CN214749412U - Load test device for movable airplane three-foot jack - Google Patents
Load test device for movable airplane three-foot jack Download PDFInfo
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- CN214749412U CN214749412U CN202120656115.1U CN202120656115U CN214749412U CN 214749412 U CN214749412 U CN 214749412U CN 202120656115 U CN202120656115 U CN 202120656115U CN 214749412 U CN214749412 U CN 214749412U
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Abstract
The utility model discloses a portable aircraft tripod jack load test device, include: footstock, pull rod, switching auricle, the footstock include: the base downside set up force cell sensor, the base around evenly connect three cantilever, the one end of pull rod is connected perpendicularly to the free end of every cantilever, adopt between cantilever and the pull rod articulated, the one end of switching auricle is connected to the other end of pull rod, the other end of switching auricle connects the detection of jack and connects the ear. The invention relates to a special detection device for a movable three-leg jack used on site, which adopts the principles of machinery and force value sensors, and has the advantages of simple structure, high precision and few faults.
Description
Technical Field
The utility model discloses a portable aircraft tripod jack load test device relates to aircraft jack test technical field.
Background
The airplane jack needs to carry out load test regularly, and a special detection device of the movable tripod jack needs to be used on site when the airplane jack lacks experimental equipment and does not have detection conditions or cannot be transferred into a detection site; at present, the equipment is basically lack of the equipment, the hydraulic device is used in the same kind of equipment, the load is expressed by hydraulic pressure, and the equipment is heavy, poor in precision, high in failure rate and large in maintenance workload.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the defect among the above-mentioned background art, provide a portable aircraft tripod jack load test device, simple structure, precision are high.
In order to achieve the above object, the utility model adopts the following technical scheme: a portable aircraft tripod jack load test device includes: footstock, pull rod, switching auricle, the footstock include: the device comprises a base, cantilevers, force measuring sensors and a top head, wherein the force measuring sensors are arranged on the lower side of the base and are connected with a sensor instrument, the lower ends of the force measuring sensors are connected with the top head, the force measuring sensors are in threaded connection with the base, the three cantilevers are uniformly connected around the base, the free end of each cantilever is vertically connected with one end of a pull rod, the cantilevers are hinged with the pull rod, the other end of the pull rod is connected with one end of a switching lug piece, the other end of the switching lug piece is connected with a detection lug of a jack, and the switching lug piece is connected with the detection lug to play a role of switching with the pull rod; the pull rod is connected with the jacking seat through the shaft pin to form a limiting device of the screw rod of the jack, when the screw rod of the jack is ejected out, pressure is applied, the device is connected with the body of the jack through the pull rod, when the screw rod of the jack is ejected out, the jacking head is fixed on the body of the jack through the pull rod to bear force, the load value is detected through the force measuring sensor, and the force measuring sensor is high in precision and good in stability.
Furthermore, pin holes are formed in two ends of the pull rod.
Furthermore, the two ends of the switching lug are provided with pin holes, the two ends of the switching lug are designed in a semicircular shape, one side edge of the switching lug is designed in a straight line, and the other side edge of the switching lug is designed in an arc line.
Further, switching auricle both ends set up the pinhole and include: the diameter of the first pin hole is larger than that of the second pin hole, when the diameter of the first pin hole is fixed, the larger the diameter of the second pin hole is, the larger the bearing capacity of the switching lug plate is, the first pin hole is connected with the upper pull rod, and the second pin hole is connected with the detection lug; the first pin hole is large in diameter and fixed in diameter so as to adapt to a large-tonnage jack; the diameter must be because it is connected to the detection device itself and will not change; the second pin hole is connected with the jack detection connecting lug, the jack detection connecting lug with different tonnages has different hole diameters, the pin hole, the detection connecting lug and the bearing pin are tightly matched, and the maximum load is improved.
Further, the pull rod and the connecting lug plates are provided with pin bosses, the pin bosses are divided into a left pin boss and a right pin boss, the pull rod is arranged between the left pin boss and the right pin boss, the left half of the pull rod is provided with 4 threaded holes, the right half of the pull rod is provided with 4 through holes, the pull rod is connected with the pin bosses through bolts, the holes and the bolts are matched closely, the base at the rear end of the pin boss is fixedly connected with the pull rod, the side wall of the front end of the pin boss is correspondingly provided with pin holes, the pin holes at the front end of the pin boss and the centers of the pin holes on the pull rod are on the same axis, the pull rod and the gaps at two sides of the left pin boss and the right pin boss are respectively connected with a lug plate for switching, the left switching lug plate and the right switching lug plate can increase bearing capacity, stress points can be balanced, and the bearing pin has no torque.
