Reversible small mast and operation method thereof

Abstract

The invention discloses a collapsible small mast, belongs to the technical field of ship masts, and solves the problem that the height of an existing mast is inconvenient to adjust. The mast comprises a mast body and a mast base, the mast base is fixed to a ship ceiling deck, a rotating shaft is rotationally installed in the mast base, one end of the mast body is connected with the rotating shaft, and a supporting assembly used for supporting the mast body in an inclined state is arranged between one side of the mast body and the mast base. And a locking device for locking the mast body in an upright state is arranged between the other side of the mast body and the mast base. According to the small mast, the mast can be put down, the height of the mast is reduced, and the small mast can conveniently pass through a narrow bridge. The invention further discloses an operation method of the small collapsible mast. The method can quickly reduce the height of the mast.

Description

Technical Field

[0001] The present invention relates to the technical field of ship masts, and more particularly to a retractable small mast and an operating method thereof. Background Art

[0002] A mast is a tall pole on a ship that is used to hang sails and flags, install antennas, and support observation platforms. It is a long wooden pole or a metal pole, usually erected vertically from the keel or centerboard of the ship, and can support the lower girders of the cross sails, booms, or diagonal girders. In recent years, the flow of goods and official patrols in inland tributaries have become increasingly frequent, and small and medium-sized ships will face various bridge height restrictions when shuttling through narrow rivers. Due to historical reasons, some bridges do not fully consider the passability of current ships, and the height of the bridge cannot be changed. Therefore, this problem can only be solved from the design of the ship. The height of existing ship masts is mostly non-adjustable. Although some retractable masts can adjust the height, it will affect the layout of other parts on the mast, such as signal lights.

[0003] Therefore, there is an urgent need to develop and design a retractable small mast and an operating method thereof. Summary of the invention

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. One purpose of the present invention is to provide a reversible small mast that can be reversible to lower its height for easy passage through narrow bridges.

[0005] The second purpose of the present invention is to provide a method for operating a retractable small mast to achieve rapid reduction of the mast height.

[0006] In order to achieve the above-mentioned purpose one, the present invention provides a retractable small mast, including a mast body and a mast base, wherein the mast base is fixed on the top deck of the ship, a rotating shaft is rotatably installed in the mast base, one end of the mast body is connected to the rotating shaft, a supporting assembly for supporting the mast body in an inclined state is provided between one side of the mast body and the mast base, and a locking device for locking the mast body in an upright state is provided between the other side of the mast body and the mast base.

[0007] As a further improvement, a lightning rod is provided at the top of the mast body, a radar is provided at the middle of the mast body, and a plurality of mast signal lights distributed along the axial direction are also provided on the mast body.

[0008] Furthermore, the support assembly includes an upper support seat and a lower support seat, the upper support seat is fixed on one side of the mast body, and the lower support seat is fixed on one side of the mast base, and when the mast body is laid down, the upper support seat is in contact with the lower support seat.

[0009] Furthermore, the locking device includes a knife and a sleeve, the knife is mounted on the top of the mast base on the other side of the mast body, and one end of the knife is hingedly connected to the mast base, and the sleeve is fixed on the other side of the mast body. When the mast body is erected, the other end of the knife is inserted into the sleeve, and a pin is movably inserted between the knife and the sleeve.

[0010] Furthermore, a worm gear mechanism is detachably provided on one side of the mast base, an output end of the worm gear mechanism is connected to a rotating shaft, and a power assembly is detachably installed on an input end of the worm gear mechanism.

[0011] Furthermore, the power assembly is an operating crank, and a waterproof cover that can cover the input end of the worm gear mechanism is hingedly mounted on the mast base above the operating crank.

[0012] Furthermore, the power assembly includes a controller, a drive motor, a first infrared sensor, a second infrared sensor and a third infrared sensor. The drive motor is detachably mounted on the mast base, and the output end of the drive motor is detachably connected to the input end of the worm gear mechanism. The first infrared sensor is mounted on the support assembly, the second infrared sensor is mounted on the mast base on the side of the lock, and the third infrared sensor is mounted on the mast base on the side of the latch. A laydown button and a standup button are respectively provided on the controller, and the drive motor, the first infrared sensor, the second infrared sensor, the third infrared sensor, the laydown button and the standup button are all electrically connected to the controller.

