Mast lifting manual device

Abstract

The mast lifting manual device comprises a base, the top of the base is rotationally connected with a motor transmission shaft, the lower end of the motor transmission shaft penetrates into an inner cavity of the base, the middle of the surface of the motor transmission shaft is fixedly connected with a transmission bevel gear in a sleeved mode, and the left side of the base is fixedly connected with a fixing base in a sleeved mode. Through mutual cooperation of all the parts, the inserting block can be inserted into the first inserting groove, the connecting base is fixed, and the connecting base cannot move left and right, so that the situation that when a motor drives a motor transmission shaft to rotate, a manual bevel gear moves towards a transmission bevel gear and is meshed with the transmission bevel gear, and consequently a rocking handle rotates to injure personnel is avoided, and safety is effectively improved; and the locking bevel gear is meshed with the manual bevel gear backwards to lock the manual bevel gear, so that the situation that the locking bevel gear and the manual transmission shaft swing slightly due to vibration is prevented, and the stability of a manual component in the motor driving process is remarkably enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted lifting masts, in particular to a manual device for lifting a mast. Background Technique

[0002] In the fields of radar, communication and other electronic countermeasures, in order to increase the operating range of optoelectronic systems such as vehicle-mounted reconnaissance, observation and fire control, and at the same time enable the vehicle to better conceal itself and improve its survival ability, optoelectronic sensors are installed on the carrying platform of a liftable mast. Therefore, the performance requirements for the liftable mast are getting higher and higher. On the one hand, the optoelectronic system carried by the mast needs to work with high stability and accuracy. On the other hand, the mast is installed on a moving vehicle. Therefore, factors such as the interaction between the vehicle, the mast and the optoelectronic sensor need to be considered during the design of the liftable mast. At the same time, a manual emergency mechanism is considered when designing the mast.

[0003] The existing patent (publication number: CN215634722U) discloses a manual device for lifting a mast using bevel gear transmission. The transmission bevel gear is arranged inside the base and is fixedly connected to the motor drive shaft and the belt pulley drive shaft; the manual bevel gear shaft passes through the through hole on the side wall of the base and enters the inside of the base. The inventor found that the following problems in the prior art were not well solved during the implementation of this solution: the manual transmission stop piece only fixes the manual bevel gear shaft when the manual bevel gear and the transmission bevel gear are engaged, and when the motor runs, the vibration generated is likely to cause the manual bevel gear shaft to move towards the transmission bevel gear. If the manual bevel gear moves to contact the transmission bevel gear, it will cause the wrench assembly to rotate. If someone is near the base at this time, rotating the wrench assembly will cause harm to the person. Content of the Utility Model

[0004] The purpose of the utility model is to provide a manual device for lifting a mast to solve the problems mentioned in the above background technique.

[0005] The technical solution of the utility model is a mast lifting manual device, including a base. The top of the base is rotatably connected with a motor drive shaft, and the lower end of the motor drive shaft penetrates into the inner cavity of the base. The middle part of the surface of the motor drive shaft is fixedly sleeved with a transmission bevel gear. The left side of the base is fixedly sleeved with a fixed seat. The left side of the inner cavity of the fixed seat is movably sleeved with a connecting seat. The inner cavity of the connecting seat is connected with a manual drive shaft by a bearing. The right end of the manual drive shaft is movably sleeved on the right side of the inner cavity of the fixed seat and penetrates to the outside. The right end face of the manual drive shaft is fixedly connected with a manual bevel gear. The manual bevel gear and the transmission bevel gear are aligned left and right. The middle parts of the top and bottom of the outer wall of the connecting seat are both provided with first slots, and the left sides of the top and bottom of the outer wall of the connecting seat are both provided with second slots. The left side of the outer wall of the base is fixedly connected with a connecting frame. The left side of the connecting seat is movably sleeved inside the connecting frame. The top and bottom of the inner side of the connecting frame are both provided with connecting bars. The middle parts of the bottom surfaces of the two connecting bars are both fixedly connected with insertion blocks. The front sides of the two connecting bars are both fixedly connected with threaded sleeves. The front side of the inner wall bottom surface of the connecting frame is connected with a bidirectional screw rod by a bearing. The two threaded sleeves are respectively threadedly sleeved on the upper and lower ends of the bidirectional screw rod. The upper end of the bidirectional screw rod is sleeved with a bearing on the top of the connecting frame and penetrates to the outside. The upper end face of the bidirectional screw rod is fixedly connected with a twisting handle. The left end face of the manual drive shaft is fixedly connected with a rocking handle.

