CN114643822A - Rubber damping device with pressure monitoring function, monitoring method and engineering vehicle - Google Patents
Rubber damping device with pressure monitoring function, monitoring method and engineering vehicle Download PDFInfo
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- CN114643822A CN114643822A CN202210365342.8A CN202210365342A CN114643822A CN 114643822 A CN114643822 A CN 114643822A CN 202210365342 A CN202210365342 A CN 202210365342A CN 114643822 A CN114643822 A CN 114643822A
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- pressure monitoring
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 115
- 238000013016 damping Methods 0.000 title claims abstract description 39
- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000012806 monitoring device Methods 0.000 claims abstract description 37
- 230000035939 shock Effects 0.000 claims abstract description 25
- 238000005303 weighing Methods 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims description 15
- 239000006096 absorbing agent Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000005489 elastic deformation Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000725 suspension Substances 0.000 description 12
- 238000012423 maintenance Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 239000010727 cylinder oil Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/22—Resilient suspensions characterised by arrangement, location or kind of springs having rubber springs only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/22—Resilient suspensions characterised by arrangement, location or kind of springs having rubber springs only
- B60G11/24—Resilient suspensions characterised by arrangement, location or kind of springs having rubber springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vehicle Body Suspensions (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a rubber damping device with a pressure monitoring function, a monitoring method and an engineering vehicle, wherein the rubber damping device comprises an upper connecting plate, a lower connecting plate, a pressure monitoring device, a mechanical connecting device, a rubber body and an annular laminate; a plurality of annular laminated plates are uniformly distributed in the rubber body, one end of the rubber body is connected with the pressure monitoring device, and the other end of the rubber body is connected with the lower connecting plate; the rubber body, the pressure monitoring device, the lower connecting plate and the plurality of annular laminated plates are integrally vulcanized into a whole; the upper connecting plate is installed at the pressure monitoring device, the rubber body is of a hollow structure, and the mechanical connecting device penetrates through the center of the rubber body to connect the upper connecting plate with the lower connecting plate. Through the mode, the weighing device can realize the weighing function of the vehicle under the condition of not changing the existing vehicle structure, has the shock absorption effect equivalent to that of the prior art, and is simple in structure and low in cost.
Description
Technical Field
The invention relates to a rubber damping device with a pressure monitoring function, belongs to the field of machinery, and can be used for heavy-duty mining dump trucks, in particular to articulated dump trucks.
Background
The mining dump truck has severe road conditions, particularly the articulated dump truck, and an elastic suspension system is required to be configured for reducing the influence of ground impact on the running of the whole truck. The elastic element is a common suspension oil cylinder and a rubber damping device. For rigid dump trucks with slightly better road conditions, the form of a suspension cylinder is mostly adopted, but for articulated dump trucks with particularly severe road conditions, a rubber damping device is mostly adopted. The rubber damping device has a damping effect inferior to that of a suspension cylinder oil cylinder, but has higher reliability and no maintenance, and is widely applied to the field of articulated dump trucks.
Patent US4615513 and patent WO2012002064 have introduced two kinds of articulated formula tipper suspension rubber damping device that the structure is similar respectively, adopt multilayer steel sheet and superimposed structure of rubber, the reliability is high, the result of use is good, but above-mentioned two kinds of rubber damping device do not have the function of weighing, can't satisfy the needs of technical development.
With the development requirements of informationization, digitization and intelligent mines, higher requirements are also put forward on vehicles, and information such as oil consumption, transport mileage, load capacity and complete machine faults of a dumper needs to be monitored in real time so as to continuously improve the operation efficiency. The weighing function is generally realized by a suspension system, and if the weighing function is a suspension cylinder oil cylinder structure, the pressure change of the suspension cylinder can be directly read to calculate the load. However, the suspension of the articulated dump truck mostly adopts the rubber damping device in the patent, and the pressure change cannot be read, so that the weighing system is always a problem which is difficult to solve by the articulated dump truck. If change the rubber shock attenuation into and hang the jar structure, will certainly greatly increased the cost, current space and structure realization degree of difficulty are great moreover.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a rubber damping device with a pressure monitoring function, which can realize real-time monitoring of pressure and realize measurement of the weight of goods borne by a vehicle through a certain algorithm.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention discloses a rubber damping device with a pressure monitoring function, which comprises an upper connecting plate, a lower connecting plate, a pressure monitoring device, a mechanical connecting device, a rubber body and an annular laminated plate, wherein the upper connecting plate is connected with the lower connecting plate through a connecting rod; a plurality of annular laminated plates are uniformly distributed in the rubber body, one end of the rubber body is connected with the pressure monitoring device, and the other end of the rubber body is connected with the lower connecting plate; the rubber body, the pressure monitoring device, the lower connecting plate and the plurality of annular laminated plates are integrally vulcanized into a whole; the upper connecting plate is installed at the pressure monitoring device, the rubber body is of a hollow structure, and the mechanical connecting device penetrates through the center of the rubber body to connect the upper connecting plate with the lower connecting plate.