[0013] In order to achieve the above-mentioned second objective, the present invention provides a method for operating a collapsible small mast, including the collapsible small mast described above, and the method comprises the following steps:

[0014] S1. Mast down:

[0015] S1.1: Pull out the pin between the switch and the ferrule;

[0016] S1.2: Lift the switch;

[0017] S1.3: Install the operating crank at the input end of the worm gear mechanism, and rotate the operating crank to drive the mast body to slowly fall down through the worm gear mechanism until the upper support seat contacts and fits with the lower support seat, thus completing the mast falling operation;

[0018] S2. Mast erection:

[0019] S2.1: Install the operating crank at the input end of the worm gear mechanism, and rotate the operating crank to drive the mast body to slowly stand up through the worm gear mechanism until the sleeve rotates to the position of the knife;

[0020] S2.2: Pull the switch and put it into the ferrule;

[0021] S2.3: Insert the pin between the switch and the sleeve to complete the mast erection operation.

[0022] Another method for operating a collapsible small mast is also provided, comprising the collapsible small mast described above, the method comprising the following steps:

[0023] S1. Mast down:

[0024] S1.1: Pull out the pin between the switch and the ferrule;

[0025] S1.2: Lift the switch;

[0026] S1.3: Install the operating crank at the input end of the worm gear mechanism, and rotate the operating crank to drive the mast body to slowly fall down through the worm gear mechanism until the upper support seat contacts and fits with the lower support seat, thus completing the mast falling operation;

[0027] S2. Mast erection:

[0028] S2.1: Install the operating crank at the input end of the worm gear mechanism, and rotate the operating crank to drive the mast body to slowly stand up through the worm gear mechanism until the sleeve rotates to the position of the knife;

[0029] S2.2: Pull the switch and put it into the ferrule;

[0030] S2.3: Insert the pin between the switch and the sleeve to complete the mast erection operation.

[0031] Another method for operating a collapsible small mast is also provided, comprising the collapsible small mast described above, the method comprising the following steps:

[0032] S1. Mast down:

[0033] S1.1: Pull out the pin between the switch and the ferrule;

[0034] S1.2: Lift the knife, and after the knife leaves the third infrared sensor, the controller unlocks the lay-down button;

[0035] S1.3: Press the down button, the controller controls the drive motor to start forward rotation, and drives the mast body to slowly down through the worm gear mechanism until the upper support seat contacts and fits with the lower support seat. At this time, the first infrared sensor detects that the mast body is down in place, the controller locks the down button, unlocks the stand button, and controls the drive motor to shut down, completing the mast down operation;

[0036] S2. Mast erection:

[0037] S2.1: Press the erection button, the controller controls the drive motor to start reverse rotation, and drives the mast body to slowly erect through the worm gear mechanism until the sleeve rotates to the position of the knife. At this time, the second infrared sensor detects that the mast body is erected in place, the controller locks the erection button, unlocks the lay-down button, and controls the drive motor to shut down;

[0038] S2.2: Pull the knife and put it into the card sleeve. At this time, the third infrared sensor detects that the knife is in place, and the controller locks the down button;

[0039] S2.3: Insert the pin between the switch and the sleeve to complete the mast erection operation.

[0040] Beneficial Effects

[0041] Compared with the prior art, the present invention has the following advantages:

[0042] The collapsible small mast of the present invention has a mast body of a rotatably mounted structure, and the mast can be laid down to lower its height so as to facilitate passing through narrow bridges. At the same time, the mast body is supported by a supporting assembly so that it is in an inclined state after being laid down, thereby improving its stability after being laid down and facilitating the subsequent lifting of the mast body. After the mast body is erected, it is locked by a locking device to ensure that it can be used normally. The collapsible mast can achieve rapid reduction of the mast height. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of the present invention;

[0044] Figure 2 It is a side view structural schematic diagram of embodiment 1 of the present invention;

[0045] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0046] Figure 4 This is a schematic diagram of the main structure of the mast after it is laid down in Embodiment 1 of the present invention;

[0047] Figure 5 This is a schematic diagram of the main structure of Embodiment 2 of the present invention;

[0048] Figure 6 It is a side view structural schematic diagram of embodiment 2 of the present invention;

[0049] Figure 7 for Figure 6 A schematic diagram of the structure enlarged at B in the middle;