Furthermore, the switching lug is connected with the detection lug of the jack by a pin shaft.
Furthermore, the lifting lugs are arranged on the upper side of the top seat, so that the whole device is convenient to carry and hoist.
The operation process is as follows: when the jack is in work, the footstock (comprising the sensor), the pull rod, the pin seat and the switching lug plate are connected and placed in a jacking socket at the upper end of the screw rod of the jack, the screw rod of the jack is pushed out and lifted until a pin hole of the switching lug plate at the lower end of the pull rod is aligned with a detection lug hole of the jack, and the switching lug plate and the detection lug plate are connected by the bearing pin; and (4) switching on the sensor instrument, continuing to lift the jack, gradually increasing the load borne by the jack, detecting the leakage and overflow of the jack, and carrying out the load test of the jack.
Has the advantages that: the invention is a special detection device of the portable tripod jack used in the scene, adopt machinery and force value sensor principle, simple in construction, the precision is high, trouble is few; meanwhile, the defects of heavy equipment, poor precision, high failure rate and large maintenance workload of the similar equipment using the hydraulic oil cylinder in the prior art are overcome.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the switching tab of the present invention (a: 125t, b: 100t, c: 50t, d: 25t, e: 10 t);
fig. 3 is a schematic structural diagram of the bearing pin of the present invention.
Detailed Description
The following describes the embodiments in further detail with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In one embodiment shown in fig. 1, a mobile aircraft tripodal jack load testing apparatus comprises: footstock, pull rod 6, switching lug 8, the footstock include: the force measuring device comprises a base 1, cantilevers 2, a force measuring sensor 3 and a top head 4, wherein the force measuring sensor 3 is arranged on the lower side of the base 1, the force measuring sensor 3 is connected with a sensor instrument 5, the lower end of the force measuring sensor 3 is in threaded connection with the top head 4, the force measuring sensor 3 is in threaded connection with the base 1, the three cantilevers 2 are uniformly connected around the base 1, the free end of each cantilever 2 is vertically connected with one end of a pull rod 6, the cantilevers 2 are hinged with the pull rod 6, the other end of the pull rod 6 is connected with one end of a switching lug piece 8, the other end of the switching lug piece 8 is connected with a detection lug of a jack, and the switching lug piece 8 is connected with the detection lug to achieve the switching effect with the pull rod 6; the pull rod 6 is connected with the jacking seat through a pin shaft to form a limiting device of the screw rod of the jack, when the screw rod of the jack is ejected out, pressure is applied, the device is connected with the body of the jack through the pull rod 6, when the screw rod of the jack is ejected out, the jacking head 4 is fixed on the body of the jack through the pull rod 6 to be stressed, the load value is detected through the force cell 3, and the force cell 3 is used, so that the accuracy is high, and the stability is good.
The two ends of the pull rod 6 are provided with pin holes, and the upper side of the top seat is provided with a lifting lug 7, so that the whole device is convenient to carry and hoist.
As shown in fig. 2, pin holes are formed at two ends of the adapting lug 8, the two ends of the adapting lug 8 are designed in a semicircular shape, one side of the adapting lug 8 is designed in a straight line, and the other side of the adapting lug 8 is designed in an arc line. The 8 both ends of switching auricle piece set up the pinhole and include: the diameter of the first pin hole is larger than that of the second pin hole, when the diameter of the first pin hole is fixed, the larger the diameter of the second pin hole is, the larger the bearing capacity of the switching lug piece 8 is, the first pin hole is connected with the upper pull rod 6, and the second pin hole is connected with the detection lug; the first pin hole is large in diameter, has a certain diameter and is large in diameter so as to adapt to a large-tonnage jack; the diameter of the first pin hole is determined because the diameter of the first pin hole is connected with the detection device and cannot be changed; the second pin hole is connected with the jack detection connecting lug, the jack detection connecting lug with different tonnages has different hole diameters, and the pin hole, the detection connecting lug and the bearing pin are tightly matched, so that the maximum load is improved.
The adapter tab 8 in fig. 2 has a smaller diameter from top to bottom, and the bearing capacity is gradually reduced with the corresponding size of the bearing pin in fig. 3, and the bearing capacity ranges from (0 to 125) t.
