Engine accessory interface type rotational speed direct reading device

Abstract

The utility model relates to a rotating speed reading technical field especially, it relates to a kind of engine accessory interface type rotating speed direct reading device, including shaft head, the one end of shaft head is connected with ball cover assembly, the inside movable joint of ball cover assembly has rotary block, ball cover assembly is used to drive shaft head to drive rotary block to rotate around the own central axis respectively, the one end of rotary block is connected with fixed shaft, the outside of fixed shaft is equipped with connecting plate, output shaft is rotatably connected on the connecting plate.When the rotating speed is read, only need to connect shaft head and output shaft with the output shaft of hydraulic motor and the input shaft of engine, then the rotation of shaft head is synchronized by the flexible shaft core connected with rotary block, and the output of flexible shaft core is synchronized to mechanical counter by the cooperation of first bevel gear and second bevel gear, and the rotation speed of output shaft is read by time relay connected on mechanical counter.

Description

Technical Field

[0001] This utility model relates to the field of speed reading technology, and in particular to an engine accessory interface type direct speed reading device. Background Technology

[0002] Aero engines inherently include sensor interfaces for measuring rotor speed. However, the aero engines used in the current project are all products designed in the 1950s or 1960s, and their speed measurement sensors are still at the analog signal stage. This causes inconvenience for current product development and modification. In view of this problem, the current solution is to reuse the generator interface on the original engine casing. A short shaft that meshes with the original gear is added to the generator mounting location and led out to the outside. A laser speed reading device is then added to the externally connected reading gear circle. In this way, the reading signal is directly transmitted to the vehicle and engine control computer for monitoring and operation of the engine's operating status.

[0003] However, existing direct speed reading solutions generally employ a rigid shaft connection structure, where a rigid shaft is fixed to the engine input shaft. Speed ​​reading elements such as gears and gratings are installed on the rigid shaft, and sensors are used to collect speed data. However, the installation area of ​​aero-engines is typically extremely compact, with a dense distribution of various pipelines and accessories. In this scenario, the installation space for the rigid shaft is severely limited. This not only makes precise docking between the rigid shaft and the engine input shaft difficult but also results in a cumbersome and time-consuming installation process for the speed reading device. This fails to meet the efficiency requirements for ground startup of non-aero-engine equipment, thus affecting the overall progress of engine startup. Therefore, this application aims to address the problem that existing speed reading solutions, which mostly use rigid shaft connections, suffer from installation difficulties, inconsistent docking accuracy, and cumbersome and time-consuming processes due to the compact installation space and dense pipelines of aero-engines, severely impacting ground startup efficiency. A direct speed reading device with an engine accessory interface is proposed. Utility Model Content

[0004] To overcome the problem that existing speed reading solutions mostly use rigid shaft connections, i.e., a rigid shaft is fixed on the engine input shaft, and the speed is collected by installing gears, gratings and other components in conjunction with sensors, the installation space of aero engines is extremely compact, and the pipelines and accessories are dense, which restricts the installation of rigid shafts, makes it difficult to achieve precise docking with the input shaft, and the process is cumbersome and time-consuming, affecting ground start-up efficiency and operation progress.

[0005] The technical solution of this utility model is as follows: an engine accessory interface type direct speed reading device, including a coupling head, one end of which is connected to a ball cover assembly, and a rotating block is movably connected inside the ball cover assembly. The ball cover assembly is used to drive the coupling head to drive the rotating block to rotate around its own central axis. One end of the rotating block is connected to a fixed shaft, and a connecting plate is sleeved on the outside of the fixed shaft. An output shaft is rotatably connected to the connecting plate. A synchronization component is sleeved on the outer surfaces of the output shaft and the fixed shaft. The synchronization component is used to drive the fixed shaft to drive the output shaft to rotate around its own central axis.

[0006] Preferably, a connecting ball is connected to the outer surface of the rotating block, and a rotating ball is rotatably connected inside the connecting ball. Push plates are connected to both sides of the rotating block, and a multi-stage electric push rod is rotatably connected to one side of the push plate. A connecting strip is connected to one side of the multi-stage electric push rod.

