Strip placing clamp for certain type of helicopter clock

Abstract

The utility model relates to a strip placing clamp for a certain type of helicopter clock. The strip placing clamp comprises a strip pressing assembly, a rotating assembly and a guide part, the strip pressing assembly is arranged above the strip placing pressing block and presses down the strip placing pressing block; the rotating assembly is connected with the guiding part, the guiding part drives the rotating assembly to be matched with the spline shaft, the spline shaft cannot rotate automatically, the rotating assembly can only be manually rotated to rotate the spline shaft, and therefore the gear system rotates. When the strip placing clamp works, the strip placing clamp and a clock are fixed firstly, then the strip pressing assembly is rotated to press the strip placing pressing block downwards, the downwards-pressing state is kept, meanwhile, the rotating assembly slides towards the direction of the clock through the guiding part so that the rotating assembly and the spline shaft can be installed in a matched mode, the rotating assembly is rotated manually, the spline shaft rotates along with the rotating assembly, and therefore a gear system rotates to conduct manual strip placing. The gear has the advantages that the gear is not prone to being damaged, the structure is simple, and mounting and dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of a bar placing clamp for a helicopter clock, in particular to a bar placing clamp used for a certain type of helicopter clock. Background Art

[0002] At present, when repairing the clock of a certain type of helicopter, the clock needs to be released. During the release process, the clock rotates at high speed and with great force, and the release block inside the clock is always pressed down. When releasing the clock, the release block is first pressed down toward the inside of the clock, and the clock starts to release, and the gear system of the clock starts to rotate. However, if the release block is accidentally released during this process, the release of the clock will stop immediately, generating a certain impact force, causing the high-precision gears of the clock that are rotating to be damaged. Moreover, when the clock starts to release, the release process cannot be stopped midway, and the speed of the release process cannot be controlled. When it is necessary to stop midway, the release block can only be released, but this will damage the gears of the clock.

[0003] Therefore, based on customer feedback regarding the deficiencies in the existing clock strip placement process, the inventors have made further improvements based on the proposed defects and deficiencies to overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a bar clamp for a certain type of helicopter clock which is not easy to damage gears and has a simple structure and is easy to install and disassemble.

[0005] The purpose of the utility model is achieved through the following technical solutions: a strip-releasing fixture for a certain type of helicopter clock, comprising a clock, wherein a gear system is provided on the clock. When the strip is released, a strip-releasing pressure block is provided on the gear system. The strip-releasing pressure block is kept pressed downward, and the gear system rotates, and a spline shaft provided on the gear system also rotates accordingly. The utility model is characterized in that the fixture further comprises a strip-releasing assembly, a rotating assembly, and a guide portion.

[0006] The pressure strip assembly is arranged above the pressure strip block, and the pressure strip assembly presses the pressure strip block downward and keeps it in the pressed state;

[0007] The rotating assembly is connected to the guide part, and the guide part drives the rotating assembly to cooperate with the spline shaft, so that the spline shaft cannot rotate on its own. The rotating assembly can only be manually rotated to rotate the spline shaft, thereby rotating the gear system;

[0008] When the strip release clamp is working, first fix the strip release clamp to the clock, then rotate the strip pressure block to press it down and keep it pressed down. At the same time, slide the rotating assembly toward the clock through the guide part so that it can be installed with the spline shaft. Manually rotate the rotating assembly, the spline shaft will rotate accordingly, and then the gear system will rotate to manually release the strip.

[0009] As a preferred technical solution of the present application, the rotating assembly includes a rotating rod and a spline sleeve;

[0010] One end of the rotating rod is connected to a lever arranged perpendicular to it, and the other end is connected to a spline sleeve. The rotating rod is inserted into the guide portion from top to bottom and the protruding end is a spline sleeve, which is adapted to be installed on the spline shaft of the clock;

[0011] By rotating the lever, the spline sleeve at the tail end of the rotating rod rotates, and the spline shaft connected to it rotates, driving the gear system to rotate, thereby controlling the speed of the strip unwinding process.

[0012] As a preferred technical solution of the present application, it also includes a locking part; the locking part includes a nut A, a nut B and a sealing ring; the sealing ring is sleeved outside the rotating rod, and an adjustment pad is also provided outside the sealing ring. The nut A is also sleeved outside the rotating rod and located above the sealing ring. The nut A is connected to the nut B, and the nut B is sleeved outside the adjustment pad.

