Jack adjusting device for heavy airplane

Abstract

The utility model relates to the technical field of jacks, and discloses a jack adjusting device for a heavy airplane, which comprises a base and a jack main body arranged at the top of the base, a linkage sleeve plate is sleeved outside the output end of the jack main body, an extension plate is fixedly connected to the surface of the outer ring structure of the linkage sleeve plate, and a pressure sensor is arranged at the bottom of the extension plate. The top of the base is provided with an internal threaded sleeve aligned with the pressure sensor, the inner side of the internal threaded sleeve is in threaded connection with an adjusting threaded rod, and the top of the adjusting threaded rod can make contact with the pressure sensing face of the pressure sensor in a jacking mode. The linkage sleeve plate, the pressure sensor, the inner threaded sleeve, the adjusting threaded rod, the auxiliary twisting assembly and the semi-open guide cylinder form an auxiliary adjusting device, and then after the auxiliary adjusting device is combined with the base and the jack body for use, pressure detection can be conducted on the supporting state of the whole device while the requirement for stable lifting of an airplane is met; therefore, a user can find the use fault of the whole device in time.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to a jack adjusting device for heavy aircraft. Background Art

[0002] A jack refers to a light and small lifting equipment that uses a rigid lifting piece as a working device and can push heavy objects up within a small stroke of a top support or a bottom support claw. With the continuous development of jack technology, the application scope of jacks is also expanding. For example, it has developed from being used in traditional small equipment jacking operations to jacking into and lifting large equipment such as aircraft.

[0003] The jacks that can press down the aircraft have long been in the public domain. For example, the patent document with application number 201921838432.4 proposes that "the U-shaped head bracket can match the jacking part of the front of the aircraft, and the support pad can conflict with the jacking part of the front of the aircraft, so that the head bracket matches the shape of the front fuselage of the aircraft; and the multiple inclined tubes and inclined braces arranged around the circumference of the jack body can well disperse the pressure brought by the aircraft fuselage to the jack body. The inclined tubes are hinged to the outer shell, and the inclined braces are hinged to the inclined tubes and the base, which is convenient for the hydraulic jack to be retracted. The support plate at the bottom of the inclined-stayed tube also increases its own stability", however, the safety precautions of the above-mentioned prior art during the use of the jack are "a manual lock nut is sleeved on the piston rod of the actuator piston, and the manual safety lock nut can be locked when the piston rod of the actuator piston rises to the predetermined position where jacking is required, thereby maintaining the jacking of the aircraft fuselage", but in actual use, the non-standard operation of some operators and the easy forgetfulness of manual operations have a certain probability of causing the safety measures of the above-mentioned prior art to fail, and the problem cannot be solved from the source. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a jack adjustment device for a heavy aircraft, which solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a jack adjustment device for heavy aircraft, comprising a base, a jack body installed on the top of the base, a linkage sleeve plate is sleeved on the output end of the jack body, an extension plate is fixedly connected to the outer ring structure surface of the linkage sleeve plate, and a pressure sensor is installed at the bottom of the extension plate;

[0006] An internal threaded sleeve aligned with the pressure sensor is installed on the top of the base, an adjusting threaded rod is threadedly connected to the inner side of the internal threaded sleeve, and the top of the adjusting threaded rod can be in pressure contact with the pressure-sensitive surface of the pressure sensor.

[0007] Preferably, a threaded hole is provided on the surface of the base output end, and a clearance hole aligned with the threaded hole is provided on the inner side of the top of the linkage sleeve plate, and screws are passed through the clearance hole between the linkage sleeve plate and the base output end until they are threadedly connected inside the threaded hole, so that the linkage sleeve plate and the base output end can be detachably installed, thereby facilitating subsequent disassembly and maintenance and improving modularity and independence during use.

[0008] The inner wall of the internal threaded sleeve is provided with a plurality of weight-reducing grooves to reduce the weight of the overall device, and the surface of the adjusting threaded rod is provided with a guide groove to facilitate the subsequent use of the matching structure, and an auxiliary twisting component is installed in the guide groove.

[0009] The auxiliary twisting assembly is composed of an annular plate, an inner clamping plate and an outer support plate. The two ends of the inner clamping plate are respectively clamped in the guide groove and fixedly connected to the inner wall of the annular plate. The auxiliary twisting assembly can be used as a force-applying structure for adjusting the rotation of the threaded rod, which is convenient for users to adjust the threaded rod.

[0010] Preferably, the annular plate is movably sleeved with the adjusting threaded rod, and one end of the outer support plate is fixedly connected to the surface of the annular plate, so that the outer support plate is convenient for the user to apply force to rotate, thereby improving the convenience of use.

[0011] Preferably, the number of the extension plates is the same as the number of the pressure sensors and is no less than two, and both are arranged in a circular array based on the central axis of the output end of the jack body, thereby creating a multi-point detection and multiple data comparison effect.

