A horizontal high-speed throwing device based on gear rack drive

Abstract

A horizontal high-speed throwing device based on gear rack drive, characterized in that it includes a throwing main machine and a lifting and pitching mechanism. The throwing main machine includes a rolling angle driving mechanism with one end installed on an outer support and the other end connected to a coupling bracket; the lower ends of the outer support and the coupling bracket are both fixed to the front end of the base, the semi-open annular constraint track and the lifting elastic baffle of the throwing mechanism are fixed to the base, the base is installed on a trolley body with a double-axis bidirectional gear rack driving mechanism at the bottom through screws, the buffer is fixed to the trolley body, the roller group and the gear rack group are respectively fixed to the bottom of the trolley body, and jointly support and drive the base to move axially along the rail, the trolley body is constrained by two sets of upper limit guide rails installed on the machine base, and a buffer mechanism is installed at the end of the machine base; the lifting and pitching mechanism includes a gear rack lifting mechanism, one end of the pitch angle hinge mechanism is connected to the support frame through a double hinge, and the other end is connected to the lifting platform, and the rack locking mechanism is fixed to the support frame.

Description

Technical Field

[0001] The invention relates to a horizontal high-speed throwing device based on gear rack drive, which is particularly suitable for occasions requiring different throwing angles, different throwing heights and requiring high-speed throwing tests to be achieved in a short time. Background Art

[0002] For some high-speed test pieces used in casting tests, it is often required to reach a certain linear acceleration (≤5G) and sometimes also be able to perform circular motion (maximum centripetal acceleration allowed ≤2G) to meet the adjustment of circumferential casting posture. At the same time, there are also certain speed and casting height requirements.

[0003] Common throwing methods include catapulting, spinning, ball screw and linear guide feeding. Catapulting is subject to linear acceleration and the speed is difficult to control. The spinning method is subject to centripetal acceleration and the rotation diameter needs to be greater than 22000mm. The ball screw and linear guide feeding method generally allow a speed of 1m / s, which cannot meet the required speed requirements. At the same time, the commonly used throwing methods cannot meet the requirements of adjusting different throwing angles. Summary of the invention

[0004] The purpose of the present invention is to provide a horizontal high-speed throwing device based on gear rack drive to address the deficiencies in the above-mentioned prior art.

[0005] The purpose of the present invention can be achieved by the following technical measures:

[0006] The horizontal high-speed throwing device based on gear rack drive of the present invention comprises a throwing main machine and a lifting and pitching mechanism; the throwing main machine comprises a rolling angle driving mechanism whose one end is installed on an outer support through a shaft neck and the other end is connected to a coupling bracket through a shaft neck; the lower ends of the outer support and the coupling bracket are fixed to the front end of the base, and a lifting elastic baffle is fixed to the rear end of the base, and a semi-open annular constraint track of the throwing mechanism is fixedly installed on the base between the coupling bracket and the lifting elastic baffle; the base is installed on the trolley body through a fixed connecting piece, and front and rear buffers are arranged between the trolley body and the base; the bottom of the trolley body cooperates with the left and right steel rails respectively installed on the machine base through two groups of front and rear roller groups, and the two sides of the trolley body are seated on the left and right groups of upper limit guide rails through sliders; a double-axis bidirectional gear rack driving mechanism and a gear rack mechanism are fixedly installed at the bottom of the trolley body, and the rack guide rails are arranged in parallel on the steel The inner side of the rail; a buffer mechanism is installed at the end of the rail, and the buffer mechanism is hinged to the upper end of the throwing auxiliary servo electric push rod mechanism by an articulation, and the lower end of the throwing auxiliary servo electric push rod mechanism is combined with the machine base by an articulation; the machine base is fixedly installed on the lifting platform; the front end of the lifting platform is combined with the column located at the front central axis position through the lifting and pitching mechanism, and the rear end is combined with the left and right columns located at the rear through the left and right lifting and pitching mechanisms; the lifting and pitching mechanism includes a support frame driven by a gear rack lifting mechanism installed on the column, a rack locking mechanism fixed to the support frame, and a pitch angle hinge mechanism connected to the support frame at one end through a double hinge and connected to the lifting platform at the other end; the gear rack lifting mechanism and the pitch angle hinge mechanism can directly use the different lifting heights of the lifting platform to achieve the adjustment of the pitch angle, and lock it after the posture adjustment is completed, so as to ensure the stability and safety of the overall structure.

[0007] Furthermore, the roll angle driving mechanism in the present invention is composed of a servo motor, a worm gear transmission device driven by a reducer, and a detection and control part.

[0008] The dual-axis bidirectional gear rack drive mechanism is composed of a drive motor, a reducer, a drive gear, a corresponding rack guide rail and a detection part. The casting auxiliary servo electric push rod mechanism is a hydraulic cylinder or a pneumatic cylinder.