[0013] When the rotating rod is inserted into the guide part, nut A rests on the outside of the guide part, and nut B, sealing ring and adjusting pad are inserted into the guide part along with the rotating rod. When nut A is rotated, nut B connected to it rotates, so that the spline sleeve has a resistance greater than the driving force of the spline shaft, and the gear system cannot rotate on its own.

[0014] As a preferred technical solution of this application, it also includes a base; a bracket is vertically arranged on the base, and a pressure strip assembly, a guide part and a rotating assembly are vertically arranged on the bracket, and the base and the clock are fixed with screws.

[0015] As a preferred technical solution of the present application, the guide portion includes a guide shaft, a guide sleeve and a locking screw;

[0016] The guide shaft is vertically arranged on the bracket;

[0017] The guide sleeve is provided with a mounting hole A and a mounting hole B. The rotating assembly is connected to the guide sleeve via the mounting hole A, and the guide sleeve is sleeved on the guide shaft via the mounting hole B and can be locked by a locking screw.

[0018] When unlocked, the guide sleeve slides axially along the guide shaft and can rotate around the shaft, making it easy to align with the spline shaft.

[0019] As the preferred technical solution of this application, the pressure strip assembly includes a pressure strip support block and a pressure strip rod. The pressure strip support block is vertically arranged on the bracket and has a hole at the top. The pressure strip rod has threads and is inserted into the hole. The pressure strip rod is rotated to move it toward the pressure strip block and press it down until the pressure strip block can no longer be pressed down.

[0020] Working principle and process:

[0021] The strip-releasing clamp designed in this scheme is provided with a pressure strip assembly to maintain the downward pressure state of the strip-releasing block. By twisting the pressure strip rod of the pressure strip assembly, the pressure strip rod is moved to press the strip-releasing block downward; at the same time, a rotating assembly is provided to control the rotation of the spline shaft, thereby controlling the rotation of the gear system - that is, the process of clock strip-releasing. The rotating assembly is provided with a spline sleeve, and a locking part is provided in the rotating assembly to make the rotation resistance of the spline sleeve greater than the driving force of the clock strip-releasing. The spline sleeve is connected to the rotary rod. When a person manually rotates the rotary rod, the spline sleeve can rotate, thereby rotating the spline shaft and driving the gear system to rotate - that is, the clock strip-releasing process is manually controlled.

[0022] During the process of using the fixture of this solution to assist in releasing the clock strip, the rotating assembly has been adjusted and will not be adjusted in the subsequent process. Then the fixture base is fixed to the clock, the pressure bar rod is rotated to press down the pressure bar assembly, and at the same time, the spline sleeve is aligned with the spline shaft through the guide sleeve and inserted, and the position of the guide sleeve is fixed by the locking screw. At this time, due to the resistance of the spline sleeve, the gear system does not rotate. Manually rotate the lever, and the spline sleeve drives the spline shaft to rotate, so that the gear system rotates and the clock starts to release the strip.

[0023] The utility model has the following advantages:

[0024] (1) The clock's release process can be manually controlled, and it is not easy to damage the precision gears;

[0025] When repairing a helicopter's clock, the first step is to release the clock. The pressure block inside the clock must always be pressed down. This is usually done manually to ensure the release process is carried out normally. However, if the pressure block is accidentally released, the release process stops suddenly. The high-speed rotation of the clock gear in the release generates an impact force that can cause significant damage to the high-precision gears inside the clock.

[0026] The present invention provides a strip-releasing fixture that controls the entire strip-releasing process of a clock by providing a strip-releasing assembly and a rotating assembly. A strip-releasing lever is provided, and by rotating the strip-releasing lever, the strip-releasing block is pressed down and fixed, thereby preventing the strip-releasing process from being stopped due to sudden release of the strip-releasing block. At the same time, a spline sleeve, a spline shaft, and a locking portion are provided in the rotating assembly so that the resistance applied by the rotating assembly to the spline sleeve is greater than the driving force generated by the strip-releasing of the clock. The gear cannot rotate on its own due to the rotational resistance, and can only rotate the spline sleeve manually to rotate the spline shaft, thereby rotating the gear. This allows the strip-releasing process to be carried out at a slower speed under manual control, without damaging the precision gears.

