Transmission device applied to lifting mast in narrow space

Abstract

The utility model belongs to the technical field of lifting mast equipment, and particularly relates to a transmission device applied to a lifting mast in a narrow space. The device comprises a connecting frame, a hand-cranking driving mechanism and a transmission mechanism, the hand-cranking driving mechanism is arranged at the top of the connecting frame; the transmission mechanism is connected in the connecting frame; and the rocking driving mechanism penetrates through the top of the connecting frame and is connected with the transmission mechanism. Transmission in the parallel direction can be completed in a narrow space, and the bottleneck problem of an existing mast in the assembling and debugging process is solved. According to the utility model, the repeated back-and-forth operation by using a wrench or other tools is avoided, and the operation intensity of operators is reduced while the working efficiency is effectively improved. The connecting structure is simple to assemble, convenient to connect and easy to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting mast equipment, and in particular relates to a transmission device used for lifting masts in narrow spaces. Background Art

[0002] In a certain equipment launch vehicle, the mast is an important part of the panoramic sight. It is installed at the rotation center of the launch device and is used to drive the lifting and lowering of the optoelectronic turntable of the panoramic sight to detect distant targets. Under normal circumstances, the mast is driven by a motor to complete the lifting and lowering operations of the panoramic sight. However, in some special cases, such as motor failure, circuit damage, etc., the mast can also be raised and lowered manually. A manual lifting device is provided under the mast. Using a wrench or other thin tool to twist clockwise or counterclockwise can control the lifting and lowering of the mast.

[0003] The mast is an important part of the panoramic sight. To ensure that its performance meets the use requirements, the mast's manual lifting device needs to be frequently manually twisted during assembly and daily inspection and maintenance to drive the mast up and down to complete the corresponding assembly, inspection, and testing operations. However, the manual lifting device below is close to the vehicle floor. Currently, wrenches are used to complete the operation during daily use, assembly, and maintenance. The operation process is inconvenient and requires reciprocating operations, and the mast cannot be raised or lowered quickly.

[0004] Many similar products use lifting mast equipment and products. Most masts currently used are 3 to 5 sections. In order to achieve the set lifting height, the height after retraction is also high, resulting in very narrow operating space at the lower end. This problem is particularly prominent when using an inverted mast. When using an inverted mast, the mast must be erected before the lifting operation is completed, which results in an even smaller manual lifting space. Utility Model Content

[0005] The utility model provides a transmission device for lifting a mast in a narrow space, and aims to provide a transmission device that can facilitate operators to quickly complete the manual lifting operation of the mast, and greatly improve the efficiency of equipment assembly, maintenance and emergency use.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A transmission device for lifting a mast in a narrow space comprises a connecting frame, a hand-cranked drive mechanism and a transmission mechanism; the hand-cranked drive mechanism is placed on the top of the connecting frame; the transmission mechanism is connected in the connecting frame; the hand-cranked drive mechanism passes through the top of the connecting frame and is connected to the transmission mechanism.

[0008] It also includes two fixing members, which are clamped on the connecting frame and used for fixing the connecting frame.

[0009] The fixing member includes a U-shaped clamp, a screw, a rotating rod, an upper touch plate and a lower touch plate; a free end of the U-shaped clamp is provided with a threaded hole, and the screw is threadedly connected in the threaded hole; the upper end of the screw is connected to the rotating rod, and the upper end of the screw is connected to the upper touch plate; the inner side of a free end of the U-shaped clamp is connected to the lower touch plate, and the lower touch plate and the upper touch plate are arranged opposite to each other.

[0010] The connecting frame includes a bottom support plate, a side support plate and a top plate; two side support plates are provided; the projection of the center point of the top plate on the bottom support plate is located at the center position of the bottom support plate; the bottom support plate and the top plate are connected as a whole through two symmetrically arranged side support plates, so that a space for connecting the transmission mechanism is formed between the top plate, the bottom support plate and the two side support plates; the center positions of the top plate and the bottom support plate are respectively connected with bearings for rotatably connecting with the hand-cranked drive mechanism.

