CN113933170A - Steel plate spring stiffness testing device - Google Patents
Steel plate spring stiffness testing device Download PDFInfo
- Publication number
- CN113933170A CN113933170A CN202111191751.2A CN202111191751A CN113933170A CN 113933170 A CN113933170 A CN 113933170A CN 202111191751 A CN202111191751 A CN 202111191751A CN 113933170 A CN113933170 A CN 113933170A
- Authority
- CN
- China
- Prior art keywords
- plate
- fixed
- rod
- spring
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Aviation & Aerospace Engineering (AREA)
- Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a steel plate spring stiffness testing device, which relates to the technical field of vehicle steel plate spring detection and comprises a fixed plate and a dynamic stiffness testing mechanism, wherein the dynamic stiffness testing mechanism is positioned at the top of the fixed plate, auxiliary spring supports are fixedly arranged on two sides of the front surface of the fixed plate, a steel plate spring body is placed at the tops of the two auxiliary spring supports, a fixed assembly is rotatably arranged at the bottom end of a thrust rod in the dynamic stiffness testing mechanism, an upper transmission assembly is rotatably arranged on the left side of the bottom of a top plate in the dynamic stiffness testing mechanism, and a lower transmission assembly is rotatably arranged on the left side of the back of the fixed plate. According to the invention, the positioning of the leaf spring body can be automatically completed in the process that the fixing assembly descends to the top of the leaf spring body, the manual complex operation is not needed, the dismounting efficiency of the leaf spring body is effectively improved, the overall testing efficiency is further improved, and the influence on the production rhythm of an enterprise due to low quality inspection efficiency is avoided.
Description
Technical Field
The invention relates to the technical field of vehicle leaf spring detection, in particular to a leaf spring rigidity testing device.
Background
The steel plate spring assembly generally consists of a single plate spring or a plurality of plate springs, can bear vertical load during work, can bear transverse and longitudinal loads, and is used as a guide mechanism. Static stiffness refers to the ability to resist deformation under static load, and dynamic stiffness refers to the ability to resist deformation under dynamic load, i.e., the dynamic force required per unit amplitude. Generally, the stiffness of a leaf spring suspension system is equal to the stiffness of a leaf spring, so that only the stiffness of the leaf spring is usually considered, but influence factors after actual assembly are not considered, for example, in actual vehicle assembly, in order to enable an automobile to have a tendency of understeer, a large height difference exists between front and rear eye tabs of the leaf spring, and a certain angle is formed between the central line of the front and rear eye tabs of the leaf spring and a horizontal line, so that the stiffness of the leaf spring and the stiffness of the leaf spring have a certain difference.
The patent application publication No. CN 106556499B, which is an issued invention, discloses a steel plate spring stiffness testing device, comprising: the fixing frame comprises a fixing frame body, a plate spring is obliquely fixed on the fixing frame body, and the plate spring is fixed on a fixing seat arranged at the top of the plate spring in a matched manner through a riding bolt in the middle; the bottom end of the thrust rod is rotatably connected with the fixed seat; a pressure sensor provided at a tip end of the thrust rod; and the vibration exciter is connected with the thrust rod through the pressure sensor. According to the scheme, loads with certain amplitude and frequency are input through a vibration exciter according to needs, the height of the leaf spring is inconsistent when the left and right sides of the leaf spring are fixed so as to simulate the dynamic load condition, a thrust rod acts on a steel plate spring assembly, a pressure sensor records the loads, the deformation quantity of the leaf spring under the fixed loads is measured, a characteristic curve of the stiffness of the leaf spring under the loading and unloading states is further drawn, and then the dynamic stiffness of the leaf spring is sorted out according to a specified method.
But the research personnel in this area discover it still has some shortcomings after carrying out the in-service use to above-mentioned device, it is comparatively obvious be for effectively testing to leaf spring, it needs to fix the leaf spring that is in the tilt state, fixed mode includes utilizing two vice spring bracket to bear leaf spring, cup joint leaf spring left end on left lug support, cup joint leaf spring right-hand member on right lug support and be connected horse-riding bolt and fixing base, when the operation is comparatively loaded down with trivial details, still need consume more time, follow-up when dismantling simultaneously, still need reverse above-mentioned operation of repetition, actual test efficiency is too low, the production rhythm of enterprise has seriously been influenced.
Therefore, it is necessary to invent a steel plate spring stiffness testing device to solve the above problems.