The preferable scheme of the pressure monitoring device is as follows: the pressure monitoring device comprises a base, an outer ring, an inner ring, an elastic body and a strain gauge; the outer ring of the base is provided with a step, the inner ring of the base is provided with an inner protective ring, and the inner protective ring is used for protecting the pressure testing device when the rubber body is vulcanized; the outer ring is placed on the base, a plurality of elastic bodies are uniformly distributed on the inner ring of the outer ring, and a plurality of guide grooves are formed in the outer ring of the outer ring; the elastic body supports the inner ring, and the strain gauge is arranged on the elastic body.
Further scheme: the outer ring and the base form an integrated structure in a welding mode or an integrated casting mode; or the outer ring and the base form a split structure in a bolt connection mode.
Further scheme: the elastic body and the inner ring are not in contact with the base, and a distance L1 is reserved; the upper part of the inner ring is higher than the upper part of the outer ring by a distance L2; the side face of the elastic body is provided with a strain gauge, when the upper part of the inner ring is pressed, downward movement is generated, L1 is reduced, and meanwhile, the elastic body is elastically deformed, and the deformation of the elastic body can also cause the resistance of the strain gauge arranged on the side face of the elastic body to change.
Preferred scheme of upper junction plate: the upper connecting plate comprises a top plate, a guide ring and an outer protective ring; a plurality of upper mounting holes are formed in the periphery of the top plate, an upper stepped hole is formed in the center of the top plate, and a plurality of guide columns are arranged on the inner ring of the guide ring.
Further scheme: the inner ring of the guide ring is matched with the outer ring of the outer ring, and the guide post is matched with the guide groove, so that the upper connecting plate and the pressure monitoring device only move axially relatively without circumferential relative movement; the outer protection plate is matched with the ladder of the outer ring of the base to protect the pressure monitoring device.
Preferred scheme of lower connecting plate: a plurality of lower mounting holes are formed in the periphery of the lower connecting plate, and a lower stepped hole is formed in the center of the lower connecting plate.
Preferred embodiments of the mechanical connection means: the mechanical connecting device comprises a lower connecting seat, an upper connecting seat, a connecting ring and a locking nut; the lower connecting seat is matched with a lower stepped hole of the lower connecting plate, and the upper connecting seat is matched with an upper stepped hole of the upper connecting plate; the connecting ring is positioned in the rubber body and used for connecting the lower connecting seat and the upper connecting seat; and the locking nut is screwed on the upper connecting seat which penetrates out of the upper connecting plate by a preset distance, so that the limit on the farthest distance between the upper connecting plate and the lower connecting plate is completed.
The invention also discloses a monitoring method based on the rubber damping device with the pressure monitoring function, which comprises the following steps:
the rubber damping device is connected with the vehicle axle through a lower mounting hole in the lower connecting plate and is connected with the vehicle body through an upper mounting hole in the upper connecting plate; the upper part of an inner ring in the pressure monitoring device is in contact with an upper connecting plate, when the rubber damping device is under the pressure of a vehicle body, the upper connecting plate can transmit the pressure to an elastic body in the pressure monitoring device through the inner ring to enable the elastic body to generate elastic deformation, the deformation of the elastic body can cause the resistance change of a strain gauge arranged on the side surface of the elastic body, the change of the resistance generates the change of current, and then the pressure borne by the inner ring is measured through calculation; weighing is achieved by calculating the weight of the cargo carried by the vehicle from changes in the pressure monitored by a plurality of rubber shock absorbers disposed on the vehicle.
The invention also discloses an engineering vehicle which comprises a vehicle body, an axle and the rubber damping device with the pressure monitoring function, wherein the rubber damping device is connected between the vehicle body and the axle through a fastening piece.
Further scheme: the engineering vehicle is preferably an articulated dump truck.