[0009] The lifting and pitching mechanism described in the present invention includes hydraulic cylinders respectively installed on the columns, and a pitch angle hinge mechanism with one end connected to the support frame through a double hinge and the other end connected to the lifting platform; the hydraulic cylinder can also be connected to the lifting platform through a servo electric push rod mechanism.

[0010] The lifting and pitching mechanism described in the present invention can also be realized by the following structure: the lifting and pitching mechanism includes support frames respectively installed on the columns and driven by the gear rack lifting mechanism, a rack locking mechanism fixed to the support frame, and a pitch angle hinge mechanism whose one end is connected to the support frame by a double hinge and the other end is connected to the lifting platform; the support frame can also be connected to the lifting platform through a servo electric push rod mechanism.

[0011] Furthermore, the present invention proposes a combination of a gear rack drive based on a long track, a gear rack integral lifting, and a casting angle achieved by rolling and electric push rod pitch adjustment. The semi-open annular constraint track and the lifting elastic baffle in the present invention are fixed to the base to ensure the stability of the target's posture in the axial and radial directions. The base is installed on the frame car body of the double-axis bidirectional gear rack drive mechanism by screws. At the same time, the buffer is fixed to the frame car body, and the roller group and the gear rack mechanism are fixed to the frame car body respectively, which jointly support and drive the base to move along the axial direction of the rail. The rail is installed on the machine base, and the frame car body is constrained by two sets of upper limit guide rails installed on the machine base to prevent rollover after movement into place. A buffer mechanism is installed at the other end of the machine base, and the buffer mechanism is connected to one end of the casting auxiliary servo electric push rod mechanism by hinge, and the other end of the casting auxiliary servo electric push rod mechanism is installed on the machine base by hinge. In addition, a position and speed detection system is installed on the rails, and detection and control sensors are installed on the rolling angle drive mechanism and the gear rack drive mechanism, which can detect and record the status of the target and the throwing host in real time. The buffer mechanism is equipped with a throwing mechanical trigger to ensure the reliability and safety of the target horizontal high-speed throwing.

[0012] After the throwing host adjusts the throwing posture of the target through the rolling angle drive system and the throwing auxiliary servo electric push rod mechanism, the gear rack lifting mechanism is used to raise the throwing host to a certain height, and the rack locking mechanism reliably locks the rack position to ensure the safety of the throwing host.

[0013] The working principle and beneficial effects of the present invention are as follows:

[0014] The present invention adopts a gear rack meshing drive mode, and the rolling angle driving mechanism drives the worm gear to a suitable rolling angle of the target suitable for throwing. The constraint track and lifting elastic baffle of the throwing mechanism fix the target posture. The throwing auxiliary servo electric push rod mechanism adjusts the target to a suitable pitch posture. The gear rack lifting mechanism and the pitch angle hinge mechanism adjust the throwing host to the required test height. Then, the throwing host moves rapidly along the axial direction under the action of the double-axis two-way gear rack driving mechanism. After reaching the required acceleration, it contacts the buffer mechanism. The target is thrown horizontally at a high speed according to the set posture under the action of inertia force.

[0015] The overall structure of the throwing machine is similar to that of a horizontal dynamic balancing machine. The machine base is installed on a lifting platform, which can adjust the different throwing heights required by the target. The main body of the throwing machine is constrained by two sets of upper limit guide rails installed on the machine base. Under the action of the dual-axis bidirectional rack and pinion drive mechanism, different throwing accelerations can be adjusted, and at the same time, rollover can be prevented after the movement is in place. The test product is fixed in the middle of the constraint track dedicated to the throwing mechanism. Under the action of the rolling angle drive mechanism, a certain rolling angle can be achieved in the circumferential direction to ensure that the posture of the test product is adjusted to the optimal level. The rolling angle drive mechanism is equipped with a detection control system for detecting the rolling angle. A displacement and speed detection system is set on the rail to detect and record the position and speed of the axial movement of the throwing machine. The dual-axis bidirectional rack and pinion drive mechanism is equipped with a detection system for real-time detection and recording of the rotation speed.

[0016] The lifting and pitching mechanism adopts rack and pinion to drive the overall lifting. After lifting into place, the rack is locked to ensure accurate transmission, automatic lifting and reliable locking. The whole mechanical system has good rigidity and high reliability.

[0017] Through the above process, the function of horizontal high-speed throwing is achieved by using conventional gear rack drive, which effectively solves the difficult problems of different throwing angles, different throwing heights and the need to achieve high-speed throwing tests in a short time. It can be applied in aerospace, aviation, civil and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the horizontal high-speed throwing device.