Disclosure of Invention
The invention aims to provide a steel plate spring stiffness testing device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a steel plate spring stiffness testing device comprises a fixed plate and a dynamic stiffness testing mechanism, wherein the dynamic stiffness testing mechanism is positioned at the top of the fixed plate, auxiliary spring supports are fixedly arranged on two sides of the front of the fixed plate, a steel plate spring body is placed at the tops of the two auxiliary spring supports, a fixed component is rotatably arranged at the bottom end of a thrust rod in the dynamic stiffness testing mechanism, an upper transmission component is rotatably arranged on the left side of the bottom of a top plate in the dynamic stiffness testing mechanism, a lower transmission component is rotatably arranged on the left side of the back of the fixed plate, the upper transmission component is in transmission connection with the lower transmission component, a movable support component is fixedly arranged on the right side of a sliding sleeve in the lower transmission component, a trigger mechanism is fixedly arranged at the top of a threaded sleeve in the lower transmission component, and when a lifting plate in the dynamic stiffness testing mechanism descends, a rack in the upper transmission component is driven to synchronously descend, and then make the gear among the lower drive assembly drive the second screw rod and take place to rotate, the screw thread lantern ring among the lower drive assembly this moment drives movable support subassembly and trigger mechanism and removes to the direction that is close to the fixed plate, when the lifter plate descending distance reaches first threshold value, first bracket pole among the movable support subassembly and second bracket pole pass the fixed plate and enter into the locating hole at leaf spring body both ends under the drive of sliding sleeve, fix a position the leaf spring body, when the lifter plate descending distance reaches the second threshold value, the accommodation hole cup joints the outside of riding a horse bolt at leaf spring body top, the trigger push pedal among the trigger mechanism promotes the intermediate lever among the fixed subassembly under the drive of the screw thread lantern ring simultaneously, make the arc cardboard to ride a horse bolt's top on the leaf spring body and carry out the chucking.
Preferably, dynamic stiffness test mechanism includes roof, pneumatic cylinder, vibration exciter, pressure sensor, lifter plate and distance rod, the pneumatic cylinder is fixed to be set up in the roof top and its output shaft runs through the roof top and extends to roof bottom and vibration exciter fixed connection, pressure sensor is fixed to be set up in the vibration exciter bottom, the lifter plate is fixed to be set up in the pressure sensor bottom, the distance rod rotates to set up in lifter plate bottom right side.
Preferably, the fixing component comprises a fixing seat, a containing hole, a middle slide way, side slide ways, a middle rod, a first spring, side rods and arc-shaped clamping plates, the fixing seat is rotatably connected with the bottom end of the thrust rod, the containing hole, the side slide ways, the side rods and the arc-shaped clamping plates are respectively provided with four, the four containing holes are respectively arranged at four corners of the bottom of the fixing seat, the middle slide ways are arranged in the fixing seat, the openings of the middle slide ways extend to the middle of the back surface of the fixing seat, the four side slide ways are respectively arranged on two side walls of the middle slide way, the middle rod is arranged in the middle slide way in a sliding manner, one end of the first spring is fixedly connected with the middle rod, the other end of the first spring is fixedly connected with the inner wall of the middle slide way, the four side rods are respectively arranged in the inner sides of the four side slide ways in a sliding manner and are respectively fixedly connected with the middle rod, and the four arc-shaped clamping plates are respectively positioned in the four containing holes, and are respectively fixedly connected with the four side rods.
Preferably, go up transmission assembly and include lifter and rack, the lifter is fixed to be set up in lifter bottom left side, the rack is fixed to be set up in lifter right side bottom.
Preferably, the lower transmission assembly comprises a second screw rod, a gear, a threaded sleeve ring, an elastic component and a sliding sleeve, the second screw rod is rotatably connected with the fixing plate through a bearing, the gear is slidably arranged at the rear end of the second screw rod and meshed with the rack, the threaded sleeve ring is sleeved on the outer side of the second screw rod and in threaded connection with the second screw rod, the elastic component and the sliding sleeve are slidably sleeved on the outer side of the second screw rod, and one end of the elastic component is fixedly connected with the threaded sleeve ring, while the other end of the elastic component is fixedly connected with the sliding sleeve.
Preferably, the movable support assembly comprises a back plate, a first support rod, a movable plate and a second support rod, the back plate is fixedly arranged on the right side of the sliding sleeve, the first support rod is fixedly arranged on the left side of the front face of the back plate, the movable plate is rotatably arranged on the right side of the front face of the back plate, and the second support rod is fixedly arranged at the bottom of the front face of the movable plate.
Preferably, the trigger mechanism comprises an L-shaped connecting rod and a trigger push plate, the L-shaped connecting rod is fixedly arranged at the top of the threaded sleeve ring, the trigger push plate is fixedly arranged at the end part of the L-shaped connecting rod, and the trigger push plate is positioned at the rear side of the fixed component.
Preferably, the elastic component comprises a second spring, an inner sliding shell, an outer sliding shell, a telescopic rod, a connecting plate, a sliding chute, a sliding block, a third spring and a connecting pipe, the second spring is sleeved outside the second screw rod, one end of the second spring is fixedly connected with the inner sliding shell, the other end of the second spring is fixedly connected with the outer sliding shell, the inner sliding shell and the outer sliding shell are respectively sleeved at two ends of the outer side of the second spring, the inner sliding shell is slidably arranged inside the outer sliding shell, the inner sliding shell is fixedly connected with a threaded lantern ring, the outer sliding shell is fixedly connected with a sliding sleeve, the telescopic rod is fixedly arranged at the right side of the inner sliding shell, the connecting plate is fixedly connected with the end part of the telescopic rod, the sliding chute is arranged on the second screw rod, the sliding block is slidably arranged inside the sliding chute and fixedly connected with a gear, one end of the third spring is fixedly connected with the sliding block, and the other end of the third spring is fixedly connected with the inner wall of the sliding chute, the connecting pipe cup joints and sets up in the second screw rod outside and with gear fixed connection, the connecting plate rotates through the bearing to cup joint and sets up in the connecting pipe outside.