[0007] Preferably, the spherical cover assembly includes a fixing plate, one end of which is connected to a connecting rod, one end of which is connected to a connecting rod head, one end of which is connected to a first cover, one end of which is provided with a second cover, and assembly pieces are connected to the outer surfaces of both the second cover and the first cover, and the assembly pieces respectively provided on the second cover and the first cover are connected by bolts.

[0008] Preferably, the upper and lower ends of the connecting plate are connected to fixed rods, and a movable plate is connected to the fixed rods. The movable plate is rotatably connected to the second cover.

[0009] Preferably, the synchronization component includes a fixed head connected to a fixed shaft, a first meshing wheel connected to the outer surface of the fixed head, a second meshing wheel provided on one side of the first meshing wheel, the teeth of the second meshing wheel meshing with the teeth of the first meshing wheel, and the second meshing wheel fixedly connected to the output shaft.

[0010] Preferably, one end of the fixing head is rotatably connected to a combination head, and a connecting head is provided on the inner side of the combination head. The connecting head is fitted with the fixing head, one end of the connecting head is connected to a flexible shaft core, and one end of the combination head is connected to a bent tube cover.

[0011] Preferably, one end of the curved tube cover is connected to a protective cover, one end of the flexible shaft core is connected to a first bevel gear, a second bevel gear is rotatably connected inside the protective cover, the teeth of the second bevel gear mesh with the teeth of the first bevel gear, a reading shaft is connected to the second bevel gear, one end of the reading shaft is connected to a mechanical counter, and a time relay is electrically connected to the outer surface of the mechanical counter.

[0012] The beneficial effects of this utility model are: 1. When it is necessary to read the rotation speed, simply connect the coupling head and the output shaft to the output shaft of the hydraulic motor and the input shaft of the engine, respectively. Then, use the flexible shaft core connected to the rotating block to synchronize the rotation of the coupling head. The output of the flexible shaft core is synchronized to the mechanical counter through the cooperation of the first bevel gear and the second bevel gear. The rotation speed of the output shaft is read through the time relay connected to the mechanical counter. 2. When it is necessary to adjust the position of the rotating block inside the first housing, two multi-stage electric push rods can be driven to extend and retract in opposite directions simultaneously, so that the rotating block can rotate around the longitudinal central axis inside the first housing, thereby adjusting the installation direction of the connecting head, so that the speed reading device can adapt to different working conditions. 3. By using a flexible shaft, the rotational motion of the hydraulic motor can be transmitted to a remote mechanical tachometer in a one-to-one, zero-delay manner. There are no sensors, circuits, or signal conditioners in between, eliminating the risk of electromagnetic interference, signal loss, or electronic component failure. In addition, in a compact vehicle layout, the area between the power take-off unit and the dashboard in the cab may be filled with obstacles such as the engine, transmission, frame, and pipelines. The flexible shaft can bend and route its cable like a cable to bypass these obstacles, making it convenient for the user to read the motor speed. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of the direct speed reading device of this utility model; Figure 2 The diagram shown is a three-dimensional structural schematic of the rotating block of the direct speed reading device of this utility model; Figure 3 The diagram shown is a three-dimensional structural schematic of the first meshing wheel of the direct speed reading device of this utility model; Figure 4 The diagram shown is a three-dimensional structural schematic of the connector of the direct speed reading device of this utility model; Figure 5 The diagram shown is a three-dimensional structural schematic of the time relay of the direct speed reading device of this utility model.