[0019] Figure 2 It is the left view of the horizontal high-speed throwing device.

[0020] Figure 3 It is a top view of the horizontal high-speed throwing device.

[0021] Figure 4 This is the main view of the casting host.

[0022] Serial numbers in the figure: 1. Casting main machine, 2. Lifting and pitching mechanism, 3. Rolling angle driving mechanism, 4. Axle neck, 5. External support, 6. Engaging bracket (with energy transfer function), 7. Base, 8. Casting mechanism, 9. Semi-open annular constraint track, 10. Lifting elastic baffle, 11. Double-axis bidirectional gear rack driving mechanism, 12. Connecting bracket, 13. Buffer, 14. Roller group, 15. Gear rack group, 16. Rail, 17. Machine base, 18. Upper limit guide rail, 19. Buffer mechanism, 20. Casting auxiliary servo electric push rod mechanism, 21. Gear rack lifting mechanism, 22. Pitch angle hinge mechanism, 23. Support frame, 24. Lifting platform, 25. Rack locking mechanism. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with embodiments (attached drawings):

[0024] like Figure 1 , 2 As shown in Figures 3 and 4, the horizontal high-speed throwing device based on gear rack drive of the present invention includes a throwing main machine 1 and a lifting and pitching mechanism 2; the throwing main machine includes a rolling angle driving mechanism 3, one end of which is installed on an outer support 5 through a journal 4 and the other end is connected to a coupling bracket 6 through a journal; the lower ends of the outer support 5 and the coupling bracket 6 are both fixed to the front end of the base 7, and a lifting elastic baffle 10 is fixed to the rear end of the base 7, and a semi-open annular constraint track 9 of the throwing mechanism 8 is fixedly installed on the base 7 between the coupling bracket 6 and the lifting elastic baffle 10 (so that a stable support and constraint structure can be formed for the product target, and a posture adjustment of a certain rolling angle can be performed); the base 7 is installed on the trolley body 12 through a fixed connecting piece, and front and rear buffers 13 are provided between the trolley body 12 and the base; the bottom of the trolley body 12 is fixed by The front and rear roller groups 14 cooperate with the left and right rails 16 respectively installed on the machine base 17, and the two sides of the carriage body 12 are seated on the left and right upper limit guide rails 18 through sliders; a dual-axis bidirectional gear rack drive mechanism 11 and a gear rack mechanism 15 are fixedly installed at the bottom of the carriage body 12, and the rack guide rails are arranged parallel to the inner side of the rails 16; a buffer mechanism 19 is installed at the end of the rail 16, and the buffer mechanism 19 is hinged to the upper end of the casting auxiliary servo electric push rod mechanism 20 by an articulated manner, and the lower end of the casting auxiliary servo electric push rod mechanism 20 is combined with the machine base 17 by an articulated manner; the machine base 17 is fixedly installed on the lifting platform 24; the front end of the lifting platform 24 is combined with the column located at the front central axis position by a lifting and pitching mechanism, and the rear end is combined with the left and right columns located at the rear by a left and right lifting and pitching mechanism (see Figure 3 , that is, the columns are arranged in a triangle with one in front and two in the back); the lifting and pitching mechanism includes a support frame 23 driven by a gear rack lifting mechanism 21 installed on the columns, a rack locking mechanism 25 fixed to the support frame, and a pitch angle hinge mechanism 22 connected to the support frame 23 at one end through a double hinge and connected to the lifting platform 24 at the other end; the gear rack lifting mechanism 21 and the pitch angle hinge mechanism 22 can directly use the different lifting heights of the lifting platform 24 to adjust the pitch angle, and lock it after the posture adjustment is completed, so as to ensure the stability and safety of the overall structure.

[0025] The roll angle driving mechanism 3 in the present invention is composed of a servo motor, a worm gear transmission device driven by a reducer, and a detection and control part.

[0026] The dual-axis bidirectional rack and pinion drive mechanism 11 is composed of a drive motor, a reducer, two drive gears, corresponding rack guide rails and a detection part. The casting auxiliary servo electric push rod mechanism 20 is a hydraulic cylinder or a pneumatic cylinder.

[0027] The pitch angle hinge mechanism 22 of the present invention may also adopt a servo electric push rod mechanism having the same structure as the casting auxiliary servo electric push rod mechanism 20 .