[0012] Preferably, a semi-open guide cylinder is fixedly connected to the bottom of the extension plate, and the inner side of the top of the semi-open guide cylinder is provided with a protective cover for the pressure sensor, thereby providing peripheral protection for the pressure sensor to avoid collision with other structures during use; a guide hole that can be engaged with the adjusting threaded rod is provided on the inner side of the bottom of the semi-open guide cylinder, thereby improving the stability of the adjusting threaded rod during reciprocating movement.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model comprises a linkage sleeve, a pressure sensor, an internal threaded sleeve, an adjusting threaded rod, an auxiliary twisting assembly and a semi-open guide cylinder to form an auxiliary adjusting device, which is then used in combination with a base and a jack body to perform pressure detection on the supporting state of the overall device while ensuring stable lifting of the aircraft, so that the user can promptly discover any malfunction in the overall device.

[0015] 2. During use of the auxiliary adjustment device provided in the utility model, even if the pressure sensor in the auxiliary adjustment device fails, the auxiliary adjustment device can still provide auxiliary support to the jack body, thereby cushioning the rapid fall of the aircraft and creating safe time for the maintenance personnel to escape safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a top view schematic diagram of the structure of the utility model;

[0018] Figure 3 It is a bottom view schematic diagram of the structural linkage sleeve of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the internal thread sleeve of the utility model structure;

[0020] Figure 5 It is an enlarged schematic diagram of the structural adjustment threaded rod of the utility model;

[0021] Figure 6 It is an enlarged schematic diagram of the structural auxiliary twisting assembly of the utility model.

[0022] In the figure: 1. base; 2. jack body; 3. linkage sleeve; 4. pressure sensor; 5. internal threaded sleeve; 6. adjusting threaded rod; 7. auxiliary twisting assembly; 8. semi-open guide cylinder. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-6 A jack adjustment device for heavy aircraft includes a base 1, a jack body 2 installed on the top of the base 1, a linkage sleeve 3 is sleeved on the output end of the jack body 2, a threaded hole is opened on the surface of the output end of the base 1, and a clearance hole aligned with the threaded hole is opened on the inner side of the top of the linkage sleeve 3, and the linkage sleeve 3 and the output end of the base 1 are penetrated by screws through the clearance hole until they are threadedly connected inside the threaded hole, so that the linkage sleeve 3 and the output end of the base 1 can be detachably installed, thereby facilitating subsequent disassembly and maintenance, and improving modularity and independence during use, and an extension plate is fixedly connected to the outer ring structure surface of the linkage sleeve 3, and a pressure sensor 4 is installed at the bottom of the extension plate;

[0025] The number of the extension plates is the same as the number of the pressure sensors 4 and is not less than two and is arranged in a circular array based on the central axis of the output end of the jack body 2, thereby creating a multi-point detection and multiple data comparison effect;

[0026] An internal threaded sleeve 5 aligned with the pressure sensor 4 is installed on the top of the base 1. The inner wall of the internal threaded sleeve 5 is provided with a plurality of weight-reducing grooves to reduce the weight of the overall device. A guide groove is provided on the surface of the adjusting threaded rod 6 to facilitate the subsequent use of the matching structure. An auxiliary twisting assembly 7 is installed in the guide groove. The auxiliary twisting assembly 7 is composed of an annular plate, an inner clamping plate and an outer support plate. The two ends of the inner clamping plate are respectively clamped in the guide groove and fixedly connected to the inner wall of the annular plate. The auxiliary twisting assembly 7 can be used as a force-applying structure for rotating the adjusting threaded rod 6, which is convenient for users to adjust the adjusting threaded rod 6. The inner side of the internal threaded sleeve 5 is threadedly connected with the adjusting threaded rod 6, and the top of the adjusting threaded rod 6 can be in pressure contact with the pressure-sensitive surface of the pressure sensor 4.

[0027] The annular plate is movably connected to the adjusting threaded rod 6, and one end of the outer support plate is fixedly connected to the surface of the annular plate, which is convenient for the user to apply force to rotate by the outer support plate, thereby improving the convenience of use. The bottom of the extension plate is fixedly connected with a semi-open guide cylinder 8, and the inner side of the top of the semi-open guide cylinder 8 is used to protect the pressure sensor 4, thereby providing peripheral protection for the pressure sensor 4 to avoid collision with other structures during use. A guide hole that can be engaged with the adjusting threaded rod 6 is provided on the inner side of the bottom of the semi-open guide cylinder 8, thereby improving the stability of the adjusting threaded rod 6 during reciprocating movement.

