Transportation lifting mechanism for fire engineering

Abstract

The utility model relates to a transportation lifting mechanism for fire protection engineering, which comprises a bottom plate, a supporting plate and four groups of folding pieces, a driving box is arranged at the upper end of the bottom plate, a transmission mechanism is arranged in the driving box, the four side walls of the driving box are rotatably connected with screw rods, and the folding pieces comprise threaded sleeves. The utility model relates to the technical field of fire-fighting transportation equipment. According to the transportation lifting mechanism for the fire engineering, when a heavy object is lifted, the gravity of a supporting plate and the gravity of the heavy object act on a supporting rod and a threaded sleeve, and due to the fact that the supporting rod has an angle, the inclination of the supporting rod changes the direction of the gravity of the supporting plate and the gravity of the heavy object; the gravity of the supporting plate and the gravity of the heavy object are decomposed into two components along the supporting rod and perpendicular to the supporting rod, the component perpendicular to the supporting rod directly acts on the supporting rod, and due to the fact that the lead screw makes contact with the supporting rod, the pressure of the heavy object on the lead screw is effectively reduced, and then the effect of reducing the abrasion speed of the lead screw is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting transportation equipment, in particular to a transportation lifting mechanism used in fire-fighting engineering. Background Art

[0002] The fire protection engineering system includes fire water system, automatic fire alarm system, gas fire extinguishing system, smoke exhaust system, emergency evacuation system, fire communication system, fire broadcast system, foam fire extinguishing system and fire separation facilities. In fire protection engineering, lifting and transportation mechanism plays a very important role.

[0003] Chinese patent publication number CN217377170U provides an efficient transportation and lifting device for fire-fighting engineering, which relates to the technical field of fire-fighting engineering equipment. The efficient transportation and lifting device for fire-fighting engineering includes a support seat, and two symmetrically distributed support columns are arranged on the top of the support seat. The interiors of the two support columns are both threaded with screw rods, and the screw rods are rotatably connected to the interior of the support seat. A first driving mechanism for driving the screw rod to rotate is arranged on one side of the support seat, and a limiting mechanism for limiting the support column to rotate with the screw rod is arranged between the support column and the support seat; the items to be transported are placed on the placement plate, and the rotating shaft is driven to rotate by the second driving mechanism, so that the rope drum reels the traction rope, thereby transporting the items over a short distance. When the required transportation distance is high, the screw rod is driven to rotate by the first driving mechanism, so that the support column is pushed and lifted by the screw rod under the limitation of the limiting mechanism, thereby effectively lifting the maximum transportation height of the equipment.

[0004] In the above technology, the first stage of lifting is achieved through the second drive mechanism, the rope drum and the traction rope, and the second stage of lifting is achieved through the first drive mechanism, the screw rod and the support column. However, since the fire-fighting transportation equipment is a continuous and long-term used equipment, and in the process of lifting and transporting heavy objects through the screw rod and the support column, the gravity of the object and the gravity of the equipment are evenly pressed on the surface of the screw rod. At this time, the contact pressure between the threaded part of the screw rod and the internal threaded part of the support column is relatively large, which greatly increases the wear rate of the screw rod, resulting in a reduction in the service life of the equipment. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a transport and lifting mechanism for fire engineering, so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A transport lifting mechanism for fire engineering, comprising a bottom plate, a supporting plate and four groups of folding parts, wherein a driving box is arranged at the upper end of the bottom plate, a transmission mechanism is arranged inside the driving box, and four side walls of the driving box are rotatably connected with screw rods;

[0008] The folding part includes a threaded sleeve, which is threadably matched with the screw rod and sleeved on the outer surface of the screw rod. Two support rods are rotatably arranged on the circumferential side of the threaded sleeve, and one end of the two support rods away from the threaded sleeve is rotatably connected to the corners of the base plate and the support plate respectively.

[0009] Furthermore, a first telescopic rod is arranged at the center of the upper end of the base plate, and a driving motor is arranged at the upper end of the first telescopic rod.

[0010] Furthermore, the driving box is fixedly mounted on the top of the driving motor, and the motor shaft of the driving motor extends into the interior of the driving box.

[0011] Furthermore, the transmission mechanism includes four linked bevel gears and one driving bevel gear. The four linked bevel gears are rotatably connected to the four inner side walls of the driving box respectively. The driving bevel gear is installed at the inner bottom end of the driving box. The driving bevel gear and each of the linked bevel gears are meshed.

[0012] Furthermore, the driving bevel gear is fixedly mounted on the motor shaft of the driving motor, and the four linkage bevel gears are fixedly connected to the four lead screws respectively.