[0050] Figure 8 This is a schematic diagram of the main structure of the mast after it is laid down in Embodiment 2 of the present invention;

[0051] Fig. 9 for Figure 8 A schematic diagram of the structure enlarged at C in the middle;

[0052] Fig.10 This is a schematic diagram of the main structure of Embodiment 3 of the present invention;

[0053] Fig.11 It is a side view structural schematic diagram of embodiment 3 of the present invention;

[0054] Fig.12 for Fig.11 A schematic diagram of the structure at D in the middle is enlarged;

[0055] Fig.13 This is a schematic diagram of the main structure of the mast after it is laid down in Example 3 of the present invention.

[0056] Among them: 1-mast body, 2-mast base, 3-ship roof deck, 4-rotating shaft, 5-lightning rod, 6-radar, 7-mast signal light, 8-upper support seat, 9-lower support seat, 10-switch, 11-ferrule, 12-latch, 13-worm gear mechanism, 14-operating crank, 15-waterproof cover, 16-drive motor, 17-first infrared sensor, 18-second infrared sensor, 19-third infrared sensor. DETAILED DESCRIPTION

[0057] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0058] Example 1

[0059] See also Figure 1-4 , which is a specific embodiment of the present invention, a reversible small mast of the present invention comprises a mast body 1 and a mast base 2, a lightning rod 5 is arranged on the top of the mast body 1, a radar 6 is arranged in the middle of the mast body 1, and a plurality of mast signal lights 7 distributed along its axial direction are also arranged on the mast body 1, forming a ship mast. The mast base 2 is fixed on the ship's roof deck 3, and a rotating shaft 4 is rotatably installed in the mast base 2. Both ends of the rotating shaft 4 can be connected to the mast base 2 through bearings, and one end of the mast body 1 is connected to the rotating shaft 4, so that the mast body 1 can swing relative to the mast base 2, so that the mast body 1 can be laid down or erected. A support assembly for supporting the mast body 1 in an inclined state is arranged between one side of the mast body 1 and the mast base 2, and the support assembly can make the mast body 1 fall down, and the angle between the mast body 1 and the horizontal plane is about 13°, which is in an inclined state, so that it is convenient to lift the mast body 1 later, and it also prevents other parts on the mast body 1 from hitting the ship's roof deck 3, effectively protecting the mast. A locking device for locking the mast body 1 in an erected state is provided between the other side of the mast body 1 and the mast base 2 .

[0060] The collapsible small mast of the present invention has a mast body 1 which is a rotatably mounted structure, and the mast can be laid down to lower its height so as to facilitate passing through narrow bridges. At the same time, the mast body 1 is supported by a supporting assembly so that it is in an inclined state after being laid down, thereby improving its stability after being laid down and facilitating the subsequent lifting of the mast body. After the mast body 1 is erected, it is locked by a locking device to ensure that it can be used normally. The collapsible mast can quickly lower the height of the mast.

[0061] Preferably, the support assembly includes an upper support seat 8 and a lower support seat 9, wherein the upper support seat 8 is fixed to one side of the mast body 1, and the lower support seat 9 is fixed to one side of the mast base 2. When the mast body 1 is laid down, the upper support seat 8 is in contact with the lower support seat 9, and the angle between the top surface of the lower support seat 9 and the horizontal plane is about 13°, so that the mast body 1 is in an inclined state after being laid down. The upper support seat 8 and the lower support seat 9 cooperate to support the mast, which can improve the stability of the mast after being laid down, and at the same time can limit the tilting state of the mast. Furthermore, a buffer rubber pad can be provided on the bottom surface of the upper support seat 8 or the top surface of the lower support seat 9, which can play a buffering role when the mast is laid down.

[0062] Preferably, the locking device includes a knife 10 and a sleeve 11, wherein the knife 10 is mounted on the top of the mast base 2 on the other side of the mast body 1, and one end of the knife 10 is hingedly connected to the mast base 2, and the sleeve 11 is fixed on the other side of the mast body 1, and the sleeve 11 is a baffle with an opening at the top. When the mast body 1 is erected, the other end of the knife 10 is inserted into the sleeve 11. In order to improve the locking stability, a U-shaped seat is further provided on the side of the mast base 2 away from the hinge between the knife 10 and the mast base 2. When the knife 10 is inserted into the sleeve 11, it is also inserted into the U-shaped seat to achieve double locking and limiting. A pin 12 is also movably inserted between the knife 10 and the sleeve 11 to prevent the knife 10 from automatically lifting. Furthermore, a handle is further provided on the top of the knife 10 to facilitate its lifting.