The invention has the technical effects and advantages that:
the device is provided with a fixed component, an upper transmission component, a lower transmission component, a movable support component and a trigger mechanism, so that when a lifting plate in a dynamic stiffness testing mechanism descends, a rack in the upper transmission component is driven to descend synchronously, a second screw rod in the lower transmission component is further driven to rotate, a threaded lantern ring in the lower transmission component drives the movable support component and the trigger mechanism to move towards a direction close to a fixed plate, when the descending distance of the lifting plate reaches a first threshold value, a first support rod and a second support rod in the movable support component penetrate through the fixed plate and enter positioning holes at two ends of a steel plate spring body under the driving of a sliding sleeve to position the steel plate spring body, when the descending distance of the lifting plate reaches a second threshold value, a containing hole in the fixed component is sleeved on the outer side of a horse riding bolt at the top of the steel plate spring body, and a trigger push plate in the trigger mechanism pushes an intermediate rod in the fixed component under the driving of the threaded lantern ring at the same time The arc-shaped clamping plate clamps the top of the horseshoe bolt on the leaf spring body, and compared with devices of the same type in the prior art, the arc-shaped clamping plate can automatically complete the positioning of the leaf spring body in the process that the fixed assembly descends to the top of the leaf spring body, does not need manual complex operation, effectively improves the dismounting efficiency of the leaf spring body, further improves the overall testing efficiency, and avoids influencing the production rhythm of enterprises due to low quality inspection efficiency.
Drawings
Fig. 1 is a schematic overall front view structure of the present invention.
Fig. 2 is a schematic bottom sectional view of the fixing assembly of the present invention.
Fig. 3 is a front view of the upper transmission assembly of the present invention.
FIG. 4 is a top view of the lower drive assembly, the movable bracket assembly and the trigger mechanism of the present invention.
Fig. 5 is a front view of the movable bracket assembly of the present invention.
FIG. 6 is a schematic top sectional view of an elastic member according to the present invention.
In the figure: 1. a fixing plate; 11. a secondary spring support; 12. a leaf spring body; 2. a dynamic stiffness testing mechanism; 21. a top plate; 22. a hydraulic cylinder; 23. a vibration exciter; 24. a pressure sensor; 25. a lifting plate; 26. a thrust rod; 3. a fixing assembly; 31. a fixed seat; 32. an accommodation hole; 33. a middle slideway; 34. a side slide; 35. an intermediate lever; 36. a first spring; 37. a side lever; 38. an arc-shaped clamping plate; 4. an upper transmission assembly; 41. a lifting rod; 42. a rack; 5. a lower transmission assembly; 51. a second screw; 52. a gear; 53. a threaded collar; 54. an elastic member; 55. a sliding sleeve; 541. a second spring; 542. an inner slide housing; 543. an outer slide housing; 544. a telescopic rod; 545. a connecting plate; 546. a chute; 547. a slider; 548. a third spring; 549. a connecting pipe; 6. a movable bracket assembly; 61. a back plate; 62. a first frame bar; 63. a movable plate; 64. a second rack bar; 7. a trigger mechanism; 71. an L-shaped connecting rod; 72. the push plate is triggered.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a steel plate spring stiffness testing device as shown in figures 1-6, which comprises a fixed plate 1 and a dynamic stiffness testing mechanism 2, wherein the dynamic stiffness testing mechanism 2 is positioned at the top of the fixed plate 1, auxiliary spring supports 11 are fixedly arranged on both sides of the front surface of the fixed plate 1, a steel plate spring body 12 is arranged on the tops of the two auxiliary spring supports 11, a fixed component 3 is rotatably arranged at the bottom end of a thrust rod 26 in the dynamic stiffness testing mechanism 2, an upper transmission component 4 is rotatably arranged on the left side of the bottom of a top plate 21 in the dynamic stiffness testing mechanism 2, a lower transmission component 5 is rotatably arranged on the left side of the back of the fixed plate 1, the upper transmission component 4 is in transmission connection with the lower transmission component 5, a movable support component 6 is fixedly arranged on the right side of a sliding sleeve 55 in the lower transmission component 5, a trigger mechanism 7 is fixedly arranged on the top of a threaded sleeve 53 in the lower transmission component 5, when the lifting plate 25 in the dynamic stiffness testing mechanism 2 descends, the rack 42 in the upper transmission assembly 4 is driven to descend synchronously, so that the gear 52 in the lower transmission assembly 5 drives the second screw 51 to rotate, at this time, the threaded sleeve ring 53 in the lower transmission assembly 5 drives the movable bracket assembly 6 and the trigger mechanism 7 to move towards the direction close to the fixed plate 1, when the descending distance of the lifting plate 25 reaches a first threshold value, the first bracket rod 62 and the second bracket rod 64 in the movable bracket assembly 6 penetrate through the fixed plate 1 under the driving of the sliding sleeve 55 and enter the positioning holes at the two ends of the steel plate spring body 12 to position the steel plate spring body 12, when the descending distance of the lifting plate 25 reaches a second threshold value, the accommodating hole 32 in the fixed assembly 3 is sleeved on the outer side of the saddle bolt at the top of the steel plate spring body 12, and simultaneously the trigger push plate 72 in the trigger mechanism 7 is driven by the threaded sleeve ring 53 to push the intermediate rod 35 in the fixed assembly 3, so that the arc-shaped catch plate 38 grips the top of the saddle bolt on the leaf spring body 12.