[0014] Explanation of reference numerals in the attached drawings: 101, connecting head; 102, fixing plate; 103, connecting rod; 104, connecting rod head; 105, first cover; 106, second cover; 107, assembly piece; 201, connecting strip; 202, multi-stage electric push rod; 203, push piece; 301, rotating block; 302, connecting ball; 303, rotating ball; 304, fixed shaft; 305, connecting plate; 306, fixing rod; 307, movable plate; 401, fixing head; 402, first meshing wheel; 403, second meshing wheel; 404, output shaft; 405, connecting piece; 501, assembly head; 502, connecting head; 503, flexible shaft core; 504, protective cover; 505, first bevel gear; 506, second bevel gear; 507, mechanical counter; 508, time relay; 509, bent tube cover; 510, reading shaft. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] refer to Figures 1-5 The structure shown is an engine accessory interface type direct speed reading device, including a coupling head 101. One end of the coupling head 101 is connected to a ball cover assembly. A rotating block 301 is movably connected inside the ball cover assembly. The ball cover assembly is used to drive the coupling head 101 to drive the rotating block 301 to rotate around its own central axis. One end of the rotating block 301 is connected to a fixed shaft 304. A connecting plate 305 is sleeved on the outside of the fixed shaft 304. An output shaft 404 is rotatably connected to the connecting plate 305. A synchronization assembly is sleeved on the outer surfaces of the output shaft 404 and the fixed shaft 304. The synchronization assembly is used to drive the fixed shaft 304 to drive the output shaft 404 to rotate around its own central axis.

[0017] Among them, a connecting plate 405 is sleeved on the outer surface of the output shaft 404, and the connecting plate 405 is connected to the protective cover 504; When it is necessary to read the rotational speed, simply connect the coupling head 101 and the output shaft 404 to the motor output shaft of the hydraulic motor and the input shaft of the engine, respectively. Then, the rotation of the coupling head 101 is synchronized by the flexible shaft core 503 connected to the rotating block 301. The output of the flexible shaft core 503 is synchronized to the mechanical counter 507 by the cooperation of the first bevel gear 505 and the second bevel gear 506. The rotational speed of the output shaft 404 is read by the time relay 508 connected to the mechanical counter 507.

[0018] Furthermore, a connecting ball 302 is connected to the outer surface of the rotating block 301, and a rotating ball 303 is rotatably connected inside the connecting ball 302. Push plates 203 are connected to both sides of the rotating block 301. A multi-stage electric push rod 202 is rotatably connected to one side of the push plate 203, and a connecting strip 201 is connected to one side of the multi-stage electric push rod 202.

[0019] When it is necessary to adjust the position of the rotating block 301 inside the first cover 105, two multi-stage electric push rods 202 can be driven to extend and retract in opposite directions, so that the rotating block 301 can rotate around the longitudinal central axis inside the first cover 105, thereby adjusting the installation direction of the connecting head 101, so that the speed reading device can be adapted to use under different working conditions.

[0020] Furthermore, the ball cover assembly includes a fixing plate 102, one end of which is connected to a connecting rod 103, one end of which is connected to a connecting rod head 104, one end of which is connected to a first cover 105, one end of which is provided with a second cover 106, and both the outer surfaces of the second cover 106 and the first cover 105 are connected with assembly pieces 107, which are respectively provided on the second cover 106 and the first cover 105 and are connected by bolts.

[0021] Furthermore, the upper and lower ends of the connecting plate 305 are both connected to fixed rods 306, and the fixed rods 306 are connected to movable plates 307, which are rotatably connected to the second cover 106.

[0022] Furthermore, the synchronization component includes a fixed head 401, which is connected to a fixed shaft 304. A first meshing wheel 402 is connected to the outer surface of the fixed head 401, and a second meshing wheel 403 is provided on one side of the first meshing wheel 402. The teeth of the second meshing wheel 403 mesh with the teeth of the first meshing wheel 402, and the second meshing wheel 403 is fixedly connected to the output shaft 404.

[0023] The rotating fixed head 401 drives the first meshing wheel 402 to rotate, and the rotating first meshing wheel 402 synchronously drives the second meshing wheel 403 to rotate, and the rotating second meshing wheel 403 drives the output shaft 404 to rotate, so as to realize the rotational transmission of the coupling head 101.

[0024] Furthermore, a combination head 501 is rotatably connected to one end of the fixed head 401, and a connecting head 502 is provided on the inner side of the combination head 501. The connecting head 502 is fitted with the fixed head 401, and a flexible shaft core 503 is connected to one end of the connecting head 502. A bent tube cover 509 is connected to one end of the combination head 501.