[0063] A method for operating a retractable small mast, the method comprising the following steps:

[0064] S1. Mast down:

[0065] S1.1: Remove the pin 12 between the switch 10 and the ferrule 11;

[0066] S1.2: Hold the mast body 1 with your hands and lift the gate knife 10 at the same time;

[0067] S1.3: Slowly lower the mast body 1 until the upper support seat 8 and the lower support seat 9 are in contact and fit, completing the mast lowering operation;

[0068] S2. Mast erection:

[0069] S2.1: Slowly lift up the mast body 1 by hand until the sleeve 11 rotates to the position of the knife 10;

[0070] S2.2: Pull the knife 10 and put it into the ferrule 11;

[0071] S2.3: Insert the pin 12 between the switch 10 and the sleeve 11 to complete the mast erection operation.

[0072] Example 2

[0073] See also Figure 5-9 , is another specific embodiment of the present invention. This embodiment is basically the same as the embodiment 1, and the difference is that: a worm gear mechanism 13 is detachably provided on one side of the mast base 2. The detachable worm gear mechanism 13 is convenient for disassembly and maintenance. The worm gear mechanism 13 is a worm gear transmission structure in the prior art, which will not be described in detail here. The output end of the worm gear mechanism 13 is connected to the rotating shaft 4, and the input end of the worm gear mechanism 13 is detachably installed with a power component. The detachable installation method of the power component is convenient for replacing different power components for use, and it is more convenient to use. In this embodiment, the worm gear mechanism 13 is used to drive the rotating shaft 4, which is convenient to use the power source to drive the rotating shaft 4 to rotate, and then drive the mast body 1 to be laid down or stood up, which is more convenient and labor-saving to operate. At the same time, the worm gear mechanism 13 has a self-locking function to avoid the mast body 1 from automatically swinging and causing safety problems.

[0074] Preferably, the power component is an operating crank 14, the input end of the worm gear mechanism 13 is a polygonal shaft or a polygonal groove, one end of the operating crank 14 is provided with a polygonal slot or a polygonal plug shaft that matches the polygonal shaft or the polygonal groove, and a waterproof cover 15 that can cover the input end of the worm gear mechanism 13 is hingedly installed on the mast base 2 above the operating crank 14 to prevent rainwater from entering the worm gear mechanism 13.

[0075] A method for operating a retractable small mast, the method comprising the following steps:

[0076] S1. Mast down:

[0077] S1.1: Remove the pin 12 between the switch 10 and the ferrule 11;

[0078] S1.2: Lift the switch 10;

[0079] S1.3: Install the operating crank 14 at the input end of the worm gear mechanism 13, and rotate the operating crank 14 to drive the mast body 1 to slowly fall down through the worm gear mechanism 13 until the upper support seat 8 and the lower support seat 9 are in contact and fit, thus completing the mast falling operation;

[0080] S2. Mast erection:

[0081] S2.1: Install the operating crank 14 at the input end of the worm gear mechanism 13, and rotate the operating crank 14 to drive the mast body 1 to slowly stand up through the worm gear mechanism 13 until the sleeve 11 rotates to the position of the knife 10;

[0082] S2.2: Pull the knife 10 and put it into the ferrule 11;

[0083] S2.3: Insert the pin 12 between the switch 10 and the sleeve 11 to complete the mast erection operation.

[0084] Example 3

[0085] See also Figure 10-13 , is another specific embodiment of the present invention, which is basically the same as Example 2, except that: the power assembly includes a controller, a drive motor 16, a first infrared sensor 17, a second infrared sensor 18 and a third infrared sensor 19, wherein the drive motor 16 is detachably mounted on the mast base 2, and the output end of the drive motor 16 is detachably connected to the input end of the worm gear mechanism 13, and the first infrared sensor 17 is mounted on the support assembly, specifically, the first infrared sensor 17 is mounted on the lower support seat 9, and the probe end of the first infrared sensor 17 The surface is flush with the top surface of the lower support seat 9, and is used to detect whether the mast body 1 is laid down in place. The second infrared sensor 18 is installed on the mast base 2 on the side of the lock device, and is used to detect whether the mast body 1 is erected in place. The third infrared sensor 19 is installed on the mast base 2 on the side of the latch 12, and is used to detect whether the bottom of the knife 10 is in place. A laying down button and an erecting button are respectively provided on the controller. The driving motor 16, the first infrared sensor 17, the second infrared sensor 18, the third infrared sensor 19, the laying down button and the erecting button are all electrically connected to the controller to realize automatic control.