[0013] Furthermore, a support frame is commonly provided at one end of the four screw rods away from the drive box, and a second telescopic rod is provided at the bottom end of the support frame at positions corresponding to the four corners of the bottom plate.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects:

[0015] 1. The transport and lifting mechanism for fire engineering, when lifting heavy objects, the gravity of the support plate and the heavy objects acts on the support rod and the threaded sleeve, and because the support rod has an angle, the inclination of the support rod changes the direction of the gravity of the support plate and the heavy objects, and the gravity of the support plate and the heavy objects is decomposed into two components along the support rod and perpendicular to the support rod, and the component perpendicular to the support rod directly acts on the support rod, and because the screw rod is in contact with the support rod, the pressure of the heavy object on the screw rod is effectively reduced, thereby achieving the effect of reducing the wear rate of the screw rod;

[0016] 2. This transport and lifting mechanism for fire-fighting engineering, through the setting of a support frame and four second telescopic rods, makes the axis lines of the four screw rods in the same plane, and through the setting of the second telescopic rods, makes the top surface of the support frame always parallel to the top surface of the bottom plate, thereby effectively improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 creative work.

[0018] Figure 1 The utility model is a structural schematic diagram of a transport lifting mechanism used in fire engineering.

[0019] Figure 2 The utility model is a schematic diagram of the connection structure of four groups of folding parts and a driving box of a transport lifting mechanism used in fire engineering.

[0020] Figure 3 The utility model is a structural schematic diagram of a folding member of a transport lifting mechanism for fire engineering.

[0021] Figure 4 The utility model is a structural schematic diagram of a transmission mechanism of a transport lifting mechanism used in fire engineering.

[0022] Figure 5 The utility model is a structural schematic diagram of a folding member of a transport lifting mechanism for fire engineering in a folded state.

[0023] Figure 6 It is a structural schematic diagram of a folding member of a transport lifting mechanism for fire engineering of the utility model in an open state.

[0024] In the figure, 1, bottom plate; 2, support plate; 3, folding member; 31, threaded sleeve; 32, support rod; 4, drive box; 5, transmission mechanism; 51, linkage bevel gear; 52, drive bevel gear 6, screw; 7, first telescopic rod; 8, drive motor; 9, support frame; 10, second telescopic rod. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Example:

[0027] Reference Figure 1-Figure 6The utility model discloses a transport and lifting mechanism for fire engineering, comprising a bottom plate 1, a support plate 2 and four groups of folding members 3, a driving box 4 is arranged at the upper end of the bottom plate 1, a transmission mechanism 5 is arranged inside the driving box 4, and four side walls of the driving box 4 are rotatably connected with screw rods 6;

[0028] The folding member 3 includes a threaded sleeve 31, which is threadedly matched with the screw rod 6 and sleeved on the outer surface of the screw rod 6. Two support rods 32 are rotatably arranged on the circumferential side of the threaded sleeve 31, and one end of the two support rods 32 away from the threaded sleeve 31 is rotatably connected to the corners of the base plate 1 and the support plate 2 respectively.

[0029] In this embodiment, when in use, the four screw rods 6 are rotated synchronously by driving the motor 8 in coordination with the transmission mechanism 5. When the screw rods 6 rotate, the threaded sleeve 31 is pushed along the axis of the screw rod 6 and gradually moves away from the drive box 4. In this process, the angle between the support rod 32 and the threaded sleeve 31 will gradually expand. Figure 5 and Figure 6 As shown, Figure 5 It is a structural plan view of the support rod 32 and the threaded sleeve 31 before the angle is expanded. Figure 6 The structural plane diagram after the angle between the support rod 32 and the threaded sleeve 31 is expanded;

[0030] After the angle between the support rod 32 and the threaded sleeve 31 is expanded, since the connection between the support rod 32 and the bottom plate 1 and the support plate 2 can only change the angle, and the length of the support rod 32 cannot be changed, after the angle between the support rod 32 and the threaded sleeve 31 is changed, the distance between the connection between the support rod 32 and the bottom plate 1 and the connection between the support rod 32 and the support plate 2 will become longer, so the purpose of controlling the lifting of the support plate 2 can be achieved;

[0031] When lifting a heavy object, the gravity of the pallet 2 and the heavy object acts on the support rod 32 and the threaded sleeve 31, and because the support rod 32 has an angle, the inclination of the support rod 32 changes the direction of the gravity of the pallet 2 and the heavy object, and the gravity of the pallet 2 and the heavy object is decomposed into two components along the support rod 32 and perpendicular to the support rod 32, and the component perpendicular to the support rod 32 directly acts on the support rod 32, and because the screw rod 6 is in contact with the support rod 32, the pressure of the heavy object on the screw rod 6 is effectively reduced, thereby achieving the effect of reducing the wear rate of the screw rod 6.

[0032] In a further preferred embodiment of the present invention, Figure 1-6 As shown, a first telescopic rod 7 is disposed at the center of the upper end of the base plate 1 , and a driving motor 8 is disposed at the upper end of the first telescopic rod 7 .

