Mute driving structure of lifting platform

Abstract

The utility model discloses a silent driving structure of a lifting platform, and relates to the field of lifting platforms, the silent driving structure comprises a supporting frame, the inner side of the supporting frame is provided with a limiting sliding groove, a bearing platform is movably clamped in the limiting sliding groove, the top of the supporting frame is fixedly provided with a mounting frame, and the mounting frame is provided with a sliding groove. A through opening located in the inner side of the mounting frame is formed in the top of the supporting frame, a driving assembly is fixedly installed at the top of the supporting frame, and a sound insulation assembly located on the outer side of the driving assembly is fixedly installed at the top of the supporting frame. The connecting rope is wound and unwound through the winding drum mounted in the mounting frame at the top of the supporting frame to drive the sliding frame to ascend and descend in cooperation with the rollers mounted on the two sides of the sliding frame and located in the limiting sliding grooves, and the rollers are attached to the inner walls of the limiting sliding grooves to roll in the ascending and descending process of the sliding frame, so that friction is reduced, the structure is simple, and operation is convenient. Large noise generated when a screw rod is adopted for driving is reduced, and discomfort to passengers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of lifting platforms, and particularly relates to a silent driving structure for a lifting platform. Background Art

[0002] A lifting platform is a multi-functional lifting and loading / unloading mechanical device, which can be divided into fixed type and mobile type: the mobile type is divided into straight arm type, articulated arm type, scissor type, mast type, aluminum alloy lifting platform, telescopic cylinder type; the fixed type includes scissor type, guide rail type lifting platform, chain type lifting platform, loading and unloading platform and attached electric construction platform, etc. Among them, the lifting platform driven by a screw is widely used.

[0003] In the existing screw driving structure of the lifting platform, the friction force during lifting is large, resulting in low lifting efficiency. When operating, the noise inside the platform is about 60 decibels, and such a sound gives passengers an uncomfortable feeling. Content of the Utility Model

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A silent driving structure for a lifting platform, including a support frame. A limiting sliding groove is opened inside the support frame, and a bearing platform is movably clamped inside the limiting sliding groove. The top of the support frame is fixedly installed with a mounting frame. A through hole located inside the mounting frame is opened at the top of the support frame. A driving component is fixedly installed at the top of the support frame, and a sound insulation component located outside the driving component is fixedly installed at the top of the support frame; the bearing platform includes a sliding frame movably clamped inside the limiting sliding groove. Connecting shafts are fixedly connected to both the left and right sides of the sliding frame, and rollers fitting the inside of the limiting sliding groove are rotatably installed outside the connecting shafts; the driving component includes a rotating shaft rotatably installed inside the mounting frame. A winding drum located inside the through hole is fixedly installed outside the rotating shaft, and a connecting rope connecting to the top of the sliding frame is arranged outside the winding drum.

[0006] A further improvement of the technical solution of the utility model lies in that: a worm gear is fixedly installed at the rear of the outside of the rotating shaft. A reduction gearbox and a driving motor are fixedly installed at the top of the support frame. The driving motor is connected to the input end outside the reduction gearbox, and a worm is fixedly connected to the outside of the output end inside the reduction gearbox.

[0007] A further improvement of the technical solution of the utility model lies in that: a support plate is fixedly connected to the lower part of the front side of the sliding frame. A protective frame is fixedly installed on the top of the support plate, and an opening and closing door is movably hinged to the front side of the protective frame.

[0008] A further improvement of the technical solution of the present utility model lies in that: the sound insulation component includes a housing, the outer side of the housing is fixedly connected with ear plates, the inside of the ear plates is movably installed with fixing bolts, and the inside of the housing is fixedly connected with a sound insulation inner layer.

[0009] A further improvement of the technical solution of the present utility model lies in that: the worm is arranged above the worm gear, and the worm is rotatably connected to the inside of the mounting frame.

[0010] A further improvement of the technical solution of the present utility model lies in that: the sound insulation inner layer includes sound insulation felt, the inside of the sound insulation felt is adhesively provided with sound insulation sponge, and the outside of the sound insulation felt is provided with an adhesive layer.