[0006] In one embodiment, a regulating screw rod is threadedly connected to the front side of the base and close to the left side. The rear end face of the regulating screw rod is fixedly connected with a locking bevel gear. The locking bevel gear and the manual bevel gear are aligned front and back. The front end face of the regulating screw rod is fixedly connected with a handle.

[0007] In one embodiment, the two connecting bars are respectively arranged at the top and bottom of the connecting seat. The two insertion blocks are respectively aligned with the upper and lower first slots up and down. The second slots are matched with the insertion blocks.

[0008] In one embodiment, a movable opening is formed in the middle of the right side of the connecting frame. A sealing ring is fixedly connected inside the movable opening. The left end of the connecting seat is movably connected inside the movable opening and penetrates to the outside of the right side of the connecting frame.

[0009] In one embodiment, sliding grooves are formed on the top and bottom inner walls of the fixed seat. Sliding blocks are fixedly connected to the right sides of the top and bottom outer walls of the connecting seat. The two sliding blocks are respectively slidably connected in the upper and lower sliding grooves.

[0010] In one embodiment, connecting sleeves are fixedly connected to the rear sides of the two connecting bars. A guide rod is fixedly connected to the common rear sides of the top and bottom inner walls of the connecting frame. The two connecting sleeves are respectively movably sleeved on the upper and lower ends of the guide rod.

[0011] In one embodiment, the lower end of the motor drive shaft is fixedly connected to a pulley drive shaft through a coupling, and the lower end of the pulley drive shaft is rotatably connected to the bottom of the base and penetrates to the outside.

[0012] The beneficial effects provided by the present utility model are as follows:

[0013] Through the mutual cooperation of each component, the insertion block can be inserted into the first slot to fix the connection seat, preventing the connection seat from moving left and right. Thus, when the motor drives the motor drive shaft to rotate, it can avoid the manual bevel gear moving towards and meshing with the transmission bevel gear, which may cause harm to personnel when the crank rotates, effectively improving safety. Moreover, the locking bevel gear moves backward to mesh with the manual bevel gear, locking the manual bevel gear, thereby preventing small swings between the locking bevel gear and the manual drive shaft caused by vibration. This significantly enhances the stability of the manual components during the motor drive process. Description of the Drawings

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the main sectional view of the present utility model;

[0016] Figure 3 is the enlarged main sectional view of the fixed seat, connection seat and connection frame;

[0017] Figure 4 is the enlarged side sectional view of the connection frame;

[0018] Figure 5 is the side sectional view of the present utility model.

[0019] In the drawings, 1, base; 2, motor drive shaft; 3, transmission bevel gear; 4, fixed seat; 5, connection seat; 6, manual drive shaft; 7, manual bevel gear; 8, first slot; 9, second slot; 10, connection frame; 11, connection bar; 12, insertion block; 13, threaded sleeve; 14, bidirectional screw; 15, torsion handle; 16, crank; 17, adjusting screw; 18, locking bevel gear; 19, handle; 20, movable opening; 21, sealing ring; 22, chute; 23, slider; 24, connection sleeve; 25, guide rod; 26, pulley drive shaft. Detailed Embodiments

[0020] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The following will further describe the technical solutions of the present utility model with reference to the drawings of the embodiments of the present utility model. The present utility model is not limited to the following specific embodiments.

[0021] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] In one embodiment, as Figures 1-5 shown, a mast lifting manual device includes a base 1. A motor drive shaft 2 is rotatably connected to the top of the base 1. The lower end of the motor drive shaft 2 penetrates into the inner cavity of the base 1. A transmission bevel gear 3 is fixedly sleeved in the middle of the surface of the motor drive shaft 2. A fixed seat 4 is fixedly sleeved on the left side of the base 1. A connecting seat 5 is movably sleeved in the left inner cavity of the fixed seat 4. A manual drive shaft 6 is connected to the inner cavity of the connecting seat 5 by a bearing. The right end of the manual drive shaft 6 is movably sleeved on the right side of the inner cavity of the fixed seat 4 and penetrates to the outside. A manual bevel gear 7 is fixedly connected to the right end face of the manual drive shaft 6. The manual bevel gear 7 is aligned with the transmission bevel gear 3 left and right. First slots 8 are respectively opened in the middle of the top and bottom of the outer wall of the connecting seat 5. Second slots 9 are respectively opened on the left side of the top and bottom of the outer wall of the connecting seat 5. A connecting frame 10 is fixedly connected to the left side of the outer wall of the base 1. The left side of the connecting seat 5 is movably sleeved inside the connecting frame 10. Connecting bars 11 are respectively arranged at the top and bottom inside the connecting frame 10. Plugs 12 are fixedly connected to the middle of the bottom surfaces of the two connecting bars 11. Threaded sleeves 13 are respectively fixedly connected to the front sides of the two connecting bars 11. A bidirectional screw 14 is connected to the front side of the bottom surface of the inner wall of the connecting frame 10 by a bearing. The two threaded sleeves 13 are respectively threadedly sleeved on the upper and lower ends of the bidirectional screw 14. The upper end of the bidirectional screw 14 is sleeved on the top of the connecting frame 10 by a bearing and penetrates to the outside. A twist handle 15 is fixedly connected to the upper end face of the bidirectional screw 14. A crank 16 is fixedly connected to the left end face of the manual drive shaft 6.