[0011] The hand-cranked drive mechanism includes a handwheel, a central axis and a handle assembly; the handle assembly is vertically connected to the handwheel; the handwheel is horizontally arranged; the center position of the lower surface of the handwheel is connected to a vertically arranged central axis; the lower end of the central axis passes through the top of the connecting frame and is rotatably connected to the bottom of the connecting frame; the central axis located in the connecting frame is connected to the transmission mechanism.

[0012] The handle assembly is foldably connected to the hand wheel.

[0013] The transmission mechanism comprises an inner pulley, a transmission belt and an outer pulley; the inner pulley is connected to the hand-cranked driving mechanism; the inner pulley and the outer pulley are connected by a transmission belt; and the transmission belt is respectively meshed with the inner pulley and the outer pulley.

[0014] Beneficial effects:

[0015] (1) The utility model is composed of a connecting frame, a hand-cranked driving mechanism and a transmission mechanism. The utility model is simple to assemble, convenient to connect and easy to operate.

[0016] (2) The utility model can complete the transmission in the parallel direction in a narrow space, thus solving the bottleneck problem in the assembly and debugging process of the existing mast.

[0017] (3) The use of the utility model avoids the need to use a wrench or other tools for repeated back-and-forth operations, thereby effectively improving work efficiency and reducing the operating intensity of operators.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0021] Figure 2 It is a structural sectional view of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the fixing member in the utility model.

[0023] In the figure: 1. bottom support plate; 2. side support plate; 3. bearing; 4. top plate; 5. hand wheel; 6. center axis; 7. handle assembly; 8. inner pulley; 9. transmission belt; 10. outer pulley; 11. mast lifting and fixing plate; 12. fixing piece; 13. manual lifting device at the bottom of the mast; 14. U-shaped clamp; 15. screw rod; 16. rotating rod; 17. upper touch plate; 18. lower touch plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] according to Figure 1-Figure 3 The transmission device shown is used for lifting masts in narrow spaces, comprising a connecting frame, a hand-cranked drive mechanism and a transmission mechanism; the hand-cranked drive mechanism is placed on the top of the connecting frame; the transmission mechanism is connected to the connecting frame; the hand-cranked drive mechanism passes through the top of the connecting frame and is connected to the transmission mechanism.

[0027] Furthermore, two fixing members 12 are included; the two fixing members 12 are clamped on the connecting frame to fix the connecting frame.

[0028] In actual use, one end of the transmission mechanism, that is, the end away from the hand-cranked drive mechanism, is installed at the manual lifting device 13 at the bottom of the mast of the mast to be raised and lowered, and it is necessary to ensure that the installation is stable. After that, the connecting frame and the hand-cranked drive mechanism are placed outside the bottom end of the mast, and the transmission mechanism is connected to the connecting frame and the hand-cranked drive mechanism, and the transmission mechanism is made level as a whole. After the installation is completed, the connecting frame is fixed with two fixings 12 to ensure that it does not move. After that, the transmission mechanism is driven by the hand-cranked drive mechanism, and force is applied to the manual lifting device 13 at the bottom of the mast to implement the lifting and lowering operations of the mast.

[0029] In specific applications, the mast can be raised and lowered by rotating the hand-cranked drive mechanism clockwise or counterclockwise according to the actual assembly process on site.

[0030] The utility model is simple to assemble, convenient to connect, and easy to operate. It can complete the transmission in the parallel direction in a narrow space, solving the bottleneck problem of the existing mast in the assembly and debugging process. The use of the utility model avoids the use of wrenches or other tools to repeatedly operate back and forth, effectively improving work efficiency while reducing the operating intensity of operators.