[0086] A method for operating a retractable small mast, the method comprising the following steps:

[0087] S1. Mast down:

[0088] S1.1: Remove the pin 12 between the switch 10 and the ferrule 11;

[0089] S1.2: lift the knife 10. After the knife 10 leaves the third infrared sensor 19, the controller unlocks the lay-down button;

[0090] S1.3: Press the down button, the controller controls the drive motor 16 to start forward rotation, and drives the mast body 1 to slowly down through the worm gear mechanism 13 until the upper support seat 8 and the lower support seat 9 are in contact and fit. At this time, the first infrared sensor 17 detects that the mast body 1 is down in place, the controller locks the down button, unlocks the stand-up button, and controls the drive motor 16 to turn off, completing the mast down operation;

[0091] S2. Mast erection:

[0092] S2.1: Press the erection button, the controller controls the drive motor 16 to start reverse rotation, and drives the mast body 1 to slowly erect through the worm gear mechanism 13, until the sleeve 11 rotates to the position of the knife 10, at which time the second infrared sensor 18 detects that the mast body 1 is erected in place, the controller locks the erection button, unlocks the lay-down button, and controls the drive motor 16 to turn off;

[0093] S2.2: Pull the knife 10 and put it into the card sleeve 11. At this time, the third infrared sensor 19 detects that the knife 10 is in place, and the controller locks the down button;

[0094] S2.3: Insert the pin 12 between the switch 10 and the sleeve 11 to complete the mast erection operation.

[0095] In this embodiment, automatic control is adopted to control the lowering and raising of the mast body 1, which can greatly reduce labor intensity. At the same time, the lowering button and the raising button can be locked separately according to the position state of the mast body 1. While facilitating operation, it can avoid damage to structural components such as the mast body 1, the support assembly, and the knife 10 caused by misoperation, thereby effectively extending the service life of the entire mast.

[0096] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A retractable small mast, characterized in that: The invention comprises a mast body (1) and a mast base (2), wherein the mast base (2) is fixed on a ship's roof deck (3), a rotating shaft (4) is rotatably mounted in the mast base (2), one end of the mast body (1) is connected to the rotating shaft (4), a supporting assembly for supporting the mast body (1) in an inclined state is provided between one side of the mast body (1) and the mast base (2), and a locking device for locking the mast body (1) in an upright state is provided between the other side of the mast body (1) and the mast base (2).

2. A retractable small mast according to claim 1, characterized in that: A lightning rod (5) is provided at the top of the mast body (1), a radar (6) is provided at the middle of the mast body (1), and a plurality of mast signal lights (7) distributed along the axial direction of the mast body (1) are also provided on the mast body (1).

3. A retractable small mast according to claim 1 or 2, characterized in that: The support assembly comprises an upper support seat (8) and a lower support seat (9), wherein the upper support seat (8) is fixed on one side of the mast body (1), and the lower support seat (9) is fixed on one side of the mast base (2); when the mast body (1) is laid down, the upper support seat (8) is in contact with the lower support seat (9).

4. A retractable small mast according to claim 3, characterized in that: The locking device comprises a knife (10) and a sleeve (11); the knife (10) is mounted on the top of the mast base (2) on the other side of the mast body (1), and one end of the knife (10) is hingedly connected to the mast base (2); the sleeve (11) is fixed on the other side of the mast body (1); when the mast body (1) is erected, the other end of the knife (10) is inserted into the sleeve (11); and a pin (12) is movably inserted between the knife (10) and the sleeve (11).

5. A collapsible small mast according to claim 4, characterized in that: A worm gear mechanism (13) is detachably provided on one side of the mast base (2); the output end of the worm gear mechanism (13) is connected to the rotating shaft (4); and a power assembly is detachably installed on the input end of the worm gear mechanism (13).