[0028] Working principle:

[0029] Embodiment 1

[0030] When in use, the whole device is moved to the bottom of the aircraft to be supported, and then the jack body 2 is started, and the output end of the jack body 2 rises to lift the aircraft to be supported, meeting the use requirements of aircraft lifting and maintenance. During the output operation of the jack body 2, the linkage sleeve 3 and the pressure sensor 4 will synchronously move the output end of the jack body 2 upward;

[0031] After the jack body 2 is output to the specified position, hold the auxiliary twisting assembly 7 and apply twisting force to the adjusting threaded rod 6, so that the adjusting threaded rod 6 rotates and rises inside the internal threaded sleeve 5, and after each 360-degree rotation, the auxiliary twisting assembly 7 can be adapted to move down along the guide groove to avoid structural interference, and thus follow the above operation until the top end of the adjusting threaded rod 6 is in top pressure contact with the pressure sensing surface of the pressure sensor 4, so that the pressure sensor 4 transmits pressure data to the background equipment in the prior art;

[0032] Later, during the use of the jack body 2, when the pressure data value output by the pressure sensor 4 begins to fluctuate greatly, it means that the overall device's support for the aircraft has failed and needs to be checked in time. On the contrary, if the pressure data value output by the pressure sensor 4 is stable, it means that the overall device is in normal use.

[0033] Embodiment 2

[0034] When in use, the whole device is moved to the bottom of the aircraft to be supported, and then the jack body 2 is started, and the output end of the jack body 2 rises to lift the aircraft to be supported, meeting the use requirements of aircraft lifting and maintenance. During the output operation of the jack body 2, the linkage sleeve 3 and the pressure sensor 4 will synchronously move the output end of the jack body 2 upward. After the jack body 2 is output to the specified position, the auxiliary twisting assembly 7 is held and a twisting force is applied to the adjusting threaded rod 6, so that the adjusting threaded rod 6 is rotated and raised inside the internal threaded sleeve 5, and each rotation is 360 degrees. Afterwards, the auxiliary twisting assembly 7 can be adapted to move downward along the guide groove to avoid structural interference. According to the above operation, the top end of the threaded rod 6 is adjusted to make pressure contact with the pressure-sensitive surface of the pressure sensor 4, so that the pressure sensor 4 transmits pressure data to the background equipment in the prior art. In the subsequent use of the jack body 2, when the pressure data value output by the pressure sensor 4 begins to fluctuate greatly, it means that the overall device has a fault in supporting the aircraft and needs to be checked in time. On the contrary, the pressure data value output by the pressure sensor 4 is output stably, which means that the overall device is in normal use.

[0035] In extreme cases, when the pressure sensor 4 fails and cannot issue a warning, the set support of the adjusting threaded rod 6 and the internal threaded sleeve 5 can cushion the rapid fall of the aircraft and still create safe time for the maintenance personnel to escape safely.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the fill pattern is only for distinguishing the layers, without any other limitation.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A jack adjustment device for a heavy aircraft, comprising a base (1) and a jack body (2) mounted on the top of the base (1), characterized in that: The output end of the jack body (2) is covered with a linkage sleeve (3), the outer ring structure surface of the linkage sleeve (3) is fixedly connected with an extension plate, and the bottom of the extension plate is installed with a pressure sensor (4); An internal threaded sleeve (5) aligned with the pressure sensor (4) is installed on the top of the base (1); an adjusting threaded rod (6) is threadedly connected to the inner side of the internal threaded sleeve (5); and the top of the adjusting threaded rod (6) can be in pressure contact with the pressure-sensitive surface of the pressure sensor (4).

2. A jack adjustment device for heavy aircraft according to claim 1, characterized in that: A threaded hole is provided on the surface of the output end of the base (1), and a clearance hole aligned with the threaded hole is provided on the inner side of the top of the linkage sleeve (3). A screw is passed through the clearance hole between the linkage sleeve (3) and the output end of the base (1) until the screw is connected inside the threaded hole, so that the linkage sleeve (3) and the output end of the base (1) can be detachably installed.

3. A jack adjustment device for heavy aircraft according to claim 1, characterized in that: The inner wall of the internal threaded sleeve (5) is provided with a plurality of weight-reducing grooves, the surface of the adjusting threaded rod (6) is provided with a guide groove, and an auxiliary twisting assembly (7) is sleeved in the guide groove.

4. A jack adjustment device for heavy aircraft according to claim 3, characterized in that: The auxiliary twisting assembly (7) is composed of an annular plate, an inner clamping plate and an outer support plate, and the two ends of the inner clamping plate are respectively clamped in the guide groove and fixedly connected to the inner wall of the annular plate.

5. A jack adjustment device for heavy aircraft according to claim 4, characterized in that: The annular plate is movably sleeved with the adjusting threaded rod (6), and one end of the outer support plate is fixedly connected to the surface of the annular plate.

6. The jack adjustment device for heavy aircraft according to claim 1, characterized in that: The number of the extension plates is the same as the number of the pressure sensors (4) and is no less than two and is distributed in a circular array based on the central axis of the output end of the jack body (2).

7. The jack adjustment device for heavy aircraft according to claim 1, characterized in that: A semi-open guide cylinder (8) is fixedly connected to the bottom of the extension plate, the inner side of the top of the semi-open guide cylinder (8) is provided with a protective sleeve for the pressure sensor (4), and a guide hole capable of being engaged with the adjusting threaded rod (6) is provided on the inner side of the bottom of the semi-open guide cylinder (8).

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