[0031] Embodiment 2:

[0032] according to Figure 3 The transmission device shown is used for lifting masts in narrow spaces, which is different from the first embodiment in that: the fixing member 12 includes a U-shaped clamp 14, a screw 15, a rotating rod 16, an upper touch plate 17 and a lower touch plate 18; a free end of the U-shaped clamp 14 is provided with a threaded hole, and the screw 15 is threadedly connected in the threaded hole; the upper end of the screw 15 is connected to the rotating rod 16, and the upper end of the screw 15 is connected to the upper touch plate 17; the inner side of a free end of the U-shaped clamp 14 is connected to the lower touch plate 18, and the lower touch plate 18 and the upper touch plate 17 are arranged opposite to each other.

[0033] In actual use, the bottom support plate 1 in the connecting frame and the mast lifting fixing plate 11 connected to the lifting mast are clamped and fixed together by two U-shaped clamps 14, and are stably fixed by screwing the screw 15. Under the clamping of the upper touch plate 17 and the lower touch plate 18, the effect of stable fixation is better.

[0034] Embodiment three:

[0035] according to Figure 1 and Figure 2The transmission device shown is used for lifting masts in narrow spaces, which is different from the first embodiment in that: the connecting frame includes a bottom support plate 1, a side support plate 2 and a top plate 4; two side support plates 2 are provided; the projection of the center point of the top plate 4 on the bottom support plate 1 is located at the center position of the bottom support plate 1; the bottom support plate 1 and the top plate 4 are connected as a whole by two symmetrically arranged side support plates 2, so that a space for connecting the transmission mechanism is formed between the top plate 4, the bottom support plate 1 and the two side support plates 2; the center positions of the top plate 4 and the bottom support plate 1 are respectively connected to bearings 3 for rotatably connecting to the hand-cranked drive mechanism.

[0036] In actual use, one end of the transmission mechanism is placed between the bottom support plate 1 and the top plate 4, and the lower end of the hand-cranked drive mechanism passes through the top plate 4 and the inner pulley 8 in the transmission mechanism in sequence, and is rotatably connected to the bottom support plate 1.

[0037] The connecting frame adopts the technical solution to realize the connection between the transmission mechanism and the hand-cranked drive mechanism, thereby conveniently realizing the transmission in the parallel direction in a narrow space, and solving the bottleneck problem of the existing mast in the assembly and debugging process.

[0038] Embodiment 4:

[0039] according to Figure 1 and Figure 2 The transmission device shown is used for raising and lowering masts in narrow spaces, which is different from the first embodiment in that: the hand-cranked drive mechanism includes a handwheel 5, a central axis 6 and a handle assembly 7; the handle assembly 7 is vertically connected to the handwheel 5; the handwheel 5 is horizontally arranged; the center position of the lower surface of the handwheel 5 is connected to a vertically arranged central axis 6; the lower end of the central axis 6 passes through the top of the connecting frame and is rotatably connected to the bottom of the connecting frame; the central axis 6 located in the connecting frame is connected to the transmission mechanism.

[0040] Furthermore, the handle assembly 7 can be foldably connected to the hand wheel 5 .

[0041] In actual use, by starting the handle assembly 7, the central shaft 6 is driven to rotate through the hand wheel 5, thereby driving the transmission mechanism to rotate, driving the manual lifting device 13 at the bottom of the mast, and realizing the lifting operation of the mast.

[0042] The hand wheel 5 is connected to the hand wheel 5 in a foldable manner and can be folded when not in use, thereby reducing the occupied space, facilitating storage, and avoiding accidental damage to the handle assembly 7.

[0043] Embodiment five:

[0044] according to Figure 1 and Figure 2The transmission device shown is used for lifting masts in narrow spaces, which is different from the first embodiment in that: the transmission mechanism includes an inner pulley 8, a transmission belt 9 and an outer pulley 10; the inner pulley 8 is connected to the hand-cranked drive mechanism; the inner pulley 8 and the outer pulley 10 are connected by a transmission belt 9; the transmission belt 9 is respectively engaged with the inner pulley 8 and the outer pulley 10.

[0045] In actual use, the inner pulley 8 is connected to the central shaft 6 in the hand-cranked drive mechanism, the outer pulley 10 is connected to the manual lifting device 13 at the bottom of the mast, and the inner pulley 8 and the outer pulley 10 are connected by a transmission belt 9.