[0027] (2) Simple structure, easy to install and disassemble;

[0028] The strip clamp structure designed in this scheme is relatively simple. The base is designed to be installed through the existing threaded holes on the clock, which is convenient for installation and disassembly. At the same time, a guide shaft and a guide sleeve are designed to connect the rotating component and the guide shaft through the guide sleeve. The guide sleeve can slide along the axis on the guide shaft and can rotate around the axis to adjust the positioning and installation of the spline sleeve and the spline shaft on the rotating component. When the guide sleeve is moved to the appropriate position, the guide sleeve and the guide shaft are locked by the locking screw. The overall structure is relatively simple. The clamp designed in this scheme is very convenient in operation, installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the utility model after being installed with a strip clock;

[0030] Figure 2 This is a schematic structural diagram of the utility model from the first perspective;

[0031] Figure 3 This is a structural diagram of the pressing block of the pressing strip assembly of the utility model;

[0032] Figure 4 This is a schematic structural diagram of the rotating assembly of the utility model;

[0033] Figure 5 This is a schematic structural diagram of a half-section view of the rotating assembly of the present invention;

[0034] Figure 6 This is a schematic structural diagram of the guide sleeve of the utility model;

[0035] In the figure: 1-base, 2-bracket, 3-guide shaft, 4-guide shaft sleeve, 5-pressure strip support block, 6-pressure strip rod, 7-rotary rod, 8-pull rod, 9-spline sleeve, 10-locking screw, 11-nut A, 12-nut B, 13-adjusting spacer, 14-O-ring, 15-mounting hole A, 16-mounting hole B, 17-pressure strip block, 18-spline shaft. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0037] It should be noted that the directions or positional relationships indicated by “left”, “right”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the invented product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0039] It should be noted that the clock of a certain type of helicopter is provided with three threaded shaft holes, and a gear system is also provided on the clock for rotation. A spline shaft is protruding outward from the gear system, and rotates together with it. A release bar pressure block is provided on the gear system of the clock. When rotating the release bar, the release bar pressure block on the gear must be kept pressed down. When the release bar pressure block is released during the release process, the release bar pressure block can block the rotation of the gear system, and the gear will suddenly stop. Since the impact force of the sudden end of the release bar is relatively large, the more delicate gears on the clock are damaged.

[0040] Therefore, based on the above questions, see Figure 1 The utility model proposes a bar clamp for a certain type of helicopter clock to solve the problem.

[0041] (Example 1)

[0042] See Figures 1 to 6 , This embodiment proposes a strip clamp for a certain type of helicopter clock, including a base 1, a strip assembly, a rotating assembly, and a guide portion;

[0043] Among them, see Figure 1 and Figure 2 A bracket 2 is vertically provided on the base 1, and a guide portion is vertically provided on the bracket 2. The guide portion includes a guide shaft 3, a guide shaft sleeve 44 is sleeved on the guide shaft 3, and the rotating assembly is connected to the guide shaft sleeve 44. Since the guide shaft sleeve 44 can slide on the guide shaft 3 and can rotate around the guide shaft 3, the rotating assembly can slide on the guide shaft 3 and can rotate around the guide shaft 3;

[0044] Among them, see Figure 3The beading assembly includes a beading support block 5 and a beading rod 6; the beading support block 5 is arranged on the bracket 2 and is arranged vertically along the plane of the bracket 2; the beading rod 6 is a threaded rod, which is installed on the beading support block 5 and is perpendicular to the beading support block 5. By rotating the beading rod 6, the beading rod 6 can be moved downward to press the beading block 17 downward;

[0045] Among them, see Figure 4 and Figure 5 The rotating assembly includes a rotating rod 7, a spline sleeve 9, and a locking portion. The rotating rod 7 is inserted into the guide sleeve 44. A locking portion is provided on the rotating rod 7. A spline sleeve 9 is provided at the lower end of the rotating rod 7. The resistance of the spline sleeve 9 is adjusted by the locking portion so that the spline sleeve 9 can lock the spline shaft 18. The spline sleeve 9 and the spline shaft 18 matched therewith are rotated by the rotating rod 7.

[0046] Among them, see Figure 1 and Figure 2 , a locking screw 10 is transversely arranged on the guide shaft 3, and the rotating assembly is fixed by the locking screw 10;

[0047] During operation, first fix the strip-releasing clamp to the clock through the three threaded holes on the clock, rotate the strip-releasing assembly to press the strip-releasing block 17 to the inside of the clock and fix it; at the same time, slide the rotating assembly along its guide shaft 3 toward the clock, and rotate the rotating assembly so that the spline sleeve 9 is aligned with the spline shaft 18, and insert it, and finally fix it with the locking screw 10; the gear cannot rotate on its own due to rotational resistance, preventing automatic strip-releasing. The only way is to manually rotate the rotating rod 7 to make the spline sleeve 9 drive the spline shaft 18 to rotate, thereby rotating the gear, and the clock can achieve slow and paused manual strip-releasing;