[0033] In this embodiment, the drive motor 8 is provided to provide power to the transmission mechanism 5 .

[0034] In a further preferred embodiment of the present invention, Figure 1-6 As shown, the driving box 4 is fixedly mounted on the top of the driving motor 8 , and the motor shaft of the driving motor 8 extends into the interior of the driving box 4 .

[0035] In this embodiment, since the driving box 4 is fixedly installed on the top of the driving motor 8, the motor shaft can rotate inside the driving box 4.

[0036] In a further preferred embodiment of the present invention, Figure 1-6 As shown, the transmission mechanism 5 includes four interlocking bevel gears 51 and one driving bevel gear 52. The four interlocking bevel gears 51 are rotatably connected to the four inner side walls of the driving box 4 respectively. The driving bevel gear 52 is installed at the inner bottom end of the driving box 4. The driving bevel gear 52 and each of the interlocking bevel gears 51 are meshed.

[0037] In this embodiment, by arranging the driving bevel gear 52 and the four interlocking bevel gears 51 , in cooperation with the driving motor 8 , the four interlocking bevel gears 51 can be effectively driven to rotate synchronously and in the same direction.

[0038] In a further preferred embodiment of the present invention, Figure 1-6 As shown, the driving bevel gear 52 is fixedly mounted on the motor shaft of the driving motor 8 , and the four linkage bevel gears 51 are fixedly connected to the four lead screws 6 , respectively.

[0039] In this embodiment, since the four interlocking bevel gears 51 are fixedly connected to the four screw rods 6 respectively, and the four interlocking bevel gears 51 are all meshed with the driving bevel gear 52, the four screw rods 6 can be driven to rotate synchronously during the rotation of the driving motor 8, so that the four screw rods 6 simultaneously push the four groups of folding parts 3 to stretch or fold, so that the heights of the four corners of the support plate 2 are equal, and the top surface of the support plate 2 is flush, so as to achieve the effect of improving stability when lifting objects.

[0040] In a further preferred embodiment of the present invention, Figure 1-6 As shown, a support frame 9 is commonly provided at one end of the four screw rods 6 away from the drive box 4 , and a second telescopic rod 10 is provided at the bottom end of the support frame 9 at positions corresponding to the four corners of the bottom plate 1 .

[0041] In this embodiment, by configuring the support frame 9 in coordination with the four second telescopic rods 10, the axis lines of the four screw rods 6 are located in the same plane, and by configuring the second telescopic rods 10, the top surface of the support frame 9 is always parallel to the top surface of the base plate 1, thereby effectively improving the stability of the device.

[0042] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A transport and lifting mechanism for fire engineering, characterized in that: It comprises a base plate (1), a supporting plate (2) and four groups of folding members (3); a driving box (4) is arranged at the upper end of the base plate (1); a transmission mechanism (5) is arranged inside the driving box (4); and four side walls of the driving box (4) are rotatably connected to screw rods (6); The folding member (3) comprises a threaded sleeve (31), the threaded sleeve (31) being threadably matched with the screw rod (6) and sleeved on the outer surface of the screw rod (6), two support rods (32) being rotatably arranged on the circumferential side of the threaded sleeve (31), and the ends of the two support rods (32) away from the threaded sleeve (31) are rotatably connected to the corners of the bottom plate (1) and the support plate (2), respectively.

2. A transport and lifting mechanism for fire engineering according to claim 1, characterized in that: A first telescopic rod (7) is arranged at the centre of the upper end of the base plate (1), and a driving motor (8) is arranged at the upper end of the first telescopic rod (7).

3. A transport and lifting mechanism for fire engineering according to claim 2, characterized in that: The drive box (4) is fixedly mounted on the top of the drive motor (8), and the motor shaft of the drive motor (8) extends into the interior of the drive box (4).

4. A transport and lifting mechanism for fire engineering according to claim 3, characterized in that: The transmission mechanism (5) comprises four linked bevel gears (51) and a driving bevel gear (52); the four linked bevel gears (51) are rotatably connected to four inner side walls of the driving box (4), respectively; the driving bevel gear (52) is mounted on the inner bottom end of the driving box (4); the driving bevel gear (52) is meshed with each of the linked bevel gears (51).

5. A transport and lifting mechanism for fire engineering according to claim 4, characterized in that: The driving bevel gear (52) is fixedly mounted on the motor shaft of the driving motor (8), and the four linked bevel gears (51) are respectively fixedly connected to the four lead screws (6).

6. A transport and lifting mechanism for fire engineering according to claim 5, characterized in that: A support frame (9) is commonly provided at one end of the four screw rods (6) away from the drive box (4), and second telescopic rods (10) are provided at the bottom end of the support frame (9) at positions corresponding to the four corners of the bottom plate (1).

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