[0011] A further improvement of the technical solution of the present utility model lies in that: a card slot is opened at the bottom of the housing, and a rubber pad is movably clamped inside the card slot.

[0012] A further improvement of the technical solution of the present utility model lies in that: the roller is made of rubber.

[0013] Due to the adoption of the above technical solution, the technical progress obtained by the present utility model compared with the prior art is:

[0014] The present utility model provides a silent driving structure for a lifting platform. By winding and unwinding a connecting rope through a winding drum installed in a mounting frame at the top of a support frame to drive a sliding frame to lift, and matching with rollers installed on both sides of the sliding frame and located inside a limit chute, the rollers roll along the inner wall of the limit chute during the lifting process of the sliding frame, thereby reducing friction. The structure is simple, reducing the large noise generated when using a screw drive and reducing discomfort to passengers.

[0015] The present utility model provides a silent driving structure for a lifting platform. Through a sound insulation component installed at the top of the support frame and covering the outside of the driving component, the sound insulation component blocks the noise generated by the driving component during operation, thereby reducing the spillage of the noise generated by the operation of the driving component to the outside and further improving the silent effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the silent driving structure of the lifting platform of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the carrying platform of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the driving component of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the sound insulation component of the present utility model;

[0020] Figure 5 This is a schematic cross-sectional structure diagram of the sound insulation inner cladding of the present utility model.

[0021] In the figure: 1, support frame; 2, limit chute; 3, bearing platform; 31, sliding frame; 32, connecting shaft; 33, roller; 34, support plate; 35, protective frame; 36, opening and closing door; 4, mounting frame; 5, through hole; 6, driving assembly; 61, rotating shaft; 62, winding drum; 63, connecting rope; 64, worm gear; 65, reduction box; 66, driving motor; 67, worm; 7, sound insulation assembly; 71, outer shell; 72, ear plate; 73, fixing bolt; 74, sound insulation inner cladding; 741, sound insulation felt; 742, sound insulation sponge; 743, adhesive layer; 75, card slot; 76, rubber pad. Specific embodiments

[0022] The following further details the present utility model:

[0023] As Figures 1 to 5 shown, the present utility model provides a silent driving structure for a lifting platform, including a support frame 1. A limit chute 2 is provided inside the support frame 1. A bearing platform 3 is movably clamped inside the limit chute 2. An installation frame 4 is fixedly installed at the top of the support frame 1. A through hole 5 located inside the installation frame 4 is provided at the top of the support frame 1. A driving assembly 6 is fixedly installed at the top of the support frame 1. A sound insulation assembly 7 located outside the driving assembly 6 is fixedly installed at the top of the support frame 1; the bearing platform 3 includes a sliding frame 31 movably clamped inside the limit chute 2. Connecting shafts 32 are fixedly connected to both the left and right sides of the sliding frame 31. Rollers 33 that fit against the inner side of the limit chute 2 are rotatably installed outside the connecting shafts 32; the driving assembly 6 includes a rotating shaft 61 rotatably installed inside the installation frame 4. A winding drum 62 located inside the through hole 5 is fixedly installed outside the rotating shaft 61. A connecting rope 63 connected to the top of the sliding frame 31 is provided outside the winding drum 62.

[0024] By winding and unwinding the connecting rope 63 through the winding drum 62 installed inside the installation frame 4 at the top of the support frame 1 to drive the sliding frame 31 to lift, and cooperating with the rollers 33 installed on both sides of the sliding frame 31 and located inside the limit chute 2, the rollers 33 roll against the inner wall of the limit chute 2 during the lifting process of the sliding frame 31, thereby reducing friction. The structure is simple, reducing the relatively large noise when using a screw drive, reducing discomfort to passengers. At the same time, through the sound insulation assembly 7 installed at the top of the support frame 1 and covering the outside of the driving assembly 6, the noise generated by the driving assembly 6 during operation is blocked by the sound insulation assembly 7, thereby reducing the spillage of the noise generated by the operation of the driving assembly 6 to the outside, and further improving the sound insulation and noise reduction effect.