[0048] At present, for the process of releasing the strip of the clock in the helicopter, the gear usually rotates automatically after manually pressing the strip releasing block 17. However, when the strip releasing block 17 is accidentally released, the strip releasing stops immediately, which generates a considerable impact force and damages the precision gears on the clock. This solution designs a strip releasing assembly, which uses a threaded rod to keep the strip releasing block 17 in a downward state. At the same time, this solution sets a rotation to gradually lock the spline shaft 18 - so that the self-rotation of the gear is converted into manual control rotation. First, the spline sleeve 9 is adapted to the spline shaft 18 and inserted. The spline sleeve 9 generates rotational resistance to the spline shaft 18 through the locking part. The rotation of the gear can only be controlled by still rotating the rotary rod 7, thereby controlling the speed of the strip releasing process. Through the above structure, the uncontrollable automatic strip releasing process is captured and converted into a manual, speed-controllable and pausable manual strip releasing, thereby avoiding damage to the precision gears due to the sudden stop of the strip releasing.

[0049] In this embodiment, refer to Figure 1 and Figure 2As for the design of the base 1, the base 1 is a rectangular plate. A threaded hole corresponding to the threaded shaft hole of the clock is provided on the base 1, and the base 1 and the clock can be fixedly connected through the threaded hole. A bracket 2 is vertically arranged on the base 1. The bracket 2 is an L-shaped thin plate. A pressure strip assembly and a guide portion are vertically provided on the bracket 2. When the base 1 is fixed to the threaded shaft hole of the clock, the pressure strip assembly is adjusted to face the pressure block 17.

[0050] In this embodiment, refer to Figure 3 As for the design of the pressure strip assembly, the pressure strip assembly includes a pressure strip support block 5 and a pressure strip rod 6. The pressure strip support block 5 is a small long plate. The pressure strip support block 5 is arranged on the bracket 2 and is perpendicular to the bracket 2. The end of the pressure strip support block 5 is facing the clock direction and a threaded through hole is opened. The pressure strip rod 6 is inserted into the threaded through hole. The pressure strip rod 6 itself is a threaded rod. The end of the pressure strip rod 6 is provided with a handle. When the handle is turned, the pressure strip rod 6 moves toward the clock direction, and the end of the pressure strip rod 6 is against the clock's strip pressing block 17. Continuing to turn the handle causes the pressure strip rod 6 to continue to press down the strip pressing block 17 until the handle cannot be turned.

[0051] In this embodiment, refer to Figure 2 As for the design of the guide part, the guide part includes a guide shaft 3, a guide sleeve 44 and a locking screw 10; the guide shaft 3 is a long axis, which is arranged on the bracket 2 and is perpendicular to the bracket 2, and the guide sleeve 44 is a rectangular column. Two adjacent mounting holes A15 and mounting holes B16 are opened on the guide sleeve 44, and the guide sleeve 44 is sleeved on the guide shaft 3 through the mounting hole B16. A threaded hole is opened horizontally from the side of the mounting hole B16 to the end face of the guide sleeve 44, and the locking screw 10 is inserted into the guide sleeve 44 through the threaded hole. When the locking screw 10 is not locked, the guide sleeve 44 can slide up and down along the axis on the guide shaft 3, and the guide sleeve 44 can rotate around the axis, thereby facilitating the subsequent alignment of the spline shaft 18.

[0052] In this embodiment, refer to Figure 4 and Figure 5, for the design of the rotating assembly, the rotating assembly includes a rotating rod 7, a spline sleeve 9, and a locking part; the rotating rod 7 is set through the mounting hole A15 of the guide sleeve 44, and the lower end of the mounting hole A15 is provided with a spline sleeve 9. The end of the spline sleeve 9 is provided with convex teeth and vertical grooves, which are adapted to the vertical grooves and convex teeth on the spline shaft 18 of the gear system on the clock. The spline sleeve 9 extending out of the mounting hole A15 is provided with a stepped surface, and a circle of resistance pads is provided between the stepped surface and the end face of the mounting hole A15 to enhance resistance Function; A lever 8 is provided at the other end of the rotary rod 7, and the lever 8 is arranged perpendicular to the rotary rod 7; the locking portion includes a nut A11, a nut B12, and an O-ring 14. The nut A11 is in the shape of a round cover, and the nut A11 is sleeved on the outside of the rotary rod 7; a plurality of O-rings 14 are also sleeved on the outside of the rotary rod 7 from top to bottom and are located below the nut A11. An adjustment pad 13 is sleeved outside the O-ring 14, and the adjustment pad 13 is provided with a nut B12 on the outer sleeve. The nut B12 is connected to the nut A11;