Based on the application of the technical scheme, compared with the prior art, the invention has the beneficial effects that:
the rubber damping device has the advantages that the structure and the installation size can be completely consistent with those of the existing structure, the vehicle weighing function is realized, and the structure is simple. The concrete expression is as follows: the first rubber damping device can directly replace the existing rubber damping device without changing the structure and the size; secondly, the damping effect of the rubber damping device is consistent with that of the prior art, and the damping effect is not weakened due to the fact that the weighing function is added; thirdly, the structure is simple, the pressure monitoring device is made of conventional materials, the processing is simple, the strain gauge is a conventional product, the cost is low, and the manufacturing cost is not increased basically; fourthly, the rubber damping device is not required to be maintained at ordinary times, maintenance is avoided, and compared with a suspension cylinder form, the maintenance cost is greatly reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic view of a connection mode of the rubber shock absorber device of the present invention in a vehicle;
FIG. 2 is a perspective view of the rubber shock absorber device of the present invention;
FIG. 3 is a sectional view of a rubber vibration damper according to the present invention;
FIG. 4 is a perspective view of a pressure monitoring device of the rubber vibration damper according to the present invention;
FIG. 5 is a front view and a view from side B-B of a pressure monitoring device of the rubber vibration damper according to the present invention;
FIG. 6 is a perspective view of an upper connecting plate of the rubber vibration damper according to the present invention;
FIG. 7 is a front view and an A-A side view of an upper connecting plate of the rubber vibration damper according to the present invention;
FIG. 8 is a view showing the structure of a lower connecting plate of the rubber vibration damper according to the present invention;
FIG. 9 is a view showing the structure of a mechanical coupling device of the rubber damper according to the present invention;
fig. 10 is a schematic diagram of the calculation of the cargo weight of an articulated dump truck.
The attached drawings are as follows: 1. a rubber shock absorbing device; 2. an upper connecting plate; 3. a lower connecting plate; 4. a pressure monitoring device; 5. a mechanical connection device; 6. a rubber body; 7. an annular laminate; 8. an axle; 9. a vehicle body; 10. a fastener; 2-1, a top plate; 2-2, a guide ring; 2-3 guide posts; 2-4, an outer protective ring; 2-5, mounting holes are formed; 2-6, an upper stepped hole; 2-7, an upper stepped hole; 3-1, lower mounting holes; 3-2, lower stepped holes; 3-3, a lower stepped hole; 4-1, a base; 4-2, outer ring; 4-3, inner ring; 4-4, an elastomer; 4-5, strain gauge; 4-6, a guide groove; 4-7, an inner protective ring; 4-8, steps; 5-1, a lower connecting seat; 5-2, an upper connecting seat; 5-3, connecting rings; 5-4, and locking the nut.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 shows a connection mode of the rubber shock-absorbing device 1 in a vehicle, the rubber shock-absorbing device 1 is connected to a vehicle body 9 and an axle 8 respectively through a fastener 10, during the operation of the vehicle, the axle 8 is affected by a rough road surface and generates large shock, and the rubber shock-absorbing device 1 can relieve or isolate the shock generated by the axle 8 and reduce the effect of the shock on the vehicle body 9.
It should be noted that the vehicle body 9 may be a frame or a suspension of the vehicle.
Fig. 2 and 3 are structural views of the rubber damper 1 according to the present invention. The rubber damping device 1 is composed of an upper connecting plate 2, a lower connecting plate 3, a pressure monitoring device 4, a mechanical connecting device 5, a rubber body 6 and an annular laminate 7. One end of the rubber body 6 is connected with the pressure monitoring device 4, the other end of the rubber body is connected with the lower connecting plate 3, a plurality of annular laminated plates 7 are uniformly distributed in the rubber body 6, the deformation of the rubber body 6 under stress can be reduced by the annular laminated plates 7, and the rigidity and the pressure resistance are improved. The rubber body 6, the pressure monitoring device 4, the lower connecting plate 3 and the plurality of annular laminates 7 are integrally vulcanized into a whole. The rubber body 6 is a hollow structure, and the mechanical connecting device 5 penetrates through the center of the rubber body 6 to connect the upper connecting plate 2 with the lower connecting plate 3. The mechanical connection means 5 limit the maximum distance between the upper connection 2 and the lower connection plate 3 and prevent the rubber body 6 from receiving a large pulling force. The general rubber has good pressure bearing performance, and the rubber is easy to crack due to large tensile force.