The pull rod 6 and the connecting lug plates between be provided with a pin boss, the pin boss is divided into a left pin boss 9 and a right pin boss 10, the pull rod 6 is arranged between the left pin boss 9 and the right pin boss 10, the left half is provided with 4 threaded holes, the right half is provided with 4 through holes, the pull rod 6 is provided with 4 through holes, the pull rod is connected by bolts, the matching of the holes and the bolts is tighter, the base at the rear end of the pin boss is fixedly connected with the pull rod 6, the side wall of the front end of the pin boss is correspondingly provided with a pin hole, the pin hole at the front end of the pin boss and the center of the pin hole on the pull rod 6 are on the same axis, the pull rod 6 is respectively connected with a switching lug plate 8 between the gaps at the two sides of the left pin boss and the right pin boss, the left switching lug plate 8 and the right switching lug plate can increase bearing capacity, stress points can be balanced, and the bearing pin has no torque.
The switching lug 8 is connected with the detection lug of the jack by a pin shaft 11.
When the utility model works, the footstock (including the sensor), the pull rod, the pin seat and the switching lug are connected and placed in the jacking nest at the upper end of the screw rod of the jack, and then the screw rod of the jack is ejected out, so that the pin hole of the switching lug on the pull rod is aligned with the detection lug hole of the jack, and the switching lug and the detection lug are connected by the bearing pin; and (4) switching on the sensor instrument, jacking the jack, gradually increasing the load borne by the jack, detecting the leakage and overflow of the jack, and carrying out the load test of the jack.
Has the advantages that: the invention is a special detection device of the portable tripod jack used in the scene, adopt machinery and force value sensor principle, simple in construction, the precision is high, trouble is few; meanwhile, the defects of heavy equipment, poor precision, high failure rate and large maintenance workload of the similar equipment using the hydraulic oil cylinder in the prior art are overcome.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (7)
1. The utility model provides a portable aircraft tripod jack load test device which characterized in that includes: footstock, pull rod, switching auricle, the footstock include: base, cantilever, force cell sensor and top, the base downside set up force cell sensor, force cell sensor connection sensor instrument, the force cell sensor lower extreme is connected with the top, the base around evenly connect three cantilever, the one end of pull rod is connected perpendicularly to the free end of every cantilever, adopt between cantilever and the pull rod to articulate, the one end of switching auricle is connected to the other end of pull rod, the detection that the jack was connected to the other end of switching auricle connects the ear.
2. The mobile aircraft tripodal jack load testing device according to claim 1, wherein pin holes are arranged at two ends of the pull rod.
3. The mobile aircraft tripodal jack load test device according to claim 1, wherein pin holes are arranged at two ends of the adapter lug, the two ends of the adapter lug are designed in a semicircular shape, one side edge of the adapter lug is designed in a straight line, and the other side edge of the adapter lug is designed in an arc line.
4. The mobile aircraft tripodal jack load testing device of claim 3, wherein the pin holes provided at two ends of the switching lug piece comprise: the diameter of the first pin hole is larger than that of the second pin hole, when the diameter of the first pin hole is fixed, the larger the diameter of the second pin hole is, the larger the bearing capacity of the switching lug piece is, the first pin hole is connected with the pull rod, and the second pin hole is connected with the detection lug.
5. The load test device for the three-legged jack of the mobile aircraft as claimed in claim 1, wherein a pin seat is provided between the pull rod and the connecting lug, the pin seat is divided into a left pin seat and a right pin seat, the pull rod is provided between the left pin seat and the right pin seat, the left pin seat, the right pin seat and the pull rod are connected by bolts, the side walls of the front ends of the left pin seat and the right pin seat are correspondingly provided with pin holes, the centers of the pin holes on the front ends of the pin seats and the pull rod are on the same axis, and the connecting lug is connected between the pull rod and the gaps on the two sides of the left pin seat and the right pin seat.
6. The mobile aircraft tripodal jack load test device according to claim 1, wherein the switching lug is connected with the detection lug of the jack by a pin shaft.
7. The mobile aircraft tripodal jack load test device according to claim 1, wherein the upper side of the footstock is provided with a lifting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120656115.1U CN214749412U (en) | 2021-03-31 | 2021-03-31 | Load test device for movable airplane three-foot jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120656115.1U CN214749412U (en) | 2021-03-31 | 2021-03-31 | Load test device for movable airplane three-foot jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214749412U true CN214749412U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120656115.1U Active CN214749412U (en) | 2021-03-31 | 2021-03-31 | Load test device for movable airplane three-foot jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214749412U (en) |
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2021
- 2021-03-31 CN CN202120656115.1U patent/CN214749412U/en active Active
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