[0028] More specifically, the base 7 is mounted on the carriage body 12 with a double-axis bidirectional gear rack drive mechanism 11 installed at the bottom by screws, the buffer 13 is fixed to the carriage body 12, the roller group 14 and the gear rack group 15 are fixed to the bottom of the carriage body 12 respectively, and the two jointly support and drive the base 7 to move axially along the steel rail 16 installed on the machine base 17, and the carriage body 12 is constrained to move by two sets of upper limit guide rails 18 installed on the base 7, and the double-axis bidirectional gear rack drive mechanism 11 can adjust the driving speed according to the different throwing accelerations required by the product target. The buffer mechanism 19 is installed at the other end (end) of the machine base 17, and the buffer mechanism 19 includes a damping wheel system, which can effectively ensure the safety and reliability of the product target during throwing. At the same time, the product target can adjust the pitch angle of the target under the action of the throwing auxiliary servo electric push rod mechanism 20. The lifting and pitching mechanism includes a gear rack lifting mechanism 21 installed on a triangular steel structure column, a pitch angle hinge mechanism 22 having one end connected to a support frame 23 through a double hinge, and the other end connected to a lifting platform 24, a rack locking mechanism 25 fixed to the support frame 23, and a machine base 17 fixed to the lifting platform 24. In this way, the gear rack lifting mechanism 21 and the pitch angle hinge mechanism 22 can adjust their throwing height according to the product target requirements, and after the posture adjustment is completed, they are locked by the rack locking mechanism 25, which can ensure the stability and safety of the overall structure.

Claims

1. A horizontal high-speed throwing device based on gear rack drive, characterized in that: The throwing device comprises a throwing main machine and a lifting and pitching mechanism; the throwing main machine comprises a rolling angle driving mechanism (3) having one end mounted on an outer support (5) via a journal and the other end connected to a joint bracket (6) via a journal; the lower ends of the outer support (5) and the joint bracket (6) are both fixed to the front end of a base (7); a lifting elastic baffle (10) is fixed to the rear end of the base (7); a semi-open annular restraining track (9) of the throwing mechanism (8) is fixedly mounted on the base (7) between the joint bracket (6) and the lifting elastic baffle (10); the base (7) is mounted on a trolley body (12) via a fixed connecting piece, and front and rear buffers (13) are arranged between the trolley body (12) and the base (7); the bottom of the trolley body (12) is connected to the respective roller groups (14) mounted on the machine base (17) via two front and rear roller groups (14) The left and right steel rails (16) cooperate with each other, and the two sides of the carriage body (12) are seated on the left and right sets of upper limit guide rails (18) through sliders; a double-axis bidirectional gear rack drive mechanism (11) and a gear rack mechanism (15) are fixedly installed at the bottom of the carriage body (12), and the rack guide rails are arranged parallel to the inner side of the steel rails (16); a buffer mechanism (19) is installed at the end of the steel rail (16), and the buffer mechanism (19) is hinged to the upper end of the throwing auxiliary servo electric push rod mechanism (20) through an articulated manner, and the lower end of the throwing auxiliary servo electric push rod mechanism (20) is combined with the machine base (17) through an articulated manner; the machine base is fixedly installed on the lifting platform (24); the front end of the lifting platform is combined with the column located at the front central axis position through a lifting and pitching mechanism, and the rear end is combined with the left and right columns located at the rear through the left and right lifting and pitching mechanisms.

2. The horizontal high-speed throwing device based on gear rack drive according to claim 1 is characterized in that: The rolling angle driving mechanism (3) is composed of a servo motor, a worm gear transmission device driven by a reducer, and a detection and control part.

3. The horizontal high-speed throwing device based on gear rack drive according to claim 1 is characterized in that: The dual-axis bidirectional rack and pinion drive mechanism (11) is composed of a drive motor, a reducer, two drive gears, corresponding rack guide rails and a detection part.

4. The horizontal high-speed throwing device based on gear rack drive according to claim 1 is characterized in that: The casting auxiliary servo electric push rod mechanism (20) is a hydraulic cylinder or a pneumatic cylinder.

5. The horizontal high-speed throwing device based on gear rack drive according to claim 1 is characterized in that: The lifting and pitching mechanism comprises hydraulic cylinders respectively mounted on the uprights, and a pitching angle hinge mechanism (22) having one end connected to a support frame (23) via a double hinge and the other end connected to a lifting platform (24).

6. The horizontal high-speed throwing device based on gear rack drive according to claim 5 is characterized in that: The hydraulic cylinder is connected to the lifting platform (24) via a servo electric push rod mechanism.

7. The horizontal high-speed throwing device based on gear rack drive according to claim 1 is characterized in that: The lifting and pitching mechanism comprises a support frame (23) respectively mounted on a column and driven by a gear rack lifting mechanism (21), a rack locking mechanism (25) fixed to the support frame (23), and a pitch angle hinge mechanism (22) having one end connected to the support frame (23) via a double hinge and the other end connected to a lifting platform (24).

8. The horizontal high-speed throwing device based on gear rack drive according to claim 7 is characterized in that: The support frame (23) is connected to the lifting platform (24) via a servo electric push rod mechanism.

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