[0046] When the hand-cranked drive mechanism is started, the handle assembly 7 is shaken to make the hand wheel 5 drive the central shaft 6 to rotate. The rotation of the central shaft 6 drives the inner pulley 8 to rotate, and drives the outer pulley 10 to rotate through the transmission belt 9, thereby driving the manual lifting device 13 at the bottom of the mast, thereby conveniently realizing the lifting and lowering operation of the mast in a narrow space.

[0047] In the absence of conflicts, technicians in this field can combine the relevant technical features in the above examples according to actual conditions to achieve corresponding technical effects. The specific combinations are not described here one by one.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0050] The above is only a preferred embodiment of the utility model. The utility model will not be limited to these embodiments shown in this article, but should conform to the widest range consistent with the principles and novel features disclosed in this article. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model still fall within the scope of the technical solution of the utility model.

Claims

1. A transmission device for lifting a mast in a narrow space, characterized in that: It includes a connecting frame, a hand-cranked driving mechanism and a transmission mechanism; the hand-cranked driving mechanism is placed on the top of the connecting frame; the transmission mechanism is connected in the connecting frame; the hand-cranked driving mechanism passes through the top of the connecting frame and is connected to the transmission mechanism; The connecting frame comprises a bottom support plate (1), a side support plate (2) and a top plate (4); the projection of the center point of the top plate (4) on the bottom support plate (1) is located at the center position of the bottom support plate (1); the bottom support plate (1) and the top plate (4) are connected as a whole via the side support plate (2), so that a space for connecting the transmission mechanism is formed between the top plate (4), the bottom support plate (1) and the support plate (2); the center positions of the top plate (4) and the bottom support plate (1) are respectively connected to bearings (3) for rotatably connecting to the hand-cranked drive mechanism; The hand-cranked drive mechanism comprises a hand wheel (5), a central shaft (6) and a handle assembly (7); the handle assembly (7) is vertically connected to the hand wheel (5); the hand wheel (5) is arranged horizontally; a central shaft (6) arranged vertically is connected to the center position of the lower surface of the hand wheel (5); the lower end of the central shaft (6) passes through the top of the connecting frame and is rotatably connected to the bottom of the connecting frame; the central shaft (6) located in the connecting frame is connected to the transmission mechanism; The transmission mechanism comprises an inner pulley (8), a transmission belt (9) and an outer pulley (10); the inner pulley (8) is connected to the hand-cranked drive mechanism; the inner pulley (8) and the outer pulley (10) are connected via a transmission belt (9); and the transmission belt (9) is respectively meshed with the inner pulley (8) and the outer pulley (10).

2. A transmission device for lifting a mast in a narrow space as claimed in claim 1, characterized in that: It also includes two fixing members (12); the two fixing members (12) are clamped on the connecting frame and are used to fix the connecting frame.

3. A transmission device for lifting a mast in a narrow space as claimed in claim 2, characterized in that: The fixing member (12) comprises a U-shaped clamp (14), a screw rod (15), a rotating rod (16), an upper touch plate (17) and a lower touch plate (18); a free end of the U-shaped clamp (14) is provided with a threaded hole, and the screw rod (15) is threadedly connected in the threaded hole; the upper end of the screw rod (15) is connected to the rotating rod (16), and the upper end of the screw rod (15) is connected to the upper touch plate (17); the inner side of a free end of the U-shaped clamp (14) is connected to the lower touch plate (18), and the lower touch plate (18) and the upper touch plate (17) are arranged relative to each other.

4. The transmission device for lifting a mast in a narrow space as claimed in claim 1, characterized in that: The handle assembly (7) is foldably connected to the hand wheel (5).

5. The transmission device for lifting a mast in a narrow space as claimed in claim 1, characterized in that: Two side support plates (2) are provided; the bottom support plate (1) and the top plate (4) are connected as one body via the two symmetrically arranged side support plates (2), so that a space for connecting the transmission mechanism is formed between the top plate (4), the bottom support plate (1) and the two side support plates (2).

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