Simple hoisting platform for circular air pipe

Abstract

The utility model discloses a simple hoisting platform for a circular air duct, which comprises a bottom plate, folding brackets are mounted at the top of the bottom plate, two folding brackets are symmetrically arranged relative to the vertical axis of the bottom plate, and the tops of the two folding brackets are respectively connected with two ends of the bottom of a lifting platform; cylinders are mounted at the top of the bottom plate, and the two cylinders are symmetrically arranged relative to the vertical axis of the bottom plate; the two air cylinders are connected with the two push rods correspondingly, and the two push rods are installed at the two ends between the two folding supports correspondingly. Clamping blocks are arranged at the top of the lifting table, and the three clamping blocks are arranged at equal angles relative to the vertical axis of the lifting table; according to the clamping device, the motor is started, the driving wheel and the three meshing wheels are matched, the three lead screws can be driven to rotate at the same time, then the three clamping blocks are driven to slide along the sliding grooves at the same time, round air pipes with different diameters can be rapidly matched and clamped, and use convenience is improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field related to air duct installation, in particular to a simple hoisting platform for a circular air duct. Background Art

[0002] As an important medium for conveying hot and cold air flows, air ducts are an indispensable and important part of ventilation, heating and air conditioning systems, and are also an important part of smoke prevention, smoke exhaust, dust removal and other projects. However, the pursuit of full utilization of space in buildings has made the pipeline space for mechanical and electrical installations increasingly compressed, resulting in an increase in the difficulty of pipeline installation. Therefore, when installing air ducts, it is necessary to use a suitable lifting platform. Reference publication number: "CN202594653U", the disclosed "a lifting platform", includes a base, joint columns, beams, hydraulic cylinders and lifting devices, the base is symmetrically arranged; the columns are vertically arranged on the base; the beams are transversely fixedly connected to the tops of the columns; the hydraulic cylinders are vertically arranged on the base and drive the joint columns to extend and retract up and down; the lifting device is connected to the beams and moves left and right along the beams. The lifting platform can be freely raised and lowered, extended and retracted, freely moved and freely disassembled, saving a lot of manpower.

[0003] The hoisting platform currently in use usually adopts a horizontally set platform to place the air duct, and a fixed slider is usually used to limit the bottom of the air duct when fixing the air duct. However, due to the high height of the air duct, the air duct is prone to position deviation due to external force during the hoisting process, and the slider at the bottom provides limited support for the side wall of the air duct. There is a lack of auxiliary return measures after the air duct is offset, which can easily affect the installation efficiency and quality, and is therefore inconvenient in use. Utility Model Content

[0004] The purpose of the utility model is to provide a simple hoisting platform for a circular air duct, so as to solve the problem raised in the above background technology that the currently used hoisting platform usually adopts a horizontally arranged platform to place the air duct, and when fixing the air duct, a fixed slider is usually used to limit the bottom of the air duct, and since the height of the air duct is relatively high, the air duct is prone to position deviation due to external force during the hoisting process, and the slider at the bottom provides limited support for the side wall of the air duct, and there is a lack of auxiliary return measures after the air duct is offset, which easily affects the installation efficiency and installation quality, and therefore there is inconvenience in use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A simple hoisting platform for a circular air duct comprises a base plate, a folding bracket is installed on the top of the base plate, and two folding brackets are symmetrically arranged about the vertical axis of the base plate, and the tops of the two folding brackets are respectively connected to the two ends of the bottom of the lifting platform; a cylinder is installed on the top of the base plate, and two cylinders are symmetrically arranged about the vertical axis of the base plate; the two cylinders are respectively connected to two push rods, and the two push rods are respectively installed at the two ends between the two folding brackets; a clamping block is provided on the top of the lifting platform, and three clamping blocks are arranged at equal angles about the vertical axis of the lifting platform; each The bottom of the clamping block is respectively penetrated by a slide groove and connected to a screw rod, and each screw rod is installed inside the lifting platform; the end of each screw rod close to the vertical axis of the lifting platform is penetrated by the inner shell and connected to a meshing wheel; a motor is installed at the bottom of the lifting platform, and the output shaft of the motor is connected to the driving wheel; a bracket is installed at the top of each clamping block, and a support rod is installed at the end of each bracket; a pressure rod is installed at the top of each support rod, and the bottom of each support rod is connected to a group of spring sheets; each group of spring sheets is respectively installed on the outer wall of the clamping block.

