightwards, the front cavity of the parking brake chamber is decompressed, at the moment, because the tappet and the release disc assembly are not combined into a whole, only the release disc assembly moves leftwards under the action of a strong spring, but the tappet keeps still, namely the tappet does not extend out of the through hole 9 and pushes the position detection plate 13 through an ejector rod of the push disc assembly, the position detection plate 13 keeps at the position of the first proximity switch 18, and the PLC does not send a next-step instruction due to the fact that a falling edge signal of the first proximity switch 18 cannot be received;
when the two failure conditions occur, the PLC stops counting and gives an alarm to a worker to judge that the product 16 is unqualified according to PLC alarm information.
The test device further comprises an air source for providing power for a product 16 to be tested and the air cylinder 3, the air source is connected with an air valve through a pipeline, a mounting strip 14 extending to the position detection plate 13 is arranged on the reverse-push wallboard 11, a first proximity switch 18 is arranged on the mounting strip 14, the first proximity switch 18 is connected with a PLC, the PLC is connected with the air valve, and the PLC is AFP7HSC2T produced by Panasonic Industrial Automation Sales in the embodiment.
Preferably, a second proximity switch 19 is arranged on one side of the fixed plate 4 facing the sliding plate 5, the second proximity switch 19 is connected with the PLC, a positioning ring 61 is sleeved on the supporting rod 6, a locking screw 62 penetrating through the supporting rod 6 is screwed on the positioning ring 61, and an extension spring 63 is arranged between the positioning ring 61 and the sliding plate 5.
As shown in fig. 4 and 5, before the detection test is started, the first proximity switch 18 faces the position detection plate 13, the product 16 is inflated to the front cavity of the parking brake chamber, the disc assembly is released to move right while the separation rod 7 is pushed to drive the sliding plate 5 to move right until stopping at a certain position on the right side, and the second proximity switch 19 is adjusted to enable the second proximity switch 19 to be fixed to the sliding plate 5 (for a product 16, the first proximity switch 18 and the second proximity switch 19 are fixed in position, and for different models of products 16, an adjusting rod 20 is arranged between the second proximity switch 19 and the fixed plate 4 to adjust the distance between the second proximity switch 19 and the fixed plate 4, namely, the position of the second proximity switch 19 is changed).
After the detection test is started, the PLC controls the air valve to inflate the product 16, the PLC pushes the separating rod 7 and the sliding plate 5 to move rightwards along with the combination of the front cavity inflation releasing disc component of the parking brake chamber and the tappet rod, after the second proximity switch 19 detects the sliding plate 5, the PLC acquires the information of the second proximity switch 19 and then sends a signal to control the air valve to deflate the product 16, the tappet rod extends out of the through hole 9 and pushes the position detection plate 13 to leave the position of the first proximity switch 18 through the ejector rod of the push rod disc component, the PLC starts timing after acquiring the descending edge information of the first proximity switch 18, the timing is finished, the PLC controls the air valve to enable the air cylinder 3 to act, the self-locking sleeve of the detected product 16 is acted through the separating rod 7 to separate the releasing disc component from the tappet rod, then the air cylinder 3 is reset, the tappet rod moves rightwards under the action, and finishing one-time cycle counting, controlling the air valve again to inflate the front cavity of the parking brake chamber, and repeating the process.
When the failure condition occurs and the release disc and the tappet can not be separated, after the PLC acquires the information of the first proximity switch 18 for timing, the PLC can not receive the rising edge signal of the first proximity switch 18 and can not send a parking chamber inflation instruction to the brake chamber any more, and the test is automatically terminated;
when the condition that the release disc and the tappet cannot be combined occurs, when the product 16 is inflated and deflated, the release disc assembly acts, the tappet does not act, the position detection plate 13 is kept at the position of the first proximity switch 18, the PLC does not send a next command any more because the PLC cannot receive a falling edge signal of the first proximity switch 18, and the test is automatically terminated;
this embodiment is preferred reverse-push wallboard 11 is last to have seted up spacing hole, be provided with locating lever 12 on the position detection board 13, locating lever 12 one end pass spacing hole and with spacing hole sliding connection, locating lever 12 slides in the spacing hole of reverse-push wallboard 11 for position detection board 13 can be stable slide along locating lever 12 direction, makes first proximity switch 18 detect accurately.
This embodiment is preferred be provided with guide rail 23 in the frame 1, be provided with on the sample installation wallboard 17 with guide rail 23 complex slider, be provided with adjustment mechanism between sample installation wallboard 17 and the frame 1, just adjustment mechanism is including setting up the fixing base 24 on the frame 1, be provided with lead screw 22 between fixing base 24 and the sample installation wallboard 17, rotate between lead screw 22 and the sample installation wallboard 17 and be connected, lead screw 22 pass fixing base 24 and with the 24 spiro union of fixing base, the other end that lead screw 22 corresponds sample installation wallboard 17 is provided with hand wheel 21.