A preferred embodiment of the pressure monitoring device in the above solution is given below:
fig. 4 and 5 show the structure of the pressure monitoring device 4 of the rubber shock-absorbing device 1, wherein the pressure monitoring device 4 is composed of a base 4-1, an outer ring 4-2, an inner ring 4-3, an elastic body 4-4 and a strain gauge 4-5. The outer ring of the base 4-1 is provided with a step 4-8. An inner protective ring 4-7 is arranged on the inner ring of the base 4-1, and the inner protective ring 4-7 is used for protecting the pressure testing device 4 when the rubber body 6 is vulcanized. The outer ring 4-2 is arranged on the base 4-1 and can be of an integrated structure or a split structure with the base 4-1 and is connected together through bolts. A plurality of elastic bodies 4-4 are uniformly arranged on the inner ring of the outer ring 4-2, the elastic bodies 4-4 support the inner ring 4-3, the elastic bodies 4-4 and the inner ring 4-3 are not in contact with the base 4-1, and a distance L1 is reserved. The upper part of the inner ring 4-3 is higher than the upper part L2 of the outer ring 4-2. The elastic body 4-4 is laterally provided with a strain gauge 4-5. When the upper part of the inner ring 4-3 is pressed, a downward movement is generated, L1 becomes small, and elastic deformation is generated on the elastic body 4-4. The deformation of the elastic body 4-4 also causes a change in the resistance of the strain gauge 4-5 arranged on the side of the elastic body 4-4. The outer ring of the outer ring 4-2 is provided with a plurality of guide grooves 4-6.
A preferred embodiment of the above solution with respect to the upper connection plate is given below:
fig. 6 and 7 show the structure of the upper connecting plate 2 according to the invention, wherein the upper connecting plate 2 consists of a top plate 2-1, a guide ring 2-2 and an outer guard ring 2-4. A plurality of upper mounting holes 2-5 are arranged on the periphery of the top plate 2-1, an upper stepped hole 2-6 and an upper stepped hole 2-7 are arranged in the center of the top plate 2-1, and a plurality of guide columns 2-3 are arranged on the inner ring of the guide ring 2-2. The inner ring of the guide ring 2-2 is matched with the outer ring of the outer ring 4-2, and the guide columns 2-3 are matched with the guide grooves 4-6, so that the upper connecting plate 2 and the pressure monitoring device 4 only move axially relatively without circumferential relative movement. The outer protective ring 2-4 is matched with the step 4-8 to prevent external objects from entering the pressure monitoring device 4 to damage the pressure monitoring device 4.
A preferred embodiment of the above solution with respect to the lower connecting plate is given below:
FIG. 8 shows the structure of the lower connecting plate 3 of the rubber damping device 1 of the present invention, wherein the periphery of the lower connecting plate 3 is provided with a plurality of lower mounting holes 3-1, and the center of the lower connecting plate 3 is provided with a lower stepped hole 3-2 and a lower stepped hole 3-3.
A preferred embodiment of the above solution with respect to the mechanical connection means is given below:
fig. 9 shows the structure of the mechanical connecting device 5 of the rubber damper 1 according to the present invention. The mechanical connecting device 5 consists of a lower connecting seat 5-1, an upper connecting seat 5-2, a connecting ring 5-3 and a locking nut 5-4. The lower connecting seat 5-1 is matched with the lower stepped hole 3-2 and the lower stepped hole 3-3, and the upper connecting seat 5-2 is matched with the upper stepped hole 2-6 and the upper stepped hole 2-7; the connecting ring 5-3 is positioned in the rubber body 6 and is used for connecting the lower connecting seat 3 and the upper connecting seat 2; the locking nut 5-4 is screwed on the upper connecting seat 5-2 which penetrates out of the upper connecting plate 2 by a preset distance. The mechanical connection means 5 limit the maximum distance between the upper web 2 and the lower web 3 and prevent the rubber body 6 from receiving a large pulling force.
The monitoring method of the rubber shock absorber with the pressure monitoring function is given as follows:
the rubber shock-absorbing device 1 is connected with the axle 8 through the lower mounting holes 3-1, and the rubber shock-absorbing device 1 is connected with the vehicle body 9 through the upper mounting holes 2-5. The upper portion of the inner ring 4-3 is in contact with the upper connecting plate 2, when the rubber shock absorption device 1 is under the pressure action of the vehicle body 9, the upper connecting plate 2 can transmit the pressure to the elastic body 4-4 through the inner ring 4-3, so that the elastic body 4-4 generates elastic deformation, the deformation of the elastic body 4-4 can cause the resistance change of the strain gauge 4-5 arranged on the side surface of the elastic body 4-4, the change of the resistance generates the change of current, and then the pressure borne by the inner ring 4-3 is measured through calculation. Weighing is performed by calculating the weight of the cargo carried by the vehicle from the changes in the pressure monitored by the plurality of rubber shock-absorbing devices 1 arranged on the vehicle.