[0023] In order to lock the manual bevel gear 7 after it disengages from the transmission bevel gear 3 and prevent it from rotating, an adjusting screw 17 is threadedly connected to the front side of the base 1 and near the left side. A locking bevel gear 18 is fixedly connected to the rear end face of the adjusting screw 17. The locking bevel gear 18 is aligned with the manual bevel gear 7 front and rear. A handle 19 is fixedly connected to the front end face of the adjusting screw 17.

[0024] In order to enable the two insertion blocks 12 to be inserted into the first slots 8 or the second slots 9 on the upper and lower sides respectively, the two connecting bars 11 are respectively arranged at the top and bottom of the connecting base 5, the two insertion blocks 12 are respectively vertically aligned with the first slots 8 on the upper and lower sides, and the second slots 9 are matched with the insertion blocks 12.

[0025] In order to improve the sealing performance of the connecting frame 10, a movable opening 20 is formed in the middle of the right side of the connecting frame 10, a sealing ring 21 is fixedly connected in the movable opening 20, and the left end of the connecting base 5 is movably connected in the movable opening 20 and penetrates to the outside of the right side of the connecting frame 10.

[0026] In order to facilitate the vertical alignment of the first slots 8 or the second slots 9 with the insertion blocks 12 after the connecting base 5 moves left and right, sliding grooves 22 are formed in the top and bottom surfaces of the inner wall of the fixed base 4, and the right sides of the top and bottom surfaces of the outer wall of the connecting base 5 are fixedly connected with sliding blocks 23, and the two sliding blocks 23 are respectively slidably connected in the sliding grooves 22 on the upper and lower sides.

[0027] In order to limit the connecting bars 11 so that the threaded sleeves 13 do not rotate with the bidirectional screw 14, connecting sleeves 24 are fixedly connected to the rear sides of the two connecting bars 11, and a guide rod 25 is fixedly connected to the common rear sides of the top and bottom surfaces of the inner wall of the connecting frame 10, and the two connecting sleeves 24 are respectively movably sleeved on the upper and lower ends of the guide rod 25.

[0028] In order to connect the motor transmission shaft 2 with the component connected to the mast, a pulley transmission shaft 26 is fixedly connected to the lower end of the motor transmission shaft 2 through a coupling, and the lower end of the pulley transmission shaft 26 is rotatably connected to the bottom of the base 1 and penetrates to the outside.

[0029] Working principle: When the present utility model is in use, first, the twisting handle 15 can be twisted to make the bidirectional screw rod 14 rotate. The rotation of the bidirectional screw rod 14 causes the two threaded sleeves 13 to move towards each other. The threaded sleeves 13 drive the connecting bar 11 to move, and the connecting bar 11 drives the inserting blocks 12 to move, so that the two inserting blocks 12 are respectively inserted into the first slots 8 on the upper and lower sides, fixing the connecting seat 5 and preventing the connecting seat 5 from moving left and right. Thus, when the motor drives the motor transmission shaft 2 to rotate, the manual bevel gear 7 will not move towards the transmission bevel gear 3 and engage, preventing the rotation of the rocking handle 16 from causing harm to personnel, effectively improving safety. When the twisting handle 15 is twisted in the reverse direction, the two inserting blocks 12 move away from each other and are pulled out of the first slots 8, releasing the locking of the connecting seat 5. Then, the connecting seat 5 is pushed to the right to make the manual bevel gear 7 move to the right and engage with the transmission bevel gear 3. Next, the twisting handle 15 is twisted again to make the two inserting blocks 12 move towards each other and insert into the second slots 9 on the upper and lower sides to fix the connecting seat 5. Then, by rocking the rocking handle 16, the manual bevel gear 7 can drive the transmission bevel gear 3 to rotate. When the manual bevel gear 7 disengages from the transmission bevel gear 3, it is pulled to the maximum distance to the left. At this time, the manual bevel gear 7 and the locking bevel gear 18 are aligned front and back. Then, the handle 19 is twisted to make the adjusting screw rod 17 rotate. The rotation of the adjusting screw rod 17 causes it to move backward, and the adjusting screw rod 17 drives the locking bevel gear 18 to move backward, making the locking bevel gear 18 engage with the manual bevel gear 7 and locking the manual bevel gear 7, thereby preventing the small swing of the locking bevel gear 7 and the manual transmission shaft 6 caused by vibration, significantly enhancing the stability of the manual components during the motor drive process.