It should be further noted that the vibration exciter 23 and the pressure sensor 24 in the dynamic stiffness testing mechanism 2 both belong to the technologies already disclosed in the prior art, and do not belong to the necessary technical features of the present application, so detailed descriptions of specific structures and models thereof are not provided herein.
As shown in fig. 1, the dynamic stiffness testing mechanism 2 includes a top plate 21, a hydraulic cylinder 22, an exciter 23, a pressure sensor 24, a lifting plate 25, and a thrust rod 26.
More specifically, the hydraulic cylinder 22 is fixedly disposed on the top of the top plate 21, an output shaft of the hydraulic cylinder passes through the top of the top plate 21 and extends to the bottom of the top plate 21 to be fixedly connected with the vibration exciter 23, the pressure sensor 24 is fixedly disposed on the bottom of the vibration exciter 23, the lifting plate 25 is fixedly disposed on the bottom of the pressure sensor 24, the thrust rod 26 is rotatably disposed on the right side of the bottom of the lifting plate 25, so that the steel plate spring body 12 is placed on the tops of the secondary spring brackets 11 on both sides of the front surface of the fixing plate 1, the two secondary spring brackets 11 carry and primarily limit the steel plate spring body 12, the hydraulic cylinder 22 drives the output shaft to extend, the output shaft of the hydraulic cylinder 22 drives the vibration exciter 23, the pressure sensor 24, the lifting plate 25, the thrust rod 26 and the fixing assembly 3 to synchronously descend, at this time, the fixing assembly 3 is pressed on the top of the steel plate spring body 12, and after the vibration exciter 23 is started, the vibration exciter 23 generates a load with a certain amplitude and frequency, acts on the leaf spring body 12 through the thrust rod 26, records the load, draws a change characteristic curve of the stiffness of the leaf spring body 12 under a dynamic load condition by measuring the corresponding relation between the deformation quantity of the leaf spring body 12 after the load is applied and the load, and then arranges the dynamic stiffness of the leaf spring body 12 according to a specified method.
As shown in fig. 2, the fixing assembly 3 includes a fixing seat 31, a receiving hole 32, a middle slide 33, a side slide 34, a middle rod 35, a first spring 36, a side rod 37 and an arc-shaped catch plate 38.
More specifically, the fixed seat 31 is rotatably connected to the bottom end of the thrust rod 26, four receiving holes 32, four side slideways 34, four side rods 37 and four arc-shaped snap-gauge plates 38 are provided, four of the receiving holes 32 are respectively opened at four corners of the bottom of the fixed seat 31, the middle slideway 33 is opened inside the fixed seat 31, and an opening thereof extends to the middle portion of the back surface of the fixed seat 31, four of the side slideways 34 are respectively opened on two side walls of the middle slideway 33, the middle rod 35 is slidably provided inside the middle slideway 33, one end of the first spring 36 is fixedly connected to the middle rod 35 and the other end is fixedly connected to an inner wall of the middle slideway 33, four of the side rods 37 are respectively slidably provided inside the four side slideways 34 and are respectively fixedly connected to the middle rod 35, four of the arc-shaped snap-gauge plates 38 are respectively located inside the four receiving holes 32 and are respectively fixedly connected to the four side rods 37, so that when the middle rod 35 is pushed forward, the intermediate lever 35 drives four arc-shaped clamping plates 38 through four side levers 37 to move inside the four accommodating holes 32, so that the four arc-shaped clamping plates 38 can be respectively wrapped outside two ends of the riding bolt, and simultaneously, when the intermediate lever 35 is not pushed any more, the intermediate lever 35 automatically drives the side levers 37 and the arc-shaped clamping plates 38 to reset under the elastic force of the first spring 36, so that the limitation on the riding bolt is relieved.
As shown in fig. 3, the upper driving assembly 4 includes a lifting rod 41 and a rack 42.
More specifically, the lifting rod 41 is fixedly disposed at the left side of the bottom of the lifting plate 25, and the rack 42 is fixedly disposed at the bottom of the right side of the lifting rod 41, so that when the lifting rod 41 drives the rack 42 to descend, it can drive the second screw 51 to rotate through the gear 52 in the lower transmission assembly 5.
As shown in fig. 4, the lower transmission assembly 5 includes a second screw 51, a gear 52, a threaded collar 53, an elastic member 54, and a sliding sleeve 55.
More specifically, the second screw 51 is rotatably connected to the fixing plate 1 through a bearing, the gear 52 is slidably disposed at the rear end of the second screw 51 and engaged with the rack 42, the threaded collar 53 is sleeved on the outer side of the second screw 51 and in threaded connection with the second screw 51, the elastic member 54 and the sliding sleeve 55 are slidably sleeved on the outer side of the second screw 51, and one end of the elastic member 54 is fixedly connected to the threaded collar 53 and the other end is fixedly connected to the sliding sleeve 55, so that when the second screw 51 rotates, the movable support assembly 6 and the trigger mechanism 7 can be driven by the threaded collar 53 and the sliding sleeve 55.