[0025] The flexible shaft core 503 allows the rotational motion of the hydraulic motor to be transmitted to a remote mechanical tachometer in a one-to-one, zero-delay manner, without the presence of sensors, circuits, or signal conditioners. This eliminates the risk of electromagnetic interference, signal loss, or electronic component failure. Furthermore, given the compact layout of vehicles, the area between the power take-off unit and the dashboard may be filled with obstacles such as the engine, transmission, frame, and pipelines. The flexible shaft core 503 can bend and route its cable around these obstacles, making it convenient for the user to read the motor's rotational speed.

[0026] Furthermore, one end of the curved tube cover 509 is connected to a protective cover 504, one end of the flexible shaft core 503 is connected to a first bevel gear 505, a second bevel gear 506 is rotatably connected inside the protective cover 504, the teeth of the second bevel gear 506 mesh with the teeth of the first bevel gear 505, a reading shaft 510 is connected to the second bevel gear 506, one end of the reading shaft 510 is connected to a mechanical counter 507, and a time relay 508 is electrically connected to the outer surface of the mechanical counter 507.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An engine accessory interface type direct speed reading device, characterized in that: The device includes a coupling head (101), one end of which is connected to a ball cover assembly. A rotating block (301) is movably connected inside the ball cover assembly. The ball cover assembly is used to drive the coupling head (101) to rotate the rotating block (301) around its own central axis. One end of the rotating block (301) is connected to a fixed shaft (304). A connecting plate (305) is sleeved on the outside of the fixed shaft (304). An output shaft (404) is rotatably connected to the connecting plate (305). A synchronization component is sleeved on the outer surfaces of the output shaft (404) and the fixed shaft (304). The synchronization component is used to drive the fixed shaft (304) to rotate the output shaft (404) around its own central axis.

2. The engine accessory interface type direct speed reading device according to claim 1, characterized in that: A connecting ball (302) is connected to the outer surface of the rotating block (301), and a rotating ball (303) is rotatably connected inside the connecting ball (302). Push plates (203) are connected to both sides of the rotating block (301), and a multi-stage electric push rod (202) is rotatably connected to one side of the push plate (203). A connecting strip (201) is connected to one side of the multi-stage electric push rod (202).

3. The engine accessory interface type direct speed reading device according to claim 1, characterized in that: The spherical cover assembly includes a fixing plate (102), one end of which is connected to a connecting rod (103), one end of which is connected to a connecting rod head (104), one end of which is connected to a first cover (105), one end of which is provided with a second cover (106), and a combination piece (107) is connected to the outer surface of both the second cover (106) and the first cover (105). The combination pieces (107) respectively provided on the second cover (106) and the first cover (105) are connected by bolts.

4. The engine accessory interface type direct speed reading device according to claim 3, characterized in that: The upper and lower ends of the connecting plate (305) are both connected to fixed rods (306), and a movable plate (307) is connected to the fixed rods (306). The movable plate (307) is rotatably connected to the second cover (106).

5. The engine accessory interface type direct speed reading device according to claim 1, characterized in that: The synchronization component includes a fixed head (401) connected to a fixed shaft (304). A first meshing wheel (402) is connected to the outer surface of the fixed head (401). A second meshing wheel (403) is provided on one side of the first meshing wheel (402). The teeth of the second meshing wheel (403) mesh with the teeth of the first meshing wheel (402). The second meshing wheel (403) is fixedly connected to the output shaft (404).

6. The engine accessory interface type direct speed reading device according to claim 5, characterized in that: One end of the fixed head (401) is rotatably connected to the combined head (501), and the inner side of the combined head (501) is provided with a connecting head (502). The connecting head (502) is fitted with the fixed head (401), one end of the connecting head (502) is connected to a flexible shaft core (503), and one end of the combined head (501) is connected to a bent tube cover (509).

7. The engine accessory interface type direct speed reading device according to claim 6, characterized in that: One end of the curved tube cover (509) is connected to a protective cover (504), one end of the flexible shaft core (503) is connected to a first bevel gear (505), a second bevel gear (506) is rotatably connected inside the protective cover (504), the teeth of the second bevel gear (506) mesh with the teeth of the first bevel gear (505), a reading shaft (510) is connected to the second bevel gear (506), one end of the reading shaft (510) is connected to a mechanical counter (507), and a time relay (508) is electrically connected to the outer surface of the mechanical counter (507).

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