[0025] As Figure 3As shown, a worm gear 64 is fixedly installed at the rear of the outside of the rotating shaft 61. A reduction gearbox 65 and a driving motor 66 are fixedly installed at the top of the support frame 1. The driving motor 66 is connected to the input end on the outside of the reduction gearbox 65. A worm 67 is fixedly connected to the outside of the output end inside the reduction gearbox 65.

[0026] By controlling the rotation of the driving motor 66 to transmit power to the input end of the reduction gearbox 65 and after decelerating and increasing torque by the reduction gearbox 65, it is transmitted to the worm 67 through the output end. By the rotation of the worm 67, the worm gear 64 engaged therewith is driven to rotate. By the rotation of the worm gear 64, the rotating shaft 61 is driven to rotate, so as to control the winding and unwinding of the connecting rope 63 by the winding drum 62 to drive the lifting platform 3 to lift and reduce noise.

[0027] As Figure 2 shown, a support plate 34 is fixedly connected to the lower part of the front side of the sliding frame 31. A protective frame 35 is fixedly installed on the top of the support plate 34. An opening and closing door 36 is movably hinged to the front side of the protective frame 35.

[0028] The opening and closing door 36 cooperates with the protective frame 35 to provide protection for passengers.

[0029] As Figure 4 shown, the sound insulation component 7 includes a housing 71. An ear plate 72 is fixedly connected to the outside of the housing 71. A fixing bolt 73 is movably installed inside the ear plate 72. A sound insulation inner lining 74 is fixedly connected to the inside of the housing 71.

[0030] The housing 71 is used to cover the driving component 6. The rubber pad 76 inside the card slot 75 contacts the top of the support frame 1 for sealing. The sound insulation inner lining 74 inside the housing 71 blocks the noise generated during the operation of the driving component 6 to improve the sound insulation effect.

[0031] As Figure 3 shown, the worm 67 is arranged above the worm gear 64. The worm 67 is rotatably connected to the inside of the mounting frame 4.

[0032] Since the worm 67 is located above the worm gear 64, when the worm 67 rotates, it drives the worm gear 64 to drive the rotating shaft 61 to rotate, thereby controlling the lifting of the lifting platform 3 and improving the sound insulation effect.

[0033] As Figure 5 shown, the sound insulation inner lining 74 includes a sound insulation felt 741. A sound insulation sponge 742 is adhesively arranged inside the sound insulation felt 741. An adhesive layer 743 is arranged on the outside of the sound insulation felt 741.

[0034] The sound insulation felt 741 and the sound insulation sponge 742 are adhered to the inside of the housing 71 through the adhesive layer 743. The sound insulation felt 741 and the sound insulation sponge 742 double-block the noise generated by the driving component 6 to improve the sound insulation effect.

[0035] As shown Figure 4 in FIG. Figure 4 , a card slot 75 is formed at the bottom of the housing 71, and a rubber pad 76 is movably clamped inside the card slot 75.

[0036] When the housing 71 is installed on the support frame 1, the rubber pad 76 in the card slot 75 fits against the top of the support frame 1 to ensure a tight fit.

[0037] As shown Figure 2 in FIG. Figure 2 , the roller 33 is made of rubber.

[0038] By using the roller 33 made of high-strength rubber material to roll along the limit chute 2, the friction force is reduced to improve the sound insulation effect.

[0039] Next, the working principle of the silent drive structure of the lifting platform will be specifically described.