Meanwhile, the movable bracket assembly 6 includes a back plate 61, a first bracket bar 62, a movable plate 63, and a second bracket bar 64.
More specifically, the back plate 61 is fixedly disposed on the right side of the sliding sleeve 55, the first support rod 62 is fixedly disposed on the left side of the front surface of the back plate 61, the movable plate 63 is rotatably disposed on the right side of the front surface of the back plate 61, and the second support rod 64 is fixedly disposed at the bottom of the front surface of the movable plate 63, so that under the driving of the sliding sleeve 55, the back plate 61 drives the first support rod 62 and the second support rod 64 to penetrate through the fixing plate 1 and enter the positioning holes at the two ends of the leaf spring body 12 respectively, so as to position the leaf spring body 12.
In addition, the trigger mechanism 7 includes an L-shaped connecting rod 71 and a trigger push plate 72.
More specifically, L shape connecting rod 71 is fixed to be set up in the screw thread lantern ring 53 top, trigger push pedal 72 is fixed to be set up in L shape connecting rod 71 tip, trigger push pedal 72 is located fixed subassembly 3 rear side to under the drive of screw thread lantern ring 53, trigger push pedal 72 is to the direction removal that is close to fixed plate 1, and then promotes intermediate lever 35 in the fixed subassembly 3.
Example 2
Different from the above embodiment, after practical research by a person skilled in the art, it is found that, in the process of actually testing the plate spring by the above device, when the plate spring is broken due to a quality failure, the lifting plate 25 may drive the upper transmission component 4 to excessively descend, and at this time, the gear 52 may drive the trigger mechanism 7 to excessively push the fixed component 3, so that the side rod 37 and the arc-shaped clamping plate 38 are damaged and deformed, as shown in fig. 6:
the present invention provides that the elastic member 54 includes a second spring 541, an inner slide case 542, an outer slide case 543, an expansion link 544, a connecting plate 545, a chute 546, a slider 547, a third spring 548 and a connecting tube 549.
More specifically, the second spring 541 is sleeved outside the second screw 51, and one end thereof is fixedly connected to the inner sliding housing 542 and the other end thereof is fixedly connected to the outer sliding housing 543, the inner sliding housing 542 and the outer sliding housing 543 are respectively sleeved outside two ends of the second spring 541, and the inner sliding housing 542 is slidably arranged inside the outer sliding housing 543, the inner sliding housing 542 is fixedly connected to the threaded collar 53, the outer sliding housing 543 is fixedly connected to the sliding sleeve 55, the expansion link 544 is fixedly arranged on the right side of the inner sliding housing 542, the connecting plate 545 is fixedly connected to the end of the expansion link 544, the chute 546 is arranged on the second screw 51, the slider 547 is slidably arranged inside the chute 546 and is fixedly connected to the gear 52, one end of the third spring 548 is fixedly connected to the slider 547 and the other end thereof is fixedly connected to the inner wall of the chute 546, the connecting pipe 549 is sleeved on the outer side of the second screw 51 and is fixedly connected with the gear 52, and the connecting plate 545 is rotatably sleeved on the outer side of the connecting pipe 549 through a bearing.
As can be seen from the above, when the hydraulic cylinder 22 drives the lifting plate 25 to descend excessively due to the breakage of the plate spring, at this time, the second screw 51 is driven by the gear 52 to rotate continuously, so that the threaded collar 53 pushes the inner sliding housing 542, when the threaded collar 53 drives the triggering mechanism 7 to trigger the fixing component 3, the telescopic rod 544 is already extended to the maximum state, therefore, as the inner slide case 542 continues to move inside the outer slide case 543, the expansion link 544 pulls the slide groove 546 through the connecting plate 545, and at this time, the slide groove 546 pulls the gear 52, due to the arrangement of the sliding block 547, the gear 52 drives the sliding block 547 to slide in the sliding slot 546 toward the direction close to the fixing plate 1, and further, the gear is separated from the rack 42, transmission does not occur any more, and therefore the second screw 51 is not driven to rotate any more, and the excessive triggering of the fixing component 3 by the triggering mechanism 7 due to the fact that the gear 52 excessively drives the second screw 51 to rotate is avoided.