The following gives the preferred embodiment of the above-mentioned technical solution for weighing by calculating the weight of the load carried by the vehicle through the changes in the pressure monitored by a plurality of rubber shock-absorbing devices arranged on the vehicle:
as shown in fig. 10, an articulated dump truck has three axles, a front axle, a middle axle and a rear axle, wherein the front axle is connected with a front frame, the left and the right of the rear frame are respectively provided with a balance beam, the middle axle and the rear axle are connected with the balance beams through rubber shock absorption devices, the gravity of goods in a container is transmitted to the balance beams through the frames, and then the balance beams are transmitted to the axles; the horizontal distance between the center of the balance beam and the center of the front axle is a, the horizontal distance between the center of gravity of the cargo and the center of the balance beam is b, the pressures measured by the rubber shock absorption devices arranged at the two ends of the balance beam are f1, f2, f3 and f4 respectively, and in the horizontal state, the sum of the pressures measured by the four rubber shock absorption devices is the pressure f borne by the center of the balance beam, namely f = f1+ f2+ f3+ f 4.
Assuming that the cargo weight is m, decomposing m into the pressure F at the center of the balance beam;
according to mechanical principles, F = m × g (a-b)/a, where g is the acceleration of gravity;
from F = F, m × g (a-b)/a = F1+ F2+ F3+ F4;
thus, m = a (f1+ f2+ f3+ f4)/[ g (a-b) ].
If on the ground with a certain inclination, force is required to be converted to the vertical direction according to the principle of physics, the inclination of the ground can be measured by two inclination sensors arranged on a front frame and a rear frame, the measurement accuracy of a system is influenced by the overlarge inclination, and the value is generally read when the ground inclination is not more than 10 degrees under the static state of a vehicle; the calculation process only considers the influence of the cargo weight m (variable value) on the rubber shock absorption device value, and does not consider the weight of the vehicle, and the weight of the vehicle is a fixed value and can be excluded in the system in advance.
In conclusion, the structure of the rubber shock absorption device 1 provided by the invention can be completely consistent with the existing structure and installation size, and simultaneously, the vehicle weighing function is realized, and the structure is simple. The concrete expression is as follows: the first rubber damping device 1 can directly replace the existing rubber damping device without changing the structure and the size; secondly, the damping effect of the rubber damping device 1 is consistent with that of the prior art, and the damping effect is not weakened due to the fact that the weighing function is added; thirdly, the structure is simple, the pressure monitoring device 4 is made of conventional materials, the processing is simple, the strain gauge 4-5 is a conventional product, the cost is low, and the manufacturing cost is not increased basically. Fourthly, the rubber damping device 1 is not required to be maintained at ordinary times, maintenance is avoided, and compared with a suspension cylinder form, the maintenance cost is greatly reduced.
The invention also discloses an engineering vehicle which comprises a vehicle body, an axle and the rubber damping device with the pressure monitoring function, wherein the rubber damping device is connected between the vehicle body and the axle through a fastening piece.
Further scheme: the work vehicle is preferably an articulated dump truck.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a rubber damping device with pressure monitoring function which characterized in that:
the device comprises an upper connecting plate, a lower connecting plate, a pressure monitoring device, a mechanical connecting device, a rubber body and an annular laminate;
a plurality of annular laminated plates are uniformly distributed in the rubber body, one end of the rubber body is connected with the pressure monitoring device, and the other end of the rubber body is connected with the lower connecting plate;
the rubber body, the pressure monitoring device, the lower connecting plate and the plurality of annular laminated plates are integrally vulcanized into a whole;
the upper connecting plate is installed at the pressure monitoring device, the rubber body is of a hollow structure, and the mechanical connecting device penetrates through the center of the rubber body to connect the upper connecting plate with the lower connecting plate.
2. The rubber shock absorber device with pressure monitoring function as claimed in claim 1, wherein:
the pressure monitoring device comprises a base, an outer ring, an inner ring, an elastic body and a strain gauge;
the outer ring of the base is provided with a step, the inner ring of the base is provided with an inner protective ring, and the inner protective ring is used for protecting the pressure testing device when the rubber body is vulcanized;
the outer ring is placed on the base, a plurality of elastic bodies are uniformly distributed on the inner ring of the outer ring, and a plurality of guide grooves are formed in the outer ring of the outer ring;
the elastic body supports the inner ring, and the strain gauge is arranged on the elastic body.