[0030] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0031] The above embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A manual device for mast lifting, characterized in that, It includes a base, at the top of which a motor drive shaft is rotatably connected. The lower end of the motor drive shaft penetrates into the inner cavity of the base. In the middle of the surface of the motor drive shaft, a transmission bevel gear is fixedly sleeved. On the left side of the base, a fixed seat is fixedly sleeved. Inside the left cavity of the fixed seat, a connecting seat is movably sleeved. Inside the connecting seat, a manual drive shaft is connected by a bearing. The right end of the manual drive shaft is movably sleeved on the right side of the inner cavity of the fixed seat and penetrates to the outside. On the right end face of the manual drive shaft, a manual bevel gear is fixedly connected. The manual bevel gear and the transmission bevel gear are aligned left and right. In the middle of the top and bottom surfaces of the outer wall of the connecting seat, first slots are respectively opened. On the left side of the top and bottom surfaces of the outer wall of the connecting seat, second slots are respectively opened. On the left side of the outer wall of the base, a connecting frame is fixedly connected. The left side of the connecting seat is movably sleeved inside the connecting frame. At the top and bottom of the inner side of the connecting frame, connecting bars are respectively provided. In the middle of the bottom surfaces of the two connecting bars, inserting blocks are respectively fixedly connected. On the front side of the two connecting bars, threaded sleeves are respectively fixedly connected. On the front side of the inner wall bottom surface of the connecting frame, a bidirectional screw rod is connected by a bearing. The two threaded sleeves are respectively threadedly sleeved on the upper and lower ends of the bidirectional screw rod. The upper end of the bidirectional screw rod is sleeved by a bearing on the top of the connecting frame and penetrates to the outside. On the upper end face of the bidirectional screw rod, a twisting handle is fixedly connected. On the left end face of the manual drive shaft, a rocking handle is fixedly connected.

2. A manual mast lifting device according to claim 1, characterized in that: At the front side of the base and near the left side, an adjusting screw rod is threadedly connected. On the rear end face of the adjusting screw rod, a locking bevel gear is fixedly connected. The locking bevel gear and the manual bevel gear are aligned front and back. On the front end face of the adjusting screw rod, a handle is fixedly connected.

3. A manual mast lifting device according to claim 1, characterized in that: The two connecting bars are respectively arranged at the top and bottom of the connecting seat. The two inserting blocks are respectively aligned with the upper and lower first slots up and down. The second slots are matched with the inserting blocks.

4. A manual mast lifting device according to claim 1, characterized in that: In the middle of the right side of the connecting frame, a movable opening is opened. Inside the movable opening, a sealing ring is fixedly connected. The left end of the connecting seat is movably connected inside the movable opening and penetrates to the outside of the right side of the connecting frame.

5. A manual mast lifting device as claimed in claim 1, wherein: On the top and bottom surfaces of the inner wall of the fixed seat, chutes are respectively opened. On the right side of the top and bottom surfaces of the outer wall of the connecting seat, sliding blocks are respectively fixedly connected. The two sliding blocks are respectively slidably connected inside the upper and lower chutes.

6. A manual mast lifting device according to claim 1, characterized in that: On the rear sides of the two connecting bars, connecting sleeves are respectively fixedly connected. On the rear sides of the top and bottom surfaces of the inner wall of the connecting frame, a guiding rod is fixedly connected together. The two connecting sleeves are respectively movably sleeved on the upper and lower ends of the guiding rod.

7. A manual mast lifting device according to claim 1, characterized in that: The lower end of the motor drive shaft is fixedly connected with a belt wheel drive shaft through a coupling. The lower end of the belt wheel drive shaft is rotatably connected to the bottom of the base and penetrates to the outside.

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