[0053] When the rotating rod 7 is inserted into the mounting hole A15, the bottom of the nut A11 rests on the upper surface of the guide sleeve 44, and the nut B12, the adjusting pad 13 and the multiple O-rings 14 are all inserted into the mounting hole A15 along with the rotating rod 7; the rotating assembly first rotates the nut A11 to rotate the nut B12 located inside, and adjusts the shaft interference between the O-ring 14 and the spline sleeve 9, and the hole interference between the O-ring 14 and the guide sleeve 44, to adjust the rotational resistance of the spline sleeve 9 at the lower end of the rotating rod 7 so that it is greater than the driving force for releasing the strip, so that when the strip release block 17 is pressed down, the gear system should start to release the strip, but the spline shaft 18 on the gear system is connected to its corresponding spline sleeve 9, so that the gear system cannot rotate and release the strip due to the rotational resistance of the rotating assembly. The resistance applied to the spline sleeve 9 by the rotating assembly is greater than the driving force generated by the clock release, and the gear system cannot rotate - that is, the clock release cannot be carried out.

[0054] Furthermore, when the clamp of this solution is used for manual strip release control, the rotating assembly has been adjusted and the nut B12 has been fixed, and the rotating assembly is no longer adjusted in the subsequent process; and when the rotating assembly is adjusted to make the interference fit appropriate, the rotational resistance applied to the spline sleeve 9 will not be too large. This rotational resistance can only prevent the rotation of the spline shaft 18, but when the rotary rod 7 is manually turned, the spline sleeve 9 can be easily rotated.

[0055] When the guide sleeve slides up and down along the shaft through the guide shaft 3, the spline sleeve 9 of the rotating assembly can be adapted and installed with the spline shaft 18 of the clock. Since the rotating assembly has been adjusted in advance, the rotational resistance of the spline sleeve 9 can prevent the rotation of the spline shaft 18 during the strip release process. Then, by manually turning the lever 8, the spline sleeve 9 can rotate at the speed at which the lever 8 is manually turned, driving the spline shaft 18 adapted and installed to rotate, thereby driving the gear system to rotate, so that the entire strip release process can be controlled.

[0056] The present invention is designed as a strip-releasing fixture for a certain type of helicopter clock. By designing a strip-releasing assembly and a rotating assembly, the strip-releasing process of the clock is made more controllable and less likely to damage the clock gears. The strip-releasing rod 6 on the strip-releasing assembly is arranged to face the strip-releasing pressure block 17. Since the strip-releasing rod 6 can move on the strip-releasing support block 5, the strip-releasing rod 6 presses the strip-releasing pressure block 17 downward until the strip-releasing pressure block 17 cannot be pressed down. At present, the strip-releasing process of the clock is manually pressed down and kept in the pressed down state to facilitate the strip-releasing process. However, manual operation is cumbersome and it is easy to accidentally release the strip-releasing pressure block 17, causing the strip-releasing process to stop suddenly, thereby damaging the gears on the clock due to the impact force. Compared with the current manual strip-releasing, the strip-releasing assembly designed in this scheme can keep the strip-releasing pressure block 17 pressed down during the strip-releasing process, reducing work errors and damage to components, and has a simple structure and is easy to operate.

[0057] At present, during the process of releasing the strip of the clock, after the strip pressing block 17 is pressed down, the gear system on the clock rotates to release the strip. However, the driving force of the whole process is the driving force of the gear system, and its speed is not controllable. It is not convenient to pause the strip releasing process. The only way to stop the strip releasing is to release the strip by releasing the pressed strip pressing block 17. This method is easy to damage the gear. Therefore, the present invention also provides a rotating assembly, which first moves the rotating assembly up and down and rotates on the guide shaft 3 through the guide part, so that the spline sleeve 9 in the rotating assembly moves with the gear on the clock. The rotating spline shaft 18 is relatively aligned and matched. When the clock's strip-releasing process begins, the strip-releasing assembly has completed pressing the strip-releasing pressure block 17, and the gear system begins to rotate, driving the spline shaft 18 thereon to rotate. The rotating assembly itself uses interference fit to enable the spline sleeve 9 below to limit the spline shaft 18 that cooperates with it, restricting the rotation of the spline shaft 18, thereby stopping the rotation of the gear system, and then rotating the spline sleeve 9 by rotating the lever 8 - even if the gear rotates, the strip-releasing process is carried out under manual operation to control the rate of the strip-releasing process.