6. A collapsible small mast according to claim 5, characterized in that: The power assembly is an operating crank (14), and a waterproof cover (15) capable of covering the input end of the worm gear mechanism (13) is hingedly mounted on the mast base (2) above the operating crank (14).

7. A collapsible small mast according to claim 5, characterized in that: The power assembly comprises a controller, a drive motor (16), a first infrared sensor (17), a second infrared sensor (18) and a third infrared sensor (19); the drive motor (16) is detachably mounted on the mast base (2), and the output end of the drive motor (16) is detachably connected to the input end of the worm gear mechanism (13); the first infrared sensor (17) is mounted on the support assembly, the second infrared sensor (18) is mounted on the mast base (2) on one side of the stopper, and the third infrared sensor (19) is mounted on the mast base (2) on one side of the latch (12); a down button and a stand button are respectively provided on the controller; the drive motor (16), the first infrared sensor (17), the second infrared sensor (18), the third infrared sensor (19), the down button and the stand button are all electrically connected to the controller.

8. A method for operating a retractable small mast, characterized in that: The method comprises the collapsible small mast as claimed in claim 4, and the method comprises the following steps: S1. Mast down: S1.1: Remove the pin (12) between the switch (10) and the ferrule (11); S1.2: Hold the mast body (1) with your hands and lift the gate knife (10) at the same time; S1.3: Slowly lower the mast body (1) until the upper support seat (8) and the lower support seat (9) are in contact and fit, completing the mast lowering operation; S2. Mast erection: S2.1: Slowly lift the mast body (1) by hand until the sleeve (11) rotates to the position of the knife (10); S2.2: Pull the knife (10) and place it into the ferrule (11); S2.3: Insert the pin (12) between the switch (10) and the clamp (11) to complete the mast erection operation.

9. A method for operating a collapsible small mast, characterized in that: The method comprises the collapsible small mast as claimed in claim 6, and the method comprises the following steps: S1. Mast down: S1.1: Remove the pin (12) between the switch (10) and the ferrule (11); S1.2: Lift the knife (10); S1.3: Install the operating crank (14) at the input end of the worm gear mechanism (13), and rotate the operating crank (14) to drive the mast body (1) to slowly fall down through the worm gear mechanism (13) until the upper support seat (8) and the lower support seat (9) are in contact and fit, thus completing the mast falling operation; S2. Mast erection: S2.1: Install the operating crank (14) at the input end of the worm gear mechanism (13), and rotate the operating crank (14) to drive the mast body (1) to slowly stand up through the worm gear mechanism (13) until the sleeve (11) rotates to the position of the knife (10); S2.2: Pull the knife (10) and place it into the ferrule (11); S2.3: Insert the pin (12) between the switch (10) and the clamp (11) to complete the mast erection operation.

10. A method for operating a collapsible small mast, characterized in that: The method comprises the collapsible small mast as claimed in claim 7, and the method comprises the following steps: S1. Mast down: S1.1: Remove the pin (12) between the switch (10) and the ferrule (11); S1.2: the knife (10) is lifted. After the knife (10) leaves the third infrared sensor (19), the controller unlocks the lay-down button; S1.3: The down button is pressed, and the controller controls the drive motor (16) to start forward rotation, and drives the mast body (1) to slowly down through the worm gear mechanism (13), until the upper support seat (8) and the lower support seat (9) are in contact and fit. At this time, the first infrared sensor (17) detects that the mast body (1) is down in place, and the controller locks the down button, unlocks the stand-up button, and controls the drive motor (16) to turn off, completing the mast down operation; S2. Mast erection: S2.1: The erection button is pressed, and the controller controls the drive motor (16) to start reverse rotation, driving the mast body (1) to slowly erect through the worm gear mechanism (13), until the sleeve (11) rotates to the position of the knife (10). At this time, the second infrared sensor (18) detects that the mast body (1) is erected in place, and the controller locks the erection button, unlocks the lay-down button, and controls the drive motor (16) to turn off; S2.2: Pull the knife (10) and put it into the card sleeve (11). At this time, the third infrared sensor (19) detects that the knife (10) is put into place, and the controller locks the down button; S2.3: Insert the pin (12) between the switch (10) and the clamp (11) to complete the mast erection operation.

Images