[0007] As a further solution of the utility model: two pads are respectively installed at the two ends of the top of the base plate, and the two pads are symmetrically distributed about the vertical axis of the base plate, and the two pads are respectively arranged under the two folding brackets; two groups of lifting ears are respectively installed on both sides of the base plate, and each group of lifting ears is symmetrically provided with two about the vertical axis of the base plate.

[0008] As a further solution of the utility model: the connection mode between the cylinder and the base plate is a rotational connection, and the cylinder cooperates with the push rod, the folding bracket and the lifting platform to form a lifting structure, and the axis line of the base plate and the axis line of the lifting platform are on the same vertical line.

[0009] As a further solution of the utility model: the connection mode between the clamping block and the slide groove is a sliding connection, and the length of the matching slide groove and the slide groove is smaller than the radius of the lifting platform, and the clamping block, the slide groove and the screw rod form a sliding structure.

[0010] As a further solution of the utility model: the connection mode between the bracket and the support rod is a rotation connection, and the connection mode between the support rod and the pressure rod is a rotation connection, and at the same time the support rod cooperates with the spring sheet and the pressure rod to form a rotation structure; each group of the spring sheets is provided with three at equal intervals.

[0011] As a further solution of the utility model: the axis of the driving wheel, the axis of the inner shell and the axis of the lifting platform are all on the same vertical line, and the driving wheel is meshed and connected with the three meshing wheels at the same time.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a lifting platform, a folding bracket, a cushion block and a cylinder. By starting the two cylinders and pushing the push rods on both sides at the same time, the two folding brackets can be pushed to extend upward at the same time, thereby pushing the lifting platform to be lifted as a whole. After the installation is completed, by starting the cylinder again, the lifting platform can be driven to quickly descend and then quickly detach from the bottom of the air duct after the fixed installation is completed, so that the entire lifting platform can be quickly removed after the installation is completed, thereby improving the convenience of use.

[0014] 2. The utility model is provided with a clamping block, which can drive the three screw rods to rotate simultaneously by starting the motor, cooperating with the driving wheel and the three meshing wheels, and then drive the three clamping blocks to slide along the slide groove at the same time, so as to quickly adapt to and clamp circular air ducts of different diameters, thereby improving the convenience of use.

[0015] 3. The utility model is provided with a bracket, a support rod, a pressure rod and a spring sheet. The clamping block will drive the support rod and the pressure rod to move synchronously while sliding. The spring sheet always gives a thrust to the connected support rod through its own elastic force, thereby pushing the end of the support rod and the correspondingly installed pressure rod to fit tightly against the side wall of the air duct, thereby improving the stability of the air duct after it is fixed. At the same time, when the air duct is offset by lateral pressure, the spring sheet can absorb the vibration through its own deformation, and cooperate with the support rod and the pressure rod to assist the air duct to quickly return to its original position through rebound, thereby improving safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the lifting platform in the utility model.

[0018] Figure 3 It is a plan view of the structure of the lifting platform in the utility model.

[0019] Figure 4 This utility model Figure 3 Side view of.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the screw rod in the utility model.

[0021] Figure 6 This utility model Figure 5 Magnified view of point A in .

[0022] In the figure: 1-base plate, 2-lifting platform, 3-folding bracket, 4-pad, 5-cylinder, 6-push rod, 7-clamp block, 8-slideway, 9-screw rod, 10-inner shell, 11-meshing wheel, 12-driving wheel, 13-bracket, 14-support rod, 15-pressure rod, 16-spring sheet, 17-lifting ear, 18-motor. DETAILED DESCRIPTION

[0023] 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 in 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.