When the models of the products 16 to be tested are different, the sizes and the extending lengths of the tappets are different, the sample mounting wall plate 17 can be close to or far away from the position detection plate 13 of the reverse pushing mechanism through the screw rod 22 by rotating the hand wheel 21, so that the tappets can be ensured to smoothly contact and push the position detection plate 13 to leave the first proximity switch 18, and the position detection plate 13 cannot be impacted on the reverse pushing wall plate 11.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a two diaphragm disc spring brake room parking release mechanism fatigue test equipment which characterized in that: the test device comprises a frame, be provided with installing support part and thrust reverser in the frame, the installing support part includes sample installation wallboard and fixed plate, sets up the mounting hole that supplies the installation of waiting to test product on the sample installation wallboard and supplies the through-hole that the ejector pin stretches out, fixed plate and thrust reverser are located the both sides of sample installation wallboard, be provided with the bracing piece between fixed plate and the sample installation wallboard, sliding connection has the sliding plate on the bracing piece, the sliding plate is provided with the release lever towards sample installation wallboard one side, be provided with the cylinder that makes the sliding plate move on the fixed plate, thrust reverser includes thrust reverser wallboard and position pick-up plate, and the position pick-up plate is just to the through-hole of sample installation wallboard, be provided with compression spring between position pick-up plate and.
2. The double diaphragm disc spring brake chamber parking release mechanism fatigue test apparatus of claim 1, characterized in that: still include for waiting to test product and cylinder provide the air supply of power, the air supply has the pneumatic valve through the pipe connection, be provided with the mounting bar that extends to the position detection board on the backstepping wallboard, be provided with first proximity switch on the mounting bar, first proximity switch is connected with PLC, PLC connects the pneumatic valve.
3. The double diaphragm disc spring brake chamber parking release mechanism fatigue test apparatus of claim 2, characterized in that: spacing holes are formed in the reverse-push wall plate, a positioning rod is arranged on the position detection plate, and one end of the positioning rod penetrates through the spacing holes and is in sliding connection with the spacing holes.
4. The double diaphragm disc spring brake chamber parking release mechanism fatigue test apparatus of claim 3, characterized in that: and one side of the fixed plate, which faces the sliding plate, is provided with a second proximity switch, and the second proximity switch is connected with the PLC.
5. The double diaphragm disc spring brake chamber parking release mechanism fatigue test apparatus of claim 4, wherein: the support rod is sleeved with a positioning ring, a locking screw penetrating through the support rod is screwed on the positioning ring, and an extension spring is arranged between the positioning ring and the sliding plate.
6. The double diaphragm disc spring brake chamber parking release mechanism fatigue test apparatus of claim 5, characterized in that: the rack is provided with a guide rail, the sample installation wallboard is provided with a slide block matched with the guide rail, and an adjusting mechanism is arranged between the sample installation wallboard and the rack.
7. The double diaphragm disc spring brake chamber parking release mechanism fatigue test apparatus of claim 6, wherein: the adjusting mechanism comprises a fixed seat arranged on the rack, a lead screw is arranged between the fixed seat and the sample installation wallboard, the lead screw is rotatably connected with the sample installation wallboard, the lead screw penetrates through the fixed seat and is in threaded connection with the fixed seat, and a hand wheel is arranged at the other end of the lead screw, corresponding to the sample installation wallboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920794373.9U CN209910958U (en) | 2019-05-29 | 2019-05-29 | Fatigue test equipment for parking release mechanism of double-diaphragm disc type spring brake chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920794373.9U CN209910958U (en) | 2019-05-29 | 2019-05-29 | Fatigue test equipment for parking release mechanism of double-diaphragm disc type spring brake chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209910958U true CN209910958U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920794373.9U Active CN209910958U (en) | 2019-05-29 | 2019-05-29 | Fatigue test equipment for parking release mechanism of double-diaphragm disc type spring brake chamber |
Country Status (1)
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|---|---|
| CN (1) | CN209910958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118650A (en) * | 2019-05-29 | 2019-08-13 | 嘉兴盛鼎机械有限公司 | Double diaphragm disc spring arrester parking releasing mechanism fatigue rigs |
-
2019
- 2019-05-29 CN CN201920794373.9U patent/CN209910958U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118650A (en) * | 2019-05-29 | 2019-08-13 | 嘉兴盛鼎机械有限公司 | Double diaphragm disc spring arrester parking releasing mechanism fatigue rigs |
| CN110118650B (en) * | 2019-05-29 | 2024-04-12 | 嘉兴盛鼎机械有限公司 | Fatigue test equipment for parking release mechanism of double-diaphragm disc spring brake chamber |
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