[0040] As shown Figures 1 to 5 in FIG. Figures 1 to 5 , by opening the opening and closing door 36, standing on the support plate 34 and closing and locking the opening and closing door 36, the protective frame 35 plays a protective role. By controlling the driving motor 66 to rotate, the power is transmitted to the input end of the speed reducer 65 and decelerated and torque-increased by the speed reducer 65, and then transmitted to the worm 67 through the output end. By the rotation of the worm 67, the worm gear 64 engaged therewith is driven to rotate. By the rotation of the worm gear 64, the rotating shaft 61 is driven to rotate. By the rotating shaft 61, the winding drum 62 located inside the through port 5 is driven to rotate. By the rotation of the winding drum 62, the connecting rope 63 is wound up. By the winding of the connecting rope 63, the sliding frame 31 connected thereto is pulled to move upward along the limit chute 2. By the rollers 33 outside the connecting shafts 32 on both sides of the sliding frame 31 rolling along the inner side of the limit chute 2 to reduce friction, the sliding frame 31 drives the support plate 34 to complete the lifting operation. By using the fixing bolts 73 to pass through the ear plates 72 and be installed and fixed on the top of the support frame 1, the housing 71 covers the driving assembly 6. By the rubber pad 76 inside the card slot 75 contacting the top of the support frame 1 for sealing, the sound insulation inner layer 74 inside the housing 71 is divided into a sound insulation felt 741 and a sound insulation sponge 742 to block the noise generated during the operation of the driving assembly 6.

[0041] The above generally describes the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are all within the protection scope of the present invention.

Claims

1. A silent drive structure for a lifting platform, comprising a support frame (1), characterized in that: A limiting chute (2) is provided inside the support frame (1). A carrying platform (3) is movably clamped inside the limiting chute (2). The top of the support frame (1) is fixedly installed with a mounting frame (4). A through port (5) located inside the mounting frame (4) is provided at the top of the support frame (1). A driving assembly (6) is fixedly installed at the top of the support frame (1). A sound insulation assembly (7) located outside the driving assembly (6) is fixedly installed at the top of the support frame (1); The carrying platform (3) includes a sliding frame (31) movably clamped inside the limiting chute (2). Connecting shafts (32) are fixedly connected to both the left and right sides of the sliding frame (31). Rollers (33) that fit against the inside of the limiting chute (2) are rotatably installed on the outside of the connecting shafts (32); The driving assembly (6) includes a rotating shaft (61) rotatably installed inside the mounting frame (4). A winding drum (62) located inside the through port (5) is fixedly installed on the outside of the rotating shaft (61). A connecting rope (63) connecting to the top of the sliding frame (31) is provided on the outside of the winding drum (62).

2. The silent drive structure of a lifting platform according to claim 1, wherein: A worm gear (64) is fixedly installed at the rear of the outside of the rotating shaft (61). A reduction gearbox (65) and a driving motor (66) are fixedly installed at the top of the support frame (1). The driving motor (66) is connected to the input end outside the reduction gearbox (65). A worm (67) is fixedly connected to the outside of the output end inside the reduction gearbox (65).

3. The silent drive structure of a lifting platform according to claim 1, characterized in that: A support plate (34) is fixedly connected to the lower part of the front side of the sliding frame (31). A protective frame (35) is fixedly installed on the top of the support plate (34). An opening and closing door (36) is movably hinged to the front side of the protective frame (35).

4. A silent drive structure for a lifting platform according to claim 2, characterized in that: The sound insulation assembly (7) includes a housing (71). Ear plates (72) are fixedly connected to the outside of the housing (71). Fixing bolts (73) are movably installed inside the ear plates (72). A sound insulation inner lining (74) is fixedly connected to the inside of the housing (71).

5. The silent drive structure of a lifting platform according to claim 2, characterized in that: The worm (67) is arranged above the worm gear (64). The worm (67) is rotatably connected to the inside of the mounting frame (4).

6. A silent drive structure for a lifting platform according to claim 4, characterized in that: The sound insulation inner lining (74) includes a sound insulation felt (741). A sound insulation sponge (742) is adhesively arranged inside the sound insulation felt (741). An adhesive layer (743) is provided on the outside of the sound insulation felt (741).

7. The silent drive structure of a lifting platform according to claim 6, characterized in that: A card slot (75) is provided at the bottom of the housing (71). A rubber pad (76) is movably clamped inside the card slot (75).

8. The silent drive structure of a lifting platform according to claim 1, characterized in that: The roller (33) is made of rubber material.

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