[0024] See also Figure 1-6 In the embodiment of the utility model, the simple hoisting platform of the circular air duct includes a bottom plate 1, a folding bracket 3 is installed on the top of the bottom plate 1, and two folding brackets 3 are symmetrically arranged about the vertical axis of the bottom plate 1, and the tops of the two folding brackets 3 are respectively connected to the two ends of the bottom of the lifting platform 2; a cylinder 5 is installed on the top of the bottom plate 1, and two cylinders 5 are symmetrically arranged about the vertical axis of the bottom plate 1; the two cylinders 5 are respectively connected to two push rods 6, and the two push rods 6 are respectively installed at the two ends between the two folding brackets 3; a clamping block 7 is provided on the top of the lifting platform 2, and three clamping blocks 7 are arranged at equal angles about the vertical axis of the lifting platform 2; each of the clamping blocks A slide groove 8 is passed through the bottom of the block 7 and is connected to a screw rod 9, and each screw rod 9 is installed inside the lifting platform 2; the end of each screw rod 9 close to the vertical axis of the lifting platform 2 passes through the inner shell 10 and is connected to a meshing wheel 11; a motor 18 is installed at the bottom of the lifting platform 2, and the output shaft of the motor 18 is connected to the driving wheel 12; a bracket 13 is installed at the top of each clamping block 7, and a support rod 14 is installed at the end of each bracket 13; a pressure rod 15 is installed at the top of each support rod 14, and the bottom of each support rod 14 is connected to a group of spring sheets 16; each group of spring sheets 16 is installed on the outer wall of the clamping block 7.

[0025] More specifically, the top area of ​​the lifting platform 2 is smaller than the top area of ​​the base plate 1 .

[0026] As a further illustration of this embodiment, the driving wheel 12 is driven to rotate by the motor 18 .

[0027] In this embodiment, two pads 4 are respectively installed at the two ends of the top of the base plate 1, and the two pads 4 are symmetrically distributed about the vertical axis of the base plate 1, and the two pads 4 are respectively arranged under the two folding brackets 3; two groups of lifting ears 17 are respectively installed on both sides of the base plate 1, and each group of lifting ears 17 is symmetrically provided with two about the vertical axis of the base plate 1.

[0028] More specifically, the cushion block 4 is made of rubber, so as to provide a buffer and support effect to both ends of the bottom of the lifting platform 2 when the lifting platform 2 descends, thereby preventing the lifting platform 2 from descending excessively and squeezing the cylinder 5.

[0029] As a further illustration of this embodiment, the cable of the lifting device is connected via four symmetrically arranged lifting ears 17 .

[0030] In this embodiment, the connection between the cylinder 5 and the base plate 1 is a rotational connection, and the cylinder 5 cooperates with the push rod 6, the folding bracket 3 and the lifting platform 2 to form a lifting structure, and the axis line of the base plate 1 and the axis line of the lifting platform 2 are on the same vertical line.

[0031] Specifically, the corresponding folding bracket 3 is pushed by the cylinder 5 to start to extend, thereby pushing the lifting platform 2 to start to rise.

[0032] As a further illustration of this embodiment, the bottom plate 1 and the lifting platform 2 are coaxially distributed, which can help maintain the center of gravity of the whole stable when in use.

[0033] In this embodiment, the connection mode between the clamp block 7 and the slide groove 8 is a sliding connection, and the length of the matching slide groove 8 is less than the radius of the lifting platform 2. At the same time, the clamp block 7 cooperates with the slide groove 8 and the screw rod 9 to form a sliding structure.

[0034] More specifically, the inner end surface of the clamping block 7 is provided with a plurality of strip-shaped grooves, which can improve the friction force of the inner end surface of the clamping block 7.

[0035] As a further description of this embodiment, the bottom outer wall of the air duct is clamped by a clamping block 7.

[0036] In this embodiment, the connection mode between the bracket 13 and the support rod 14 is a rotational connection, and the connection mode between the support rod 14 and the pressure rod 15 is a rotational connection. At the same time, the support rod 14 cooperates with the spring sheet 16 and the pressure rod 15 to form a rotating structure; each group of spring sheets 16 is provided with three at equal intervals.

[0037] Specifically, the bracket 13 and the clamping block 7 are fixedly connected by bolts, and the angle of the bracket 13 can be adjusted by adjusting the connecting bolts, thereby adjusting the initial angle of the corresponding support rod 14.

[0038] As a further explanation of this embodiment, the spring sheet 16 always applies a pressure to the corresponding support rod 14, thereby pushing the support rod 14 to rotate, so that the pressure rod 15 presses the side wall of the air duct.

[0039] In this embodiment, the axis of the driving wheel 12 , the axis of the inner shell 10 and the axis of the lifting platform 2 are all on the same vertical line, and the driving wheel 12 is meshed and connected with the three meshing wheels 11 at the same time.

[0040] More specifically, the rotation of the driving wheel 12 drives the meshing wheel 11 and the corresponding screw rod 9 to rotate synchronously.

[0041] As a further description of this embodiment, the meshing wheel 11 is a cylindrical structure, and the edge of the meshing wheel 11 is a tooth structure.