The working principle of the invention is as follows:
in the actual use process, the hydraulic cylinder 22 is in a shortened state at this time, a technician can place the leaf spring body 12 on the tops of the auxiliary spring supports 11 on the two sides of the front surface of the fixed plate 1, and the two auxiliary spring supports 11 bear and primarily limit the leaf spring body 12;
at this time, a technician can enable the hydraulic cylinder 22 to drive an output shaft of the hydraulic cylinder 22 to extend out, and the output shaft of the hydraulic cylinder 22 extends out to drive the vibration exciter 23, the pressure sensor 24, the lifting plate 25, the thrust rod 26 and the fixing assembly 3 to synchronously descend;
in the process of descending the lifting plate 25, when the descending distance of the lifting plate 25 reaches a first threshold value, the lifting plate 25 drives the rack 42 to descend through the lifting rod 41, the rack 42 drives the gear 52 to rotate when descending, the gear 52 drives the threaded collar 53 to move in the direction of approaching the fixing plate 1 at the outer side thereof when rotating, meanwhile, the threaded collar 53 pushes the sliding sleeve 55 through the elastic member 54 when moving, so that the sliding sleeve 55 drives the first support rod 62 and the second support rod 64 to penetrate through the fixing plate 1 through the back plate 61 and respectively enter the positioning holes at the two ends of the steel plate spring body 12 to position the steel plate spring body 12, and at the moment, the sliding sleeve 55 is attached to the fixing plate 1;
with the continuous descending of the lifting plate 25, the threaded sleeve ring 53 continues to move, the sliding sleeve 55 does not move any more, the elastic member 54 is compressed, when the descending distance of the lifting plate 25 reaches a second threshold value, the accommodating hole 32 is sleeved on the outer side of the saddle bolt at the top of the steel plate spring body 12, and the push plate 72 is triggered to push the intermediate rod 35 in the fixing component 3 under the driving of the threaded sleeve ring 53, so that the arc-shaped clamping plate 38 clamps the top of the saddle bolt on the steel plate spring body 12;
then starting the vibration exciter 23, wherein the vibration exciter 23 generates a load with certain amplitude and frequency, the load acts on the steel plate spring body 12 through the thrust rod 26, the vibration exciter 23 records the load, a change characteristic curve of the rigidity of the steel plate spring body 12 under the condition of dynamic load is drawn by measuring the corresponding relation between the deformation quantity of the steel plate spring body 12 after the load is applied and the load, and then the dynamic rigidity of the steel plate spring body 12 is finished according to a specified method;
after the test is finished, the hydraulic cylinder 22 drives the vibration exciter 23, the pressure sensor 24, the lifting plate 25, the thrust rod 26 and the fixing assembly 3 to synchronously ascend, at the moment, the trigger push plate 72 is not used for pushing the intermediate rod 35 under the driving of the threaded sleeve ring 53, the intermediate rod 35 automatically drives the side rod 37 and the arc-shaped clamping plate 38 to reset under the elastic force of the first spring 36, and then the limitation on the riding bolt is relieved;
meanwhile, the sliding sleeve 55 drives the back plate 61 to move backwards, so that the first support rod 62 and the second support rod 64 are released from the positioning holes at the two ends of the leaf spring body 12, and at this time, a technician can take down the leaf spring body 12 from the tops of the two auxiliary spring supports 11.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a leaf spring rigidity testing arrangement, includes fixed plate (1) and dynamic rigidity accredited testing organization (2), dynamic rigidity accredited testing organization (2) are located fixed plate (1) top, fixed plate (1) openly both sides are all fixed and are provided with vice spring bracket (11), two leaf spring body (12), its characterized in that have been placed at vice spring bracket (11) top: the bottom end of a thrust rod (26) in the dynamic stiffness testing mechanism (2) is rotatably provided with a fixed assembly (3), the left side of the bottom of a top plate (21) in the dynamic stiffness testing mechanism (2) is rotatably provided with an upper transmission assembly (4), the left side behind the fixed plate (1) is rotatably provided with a lower transmission assembly (5), the upper transmission assembly (4) is in transmission connection with the lower transmission assembly (5), the right side of a sliding sleeve (55) in the lower transmission assembly (5) is fixedly provided with a movable support assembly (6), the top of a threaded sleeve ring (53) in the lower transmission assembly (5) is fixedly provided with a trigger mechanism (7), when a lifting plate (25) in the dynamic stiffness testing mechanism (2) descends, a rack (42) in the upper transmission assembly (4) is driven to descend synchronously, and a gear (52) in the lower transmission assembly (5) is driven to drive a second screw rod (51) to rotate, at the moment, a threaded lantern ring (53) in the lower transmission assembly (5) drives the movable support assembly (6) and the trigger mechanism (7) to move towards the direction close to the fixed plate (1), when the descending distance of the lifting plate (25) reaches a first threshold value, a first support rod (62) and a second support rod (64) in the movable support assembly (6) penetrate through the fixed plate (1) under the driving of a sliding sleeve (55) and enter positioning holes at two ends of the steel plate spring body (12) to position the steel plate spring body (12), when the descending distance of the lifting plate (25) reaches a second threshold value, a containing hole (32) in the fixed assembly (3) is sleeved on the outer side of a horse riding bolt at the top of the steel plate spring body (12), and meanwhile, a trigger push plate (72) in the trigger mechanism (7) drives an intermediate rod (35) in the fixed assembly (3) under the driving of the threaded lantern ring (53), so that the arc-shaped clamping plate (38) clamps the top of the U-bolt on the steel plate spring body (12).
2. The leaf spring rate testing device of claim 1, wherein: dynamic stiffness test mechanism (2) includes roof (21), pneumatic cylinder (22), vibration exciter (23), pressure sensor (24), lifter plate (25) and thrust rod (26), pneumatic cylinder (22) are fixed to be set up and run through roof (21) top and its output shaft and extend to roof (21) bottom and vibration exciter (23) fixed connection in roof (21) top, pressure sensor (24) are fixed to be set up in vibration exciter (23) bottom, lifter plate (25) are fixed to be set up in pressure sensor (24) bottom, thrust rod (26) rotate to be set up in lifter plate (25) bottom right side.