[0058] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A strip-releasing fixture for a certain type of helicopter clock, comprising a clock, wherein a gear system is provided on the clock. When the strip is released, a strip-releasing pressing block (17) is provided on the gear system. The strip-releasing pressing block (17) is kept pressed downward, and the gear system rotates, and a spline shaft (18) provided on the gear system also rotates accordingly; the characteristics are as follows: It also includes a layering assembly, a rotating assembly, and a guide portion; The pressure strip assembly is arranged above the pressure strip press block (17), and the pressure strip assembly presses the pressure strip press block (17) downward; The rotating assembly is connected to the guide part, and the guide part drives the rotating assembly to cooperate with the spline shaft (18), so that the spline shaft (18) cannot rotate on its own, and the rotating assembly can only be manually rotated to rotate the spline shaft (18), thereby rotating the gear system; When the strip clamp is working, the strip clamp is first fixed to the clock, and then the strip pressing assembly is rotated to press the strip pressing block (17) downward and keep the pressing state, and at the same time the rotating assembly is slid toward the clock direction through the guide part so that it can be installed with the spline shaft (18), and the rotating assembly is manually rotated, and the spline shaft (18) rotates accordingly, so that the gear system rotates, and the strip is manually released.

2. A bar clamp for a certain type of helicopter clock according to claim 1, characterized in that: The rotating assembly comprises a rotating rod (7) and a spline sleeve (9); One end of the rotating rod (7) is connected to a lever (8) vertically arranged therewith, and the other end is connected to a spline sleeve (9). The rotating rod (7) is inserted into the guide portion from top to bottom and the protruding end is the spline sleeve (9). The spline sleeve (9) is adapted to be installed on the spline shaft (18) of the clock. By rotating the pull rod (8), the spline sleeve (9) at the tail end of the rotary rod (7) rotates, and the spline shaft (18) connected thereto rotates, driving the gear system to rotate, thereby controlling the speed of the strip-releasing process.

3. The strip placement fixture for a certain type of helicopter clock according to claim 2, characterized in that: The invention also includes a locking part; the locking part includes a nut A (11), a nut B (12) and a sealing ring; the sealing ring is sleeved outside the rotating rod (7), and an adjusting pad (13) is also provided outside the sealing ring; the nut A (11) is also sleeved outside the rotating rod (7) and located above the sealing ring; the nut A (11) is connected to the nut B (12), and the nut B (12) is sleeved outside the adjusting pad (13); When the rotating rod (7) is inserted into the guide part, the nut A (11) is against the outside of the guide part, and the nut B (12), the sealing ring and the adjusting pad (13) are inserted into the guide part along with the rotating rod (7). When the nut A (11) is rotated, the nut B (12) connected thereto is rotated, so that the spline sleeve (9) has a resistance greater than the driving force of the spline shaft (18), and the gear system cannot rotate on its own.

4. The strip placement fixture for a certain type of helicopter clock according to claim 1, characterized in that: The clock also includes a base (1); a bracket (2) is vertically arranged on the base (1); a pressure strip assembly, a guide portion and a rotating assembly are vertically arranged on the bracket (2); and the base (1) and the clock are fixed by screws.

5. The strip placement fixture for a certain type of helicopter clock according to claim 4, characterized in that: The guide portion comprises a guide shaft (3), a guide shaft (3) sleeve and a locking screw (10); The guide shaft (3) is vertically arranged on the bracket (2); The guide shaft (3) sleeve is provided with a mounting hole A (15) and a mounting hole B (16); the rotating assembly is connected to the guide shaft (3) sleeve via the mounting hole A (15); and the guide shaft (3) sleeve is sleeved on the guide shaft (3) via the mounting hole B (16) and can be locked by a locking screw (10); When unlocked, the guide shaft (3) sleeve slides axially along the guide shaft (3) and can rotate around the axis, so as to facilitate alignment with the spline shaft (18).

6. The strip placement fixture for a certain type of helicopter clock according to claim 1, characterized in that: The beading assembly comprises a beading support block (4) and a beading rod (6). The beading support block (4) is vertically arranged on the bracket (2) and has a hole at the top. The beading rod (6) has a thread and is inserted into the hole. The beading rod (6) is rotated to move toward the beading block (17) and press downward until the beading block (17) can no longer be pressed downward.

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