[0042] The working principle of the utility model is as follows: when in use, firstly, the air duct to be installed is placed on the top of the lifting platform 2 by suspension, then the external power supply is turned on, the motor 18 is started, and the driving wheel 12 is cooperated to drive the three meshing wheels 11 and the corresponding screw rods 9 to start rotating at the same time. While rotating, the screw rods 9 drive the corresponding clamping blocks 7 to slide synchronously along the slide groove 8 toward the direction of the air duct until the inner end faces of the three clamping blocks 7 are all tightly against the outer wall of the air duct, and the three pressure rods 15 are synchronously tightly against the outer wall of the air duct. At this time, the air duct is fixed, and then the external power supply is turned on, and the two cylinders 5 are started at the same time, and the two push rods 6 are cooperated to push the two folding brackets 3 to start extending upward, thereby pushing the lifting platform 2 to start rising, and finally the bottom plate 1 is connected to the lifting device through the four lifting ears 17.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Simple hoisting platform for circular air duct, characterized by: The invention comprises a bottom plate (1), wherein a folding bracket (3) is installed on the top of the bottom plate (1), and two folding brackets (3) are symmetrically arranged about the vertical axis of the bottom plate (1), and the tops of the two folding brackets (3) are respectively connected to the two ends of the bottom of the lifting platform (2); a cylinder (5) is installed on the top of the bottom plate (1), and two cylinders (5) are symmetrically arranged about the vertical axis of the bottom plate (1); the two cylinders (5) are respectively connected to two push rods (6), and the two push rods (6) are respectively installed at the two ends between the two folding brackets (3); a clamping block (7) is provided on the top of the lifting platform (2), and three clamping blocks (7) are arranged at equal angles about the vertical axis of the lifting platform (2); a slide groove (8) is respectively passed through the bottom of each clamping block (7); ) is connected to a screw rod (9), and each screw rod (9) is installed inside the lifting platform (2); the end of each screw rod (9) close to the vertical axis of the lifting platform (2) passes through the inner shell (10) and is connected to a meshing wheel (11); a motor (18) is installed at the bottom of the lifting platform (2), and the output shaft of the motor (18) is connected to the driving wheel (12); a bracket (13) is installed at the top of each clamping block (7), and a support rod (14) is installed at the end of each bracket (13); a pressure rod (15) is installed at the top of each support rod (14), and the bottom of each support rod (14) is connected to a group of spring sheets (16); each group of spring sheets (16) is respectively installed on the outer wall of the clamping block (7).

2. The simplified hoisting platform for circular air duct according to claim 1 is characterized in that: Two pads (4) are respectively installed at the two ends of the top of the base plate (1), and the two pads (4) are symmetrically distributed about the vertical axis of the base plate (1), and the two pads (4) are respectively arranged under the two folding brackets (3); two groups of lifting ears (17) are respectively installed on both sides of the base plate (1), and each group of lifting ears (17) is symmetrically arranged with two about the vertical axis of the base plate (1).

3. The simplified hoisting platform for circular air duct according to claim 1 is characterized in that: The cylinder (5) is connected to the base plate (1) in a rotational manner, and the cylinder (5) cooperates with the push rod (6), the folding bracket (3) and the lifting platform (2) to form a lifting structure, and the axis center line of the base plate (1) and the axis center line of the lifting platform (2) are on the same vertical line.

4. The simplified hoisting platform for circular air duct according to claim 1 is characterized in that: The connection mode between the clamping block (7) and the slide groove (8) is a sliding connection, and the length of the matching slide groove (8) and the slide groove (8) is less than the radius of the lifting platform (2). At the same time, the clamping block (7) cooperates with the slide groove (8) and the screw rod (9) to form a sliding structure.

5. The simplified hoisting platform for circular air duct according to claim 1 is characterized in that: The support (13) and the support rod (14) are connected in a rotational manner, and the support rod (14) and the pressure rod (15) are connected in a rotational manner. At the same time, the support rod (14) cooperates with the spring sheet (16) and the pressure rod (15) to form a rotation structure; each group of the spring sheets (16) is provided with three at equal intervals.

6. The simplified hoisting platform for circular air duct according to claim 1 is characterized in that: The axis center line of the driving wheel (12), the axis center line of the inner shell (10) and the axis center line of the lifting platform (2) are all on the same vertical straight line, and the driving wheel (12) is meshed and connected with the three meshing wheels (11) at the same time.

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