3. The rubber shock absorber device with pressure monitoring function as claimed in claim 2, wherein:
the outer ring and the base form an integrated structure in a welding mode or an integrated casting mode;
or the outer ring and the base form a split structure in a bolt connection mode.
4. The rubber shock absorber device with pressure monitoring function as claimed in claim 2, wherein:
the elastic body and the inner ring are not in contact with the base, and a distance L1 is reserved;
the upper part of the inner ring is higher than the upper part of the outer ring by a distance L2;
the side face of the elastic body is provided with a strain gauge, when the upper part of the inner ring is pressed, downward movement is generated, L1 is reduced, and meanwhile, the elastic body is elastically deformed, and the deformation of the elastic body can also cause the resistance of the strain gauge arranged on the side face of the elastic body to change.
5. The rubber shock absorber device with pressure monitoring function as claimed in claim 2, wherein:
the upper connecting plate comprises a top plate, a guide ring and an outer protective ring;
a plurality of upper mounting holes are formed in the periphery of the top plate, an upper stepped hole is formed in the center of the top plate, and a plurality of guide columns are arranged on the inner ring of the guide ring.
6. The rubber shock absorber device with pressure monitoring function as claimed in claim 5, wherein:
the inner ring of the guide ring is matched with the outer ring of the outer ring, and the guide post is matched with the guide groove, so that the upper connecting plate and the pressure monitoring device only move axially relatively without circumferential relative movement;
the outer protection plate is matched with the ladder of the outer ring of the base to protect the pressure monitoring device.
7. The rubber shock absorber device with pressure monitoring function as claimed in claim 1, wherein:
a plurality of lower mounting holes are formed in the periphery of the lower connecting plate, and a lower stepped hole is formed in the center of the lower connecting plate.
8. The rubber shock absorber device with pressure monitoring function as claimed in claim 1, wherein:
the mechanical connecting device comprises a lower connecting seat, an upper connecting seat, a connecting ring and a locking nut;
the lower connecting seat is matched with a lower stepped hole of the lower connecting plate, and the upper connecting seat is matched with an upper stepped hole of the upper connecting plate;
the connecting ring is positioned in the rubber body and used for connecting the lower connecting seat and the upper connecting seat;
and the locking nut is screwed on the upper connecting seat which penetrates out of the upper connecting plate by a preset distance, so that the limit on the farthest distance between the upper connecting plate and the lower connecting plate is completed.
9. A monitoring method of a rubber damper with a pressure monitoring function according to any one of claims 1 to 8, characterized in that:
the rubber damping device is connected with the vehicle axle through a lower mounting hole in the lower connecting plate and is connected with the vehicle body through an upper mounting hole in the upper connecting plate;
the upper part of an inner ring in the pressure monitoring device is in contact with an upper connecting plate, when the rubber damping device is under the pressure of a vehicle body, the upper connecting plate can transmit the pressure to an elastic body in the pressure monitoring device through the inner ring to enable the elastic body to generate elastic deformation, the deformation of the elastic body can cause the resistance change of a strain gauge arranged on the side surface of the elastic body, the change of the resistance generates the change of current, and then the pressure borne by the inner ring is measured through calculation;
weighing is achieved by calculating the weight of the cargo carried by the vehicle from changes in the pressure monitored by a plurality of rubber shock absorbers disposed on the vehicle.
10. The utility model provides an engineering vehicle, includes automobile body and axle, its characterized in that:
further comprising the rubber shock absorbing device with a pressure monitoring function of any one of claims 1 to 8, which is attached between the vehicle body and the axle by a fastener.
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| CN202210365342.8A CN114643822B (en) | 2022-04-08 | 2022-04-08 | Rubber damping device with pressure monitoring function, monitoring method and engineering vehicle |
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| CN202210365342.8A CN114643822B (en) | 2022-04-08 | 2022-04-08 | Rubber damping device with pressure monitoring function, monitoring method and engineering vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022125618A1 (en) | 2022-10-05 | 2024-04-11 | Zf Cv Systems Europe Bv | Device for measuring a wheel or axle load |
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| WO2024074278A1 (en) * | 2022-10-05 | 2024-04-11 | Zf Cv Systems Europe Bv | Device for measuring a wheel or axle load |
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| Publication number | Publication date |
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| CN114643822B (en) | 2024-03-26 |
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