3. The leaf spring rate testing device of claim 2, wherein: the fixed component (3) comprises a fixed seat (31), a containing hole (32), a middle slide way (33), side slide ways (34), a middle rod (35), a first spring (36), a side lever (37) and an arc-shaped clamping plate (38), wherein the fixed seat (31) is rotatably connected with the bottom end of a thrust rod (26), the containing hole (32), the side slide way (34), the side lever (37) and the arc-shaped clamping plate (38) are all provided with four, the four containing holes (32) are respectively arranged at four corners at the bottom of the fixed seat (31), the middle slide way (33) is arranged inside the fixed seat (31), the opening of the middle slide way extends to the middle part of the back surface of the fixed seat (31), the four side slide ways (34) are respectively arranged on two side walls of the middle slide way (33), the middle rod (35) is slidably arranged inside the middle slide way (33), one end of the first spring (36) is fixedly connected with the middle rod (35) and the other end is fixedly connected with the inner wall of the middle slide way (33), the four side rods (37) are arranged on the inner sides of the four side slideways (34) in a sliding mode respectively and are fixedly connected with the middle rod (35), and the four arc-shaped clamping plates (38) are located on the inner sides of the four accommodating holes (32) respectively and are fixedly connected with the four side rods (37) respectively.
4. The leaf spring rate test device of claim 3, wherein: go up drive assembly (4) and include lifter (41) and rack (42), lifter (41) are fixed to be set up in lifter (25) bottom left side, rack (42) are fixed to be set up in lifter (41) right side bottom.
5. The leaf spring rate testing device of claim 4, wherein: lower transmission assembly (5) includes second screw rod (51), gear (52), the screw thread lantern ring (53), elastic component (54) and sliding sleeve (55), second screw rod (51) are connected through bearing and fixed plate (1) rotation, gear (52) slidable set up in second screw rod (51) rear end and with rack (42) meshing, screw thread lantern ring (53) cup joint set up in second screw rod (51) outside and with second screw rod (51) threaded connection, elastic component (54) and sliding sleeve (55) all slide to cup joint set up in second screw rod (51) outside, and elastic component (54) one end and screw thread lantern ring (53) fixed connection and the other end and sliding sleeve (55) fixed connection.
6. The leaf spring rate testing device of claim 5, wherein: the movable support assembly (6) comprises a back plate (61), a first support rod (62), a movable plate (63) and a second support rod (64), the back plate (61) is fixedly arranged on the right side of the sliding sleeve (55), the first support rod (62) is fixedly arranged on the left side of the front face of the back plate (61), the movable plate (63) is rotatably arranged on the right side of the front face of the back plate (61), and the second support rod (64) is fixedly arranged at the bottom of the front face of the movable plate (63).
7. The leaf spring rate testing device of claim 6, wherein: trigger mechanism (7) include L shape connecting rod (71) and trigger push pedal (72), L shape connecting rod (71) are fixed to be set up in screw thread lantern ring (53) top, trigger push pedal (72) are fixed to be set up in L shape connecting rod (71) tip, trigger push pedal (72) are located fixed subassembly (3) rear side.
8. The leaf spring rate test device of claim 8, wherein: the elastic component (54) comprises a second spring (541), an inner sliding shell (542), an outer sliding shell (543), an expansion link (544), a connecting plate (545), a sliding groove (546), a sliding block (547), a third spring (548) and a connecting pipe (549), the second spring (541) is sleeved outside the second screw rod (51), one end of the second spring is fixedly connected with the inner sliding shell (542) and the other end of the second spring is fixedly connected with the outer sliding shell (543), the inner sliding shell (542) and the outer sliding shell (543) are respectively sleeved at two ends of the outer side of the second spring (541), the inner sliding shell (542) is slidably arranged at the inner side of the outer sliding shell (543), the inner sliding shell (542) is fixedly connected with a threaded lantern ring (53), the outer sliding shell (543) is fixedly connected with a sliding sleeve (55), the expansion link (544) is fixedly arranged at the right side of the inner sliding shell (542), the connecting plate (545) is fixedly connected to the end of the telescopic rod (544), the sliding groove (546) is arranged on the second screw rod (51), the sliding block (547) is arranged inside the sliding groove (546) in a sliding mode and is fixedly connected with the gear (52), one end of the third spring (548) is fixedly connected with the sliding block (547) and the other end of the third spring is fixedly connected with the inner wall of the sliding groove (546), the connecting pipe (549) is arranged on the outer side of the second screw rod (51) in a sleeved mode and is fixedly connected with the gear (52), and the connecting plate (545) is arranged on the outer side of the connecting pipe (549) in a sleeved mode through rotation of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191751.2A CN113933170B (en) | 2021-10-13 | 2021-10-13 | Leaf spring rigidity testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191751.2A CN113933170B (en) | 2021-10-13 | 2021-10-13 | Leaf spring rigidity testing arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113933170A true CN113933170A (en) | 2022-01-14 |
| CN113933170B CN113933170B (en) | 2023-10-03 |
Family
ID=79278818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111191751.2A Active CN113933170B (en) | 2021-10-13 | 2021-10-13 | Leaf spring rigidity testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113933170B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989964A (en) * | 2023-09-26 | 2023-11-03 | 常州睿科汽车零部件有限公司 | Spring pad compression resistance detection system for automobile shock absorber |
| CN118376370A (en) * | 2024-06-25 | 2024-07-23 | 中铁五局集团贵州工程有限公司 | Culvert apron movable type construction support tie point testing platform |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6199427B1 (en) * | 1997-12-04 | 2001-03-13 | Intercomp Company | Apparatus and method for testing leaf springs |
| CN106323612A (en) * | 2016-08-22 | 2017-01-11 | 安徽江淮汽车股份有限公司 | Vertical force-bearing bench testing method for plate spring |
| CN106556499A (en) * | 2016-11-18 | 2017-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of leaf spring device for testing stiffness |
| KR101731885B1 (en) * | 2015-12-08 | 2017-05-08 | 대원강업주식회사 | Apparatus for testing spring constant of leaf spring |
| CN107314896A (en) * | 2017-08-03 | 2017-11-03 | 石家庄铁道大学 | For vehicle suspension leaf spring three-dimensional Dynamic performance examination equipment and its application |
| CN208125349U (en) * | 2018-04-02 | 2018-11-20 | 重庆红旗金龙弹簧有限公司 | A kind of automobile leaf spring rigidity test equipment |
| CN208547453U (en) * | 2018-06-09 | 2019-02-26 | 金剑 | A kind of dedicated verifying attachment of few-leaf-spring |
-
2021
- 2021-10-13 CN CN202111191751.2A patent/CN113933170B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6199427B1 (en) * | 1997-12-04 | 2001-03-13 | Intercomp Company | Apparatus and method for testing leaf springs |
| KR101731885B1 (en) * | 2015-12-08 | 2017-05-08 | 대원강업주식회사 | Apparatus for testing spring constant of leaf spring |
| CN106323612A (en) * | 2016-08-22 | 2017-01-11 | 安徽江淮汽车股份有限公司 | Vertical force-bearing bench testing method for plate spring |
| CN106556499A (en) * | 2016-11-18 | 2017-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of leaf spring device for testing stiffness |
| CN107314896A (en) * | 2017-08-03 | 2017-11-03 | 石家庄铁道大学 | For vehicle suspension leaf spring three-dimensional Dynamic performance examination equipment and its application |
| CN208125349U (en) * | 2018-04-02 | 2018-11-20 | 重庆红旗金龙弹簧有限公司 | A kind of automobile leaf spring rigidity test equipment |
| CN208547453U (en) * | 2018-06-09 | 2019-02-26 | 金剑 | A kind of dedicated verifying attachment of few-leaf-spring |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989964A (en) * | 2023-09-26 | 2023-11-03 | 常州睿科汽车零部件有限公司 | Spring pad compression resistance detection system for automobile shock absorber |
| CN116989964B (en) * | 2023-09-26 | 2023-12-08 | 常州睿科汽车零部件有限公司 | Spring pad compression resistance detection system for automobile shock absorber |
| CN118376370A (en) * | 2024-06-25 | 2024-07-23 | 中铁五局集团贵州工程有限公司 | Culvert apron movable type construction support tie point testing platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113933170B (en) | 2023-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113933170A (en) | Steel plate spring stiffness testing device | |
| CN107336174A (en) | A kind of positioning clamping system of automatic gearbox of vehicles valve body assembly test machine | |
| CN109623230A (en) | A kind of drive control precision welding equipment of intelligent automobile steering shaft central siphon | |
| CN106017888A (en) | Semi-floating type half shaft rotation bending fatigue bench test device | |
| CN111947940B (en) | Strength detection device for truck frame production and use method thereof | |
| CN108644585B (en) | Electrical equipment with anti-interference function | |
| CN104502049B (en) | Vehicle steering system impact test device and vehicle steering system impact test method | |
| CN118310735A (en) | Damper performance detection device | |
| CN109655357A (en) | A kind of stamping device detecting lathe casting quality | |
| CN116202789B (en) | Mass detection device for processing automobile shock absorber ware of making an uproar falls in shock attenuation | |
| CN2901278Y (en) | Analogue test table frame for automobile front axle rocking arm dynamic strength durability | |
| CN116878734A (en) | Dynamic balance detection method for new energy automobile speed reducer assembly | |
| CN2716213Y (en) | Heavy type stopper | |
| CN214066480U (en) | Automobile connecting rod fatigue test fixture | |
| CN113848075A (en) | Axle resistance to compression check out test set | |
| CN106706347A (en) | Interference force detection method and interference force detection device for torsion bar assembly | |
| CN206990224U (en) | A kind of frame of motorcycle fatigue strength detection means | |
| CN209542327U (en) | A kind of stamping device detecting lathe casting quality | |
| CN208780061U (en) | A kind of gear ring positioning-hole check tool | |
| CN208198223U (en) | Lorry handling facilities | |
| CN207311636U (en) | A kind of installing mechanism of Platform for tricycle | |
| CN217050728U (en) | Turning structure of masterbatch upset car | |
| CN221725590U (en) | Tyre rim deflection tester | |
| CN219552121U (en) | Compression-resistant detector for automobile frame | |
| CN221273067U (en) | Loader engine overhauls device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |