Lead screw lifting bearing device of subway flood gate fixing pulley block

Abstract

A lead screw lifting bearing device of a subway flood gate fixing pulley block comprises a bottom frame, a lead screw lifting mechanism, a supporting mechanism and a telescopic guide rod, the bottom frame and the supporting mechanism are oppositely arranged one above the other, the lead screw lifting mechanism is arranged between the bottom frame and the supporting mechanism, and the telescopic guide rod is arranged on the lead screw lifting mechanism. The supporting mechanism comprises a plurality of supporting legs, the lifting device lifts the subway flood gate fixing pulley block to the bearing device, the lower plate face of the subway flood gate fixing pulley block stably falls on the supporting legs, and the subway flood gate fixing pulley block can be lifted by increasing the height of the lead screw lifting mechanism. The fixing connecting plate of the subway flood gate fixing pulley block is aligned with the pre-embedded plate, the fixing connecting plate and the pre-embedded plate are fixed through the fixing piece, installation of the subway flood gate fixing pulley block is completed, and the problems that in the prior art, when a chain block is adopted, the number of needed workers is large, labor intensity is large, and working efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to the field of installation of lifting anti-flooding doors in subway tunnels, in particular to a screw rod lifting and supporting device for a fixed pulley block of a subway anti-flooding door. Background Art

[0002] Subway flood prevention doors are protective doors that prevent water from entering a local tunnel section from spreading to other tunnel sections. They are disaster prevention equipment for subways. Subway flood prevention doors control the opening and closing of door leaves by lifting and lowering the opening and closing device. The opening and closing device consists of a hoist installed on the ground and a fixed pulley block and wire rope installed on the top of the passage. In order to achieve stable and smooth opening and closing of subway flood prevention doors, it is necessary to ensure that all parts of the opening and closing device are firmly installed, especially the installation of the fixed pulley block on the top of the passage.

[0003] At present, in the lifting and flood prevention door projects in subway tunnels, the installation of the top fixed pulley block is mostly carried out by three or four sets of hand winches in combination with manual turning and adjustment. In order to meet the lifting space of the hand winch and the fixed pulley block, a lifting installation frame is specially made for the fixed pulley block, and on-site drilling is also required to install temporary lifting rings. The whole set of operation procedures is relatively cumbersome, and many tools and auxiliary equipment are used. In addition, when using hand winches, a large number of workers are required, the labor intensity is high, and the work efficiency is low. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the utility model is to propose a screw rod lifting and supporting device for a fixed pulley block of a subway flood prevention door, so as to solve the problems of a large number of workers required, high labor intensity and low work efficiency when using hand winches in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A screw rod lifting and supporting device for a fixed pulley block of a subway flood prevention door, comprising a bottom frame, a screw rod lifting mechanism, a supporting mechanism and a telescopic guide rod;

[0007] The bottom frame and the support mechanism are arranged opposite to each other, one below the other above, and the screw rod lifting mechanism is arranged between the bottom frame and the support mechanism. The support mechanism can move up and down to move away from or close to the bottom frame through the arrangement of the screw rod lifting mechanism.

[0008] The support mechanism includes a support leg frame and a plurality of support legs, the bottom of the support leg frame is connected to the screw rod lifting mechanism, the top of the support leg frame is provided with the support legs, and the support legs are used to support the lower plate surface of the subway flood prevention door fixed pulley block;

[0009] The screw rod lifting mechanism comprises a hand wheel and a screw rod, wherein the hand wheel is used to drive the screw rod to rotate, and the rotation of the screw rod drives the support mechanism to move upward away from or downward toward the bottom frame;

[0010] The telescopic guide rod is vertically arranged between the bottom frame and the supporting mechanism. The telescopic guide rod is adjustable in length in the vertical direction. The upper end of the telescopic guide rod extends upward and protrudes from the supporting mechanism, and forms a top supporting end. The lower end of the telescopic guide rod extends downward and protrudes from the bottom frame, and forms a bottom supporting end. The telescopic guide rod is used to vertically guide the supporting mechanism.

[0011] Furthermore, it also includes at least four universal support rollers, and the four universal support rollers are respectively installed at the four corners of the bottom of the bottom frame through fixing members.

[0012] Furthermore, the screw lifting mechanism also includes a lifting device body, a screw top connecting plate, a lifting device main shaft and a coupling rod. The two lifting device bodies are symmetrically mounted on the bottom frame by fixing bolts. The screw is rotatably mounted inside the lifting device body. The lifting device main shaft and the screw are in a worm gear connection form. The rotation of the lifting device main shaft drives the rotation of the screw. The two lifting device main shafts are connected by the coupling rod.

[0013] Furthermore, a first connecting seat and a first fixed pressure plate are provided on both sides of the supporting leg frame, the first fixed pressure plate is a U-shaped metal plate, and the U-shaped metal plate is provided with a first limiting groove, and the telescopic guide rod is installed through the first limiting groove.

[0014] Furthermore, a second connecting seat and a second fixed pressure plate are provided on both sides of the bottom frame, the second fixed pressure plate is a U-shaped metal plate, and the U-shaped metal plate is provided with a second limiting groove, and the telescopic guide rod is installed through the second limiting groove.

[0015] Furthermore, the telescopic guide rod comprises an upper section, a middle section and a lower section from top to bottom, the upper section of the telescopic guide rod is connected to the upper end of the middle section of the telescopic guide rod so as to be adjustable up and down through a thread setting, and the lower section of the telescopic guide rod is connected to the lower end of the middle section so as to be adjustable up and down through a thread setting.

[0016] Furthermore, a top supporting end of the upper section of the telescopic guide rod and a bottom supporting end of the lower section of the telescopic guide rod are respectively provided with supporting seats.

[0017] Furthermore, it also includes a support leg seat, and the support leg is arranged in the support leg seat so as to be telescopically movable up and down.

[0018] Furthermore, the main body of the bottom frame is a rectangular tube welding component.

[0019] Furthermore, the screw rod lifting mechanism also includes a bottom connecting seat, and the bottom connecting seat and the rectangular tube welding component are fixed by a fixing piece.

[0020] Compared with the prior art, the technical solution provided by the utility model can include the following beneficial effects:

[0021] The present application can lift the supporting device onto the scaffolding by means of a lifting device, adjust the position of the supporting mechanism so that the supporting mechanism is aligned with the embedded plate of the subway flood-proof door fixed pulley group in the vertical height direction, adjust the length of the telescopic guide rod so that the telescopic guide rod is fixed between the top of the subway passage and the scaffolding platform, and then lift the subway flood-proof door fixed pulley group onto the supporting mechanism by means of the lifting device, so that the lower plate surface of the subway flood-proof door fixed pulley group falls steadily on the supporting legs, the height of the lifting mechanism is raised, the fixed connecting plate of the subway flood-proof door fixed pulley group is aligned with the embedded plate, and then fixed, thereby completing the installation of the subway flood-proof door fixed pulley group, solving the problems of the relatively cumbersome installation process in the current lifting flood-proof door project in subway tunnels, the large number of tools and auxiliary equipment used, the large number of workers required when using hand winches, the high labor intensity, and the low work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the lower structure of an embodiment of the utility model;

[0024] Figure 3 yes Figure 2 A partial enlarged view of the middle A area;

[0025] Figure 4 It is a schematic diagram of the upper structure of an embodiment of the utility model;

[0026] Figure 5 yes Figure 4 A partial enlarged view of the middle B area;

[0027] Figure 6 It is a top view of an embodiment of the utility model;

[0028] Figure 7 It is a structural schematic diagram of a screw lifting mechanism in the utility model;

[0029] Figure 8 It is a schematic diagram of a fixed pulley block for installing a subway flood prevention door on a screw lifting mechanism in the utility model;

[0030] Among them: bottom frame 1, universal support roller 11, second connecting seat 12, second fixed pressure plate 13, second limiting groove 14, rectangular tube welding component 15, screw lifting mechanism 2, hand wheel 21, lifting device main body 22, the screw 23, screw top connecting plate 24, lifting device main shaft 25, coupling rod 26, bottom connecting seat 27, support mechanism 3, support leg frame 31, first connecting seat 311, first fixed pressure plate 312, first limiting groove 313, support leg 32, support leg seat 33, telescopic guide rod 4, support seat 41, telescopic guide rod upper section 42, telescopic guide rod middle section 40, telescopic guide rod lower section 43, fixing bolt 5, scaffolding platform 6, supporting device 7, lifting device 8 and embedded plate 9. DETAILED DESCRIPTION

[0031] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0032] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] A preferred embodiment of the present application is as follows Figures 1 to 8As shown, a screw rod lifting and supporting device 7 of a fixed pulley block for a subway flood prevention door comprises a bottom frame 1, a screw rod lifting mechanism 2, a supporting mechanism 3 and a telescopic guide rod 4;

[0036] The bottom frame 1 and the support mechanism 3 are arranged opposite to each other, one below the other, and the screw rod lifting mechanism 2 is arranged between the bottom frame 1 and the support mechanism 3. The support mechanism 3 can move up and down to move away from or close to the bottom frame 1 through the arrangement of the screw rod lifting mechanism 2.

[0037] The support mechanism 3 includes a support leg frame 31 and a plurality of support legs 32. The bottom of the support leg frame 31 is connected to the screw lifting mechanism 2. The top of the support leg frame 31 is provided with the support leg 32. The support leg 32 is used to support the lower plate surface of the subway flood prevention door fixed pulley block.

[0038] The screw rod lifting mechanism 2 includes a hand wheel 21 and a screw rod 23, wherein the hand wheel 21 is used to drive the screw rod 23 to rotate, and the rotation of the screw rod 23 drives the support mechanism 3 to move upward away from or downward toward the bottom frame 1;

[0039] The telescopic guide rod 4 is vertically arranged between the bottom frame 1 and the supporting mechanism 3. The telescopic guide rod 4 is adjustable in length in the vertical direction. The upper end of the telescopic guide rod 4 extends upward and protrudes from the supporting mechanism 3, and forms a top supporting end. The lower end of the telescopic guide rod 4 extends downward and protrudes from the bottom frame 1, and forms a bottom supporting end. The telescopic guide rod 4 is used to vertically guide the supporting mechanism 3.

[0040] Specifically, the bottom frame 1 is the bottom supporting structure of the supporting device 7, which plays the role of supporting the screw lifting mechanism 2 and the supporting mechanism 3. When the subway flood-proof door fixed pulley block is installed, the supporting device 7 is lifted to the scaffolding platform 6 by the lifting device 8, and the position of the supporting device 7 is adjusted so that the supporting device 7 is aligned with the embedded plate 9 of the subway flood-proof door fixed pulley block in the vertical height direction, and the length of the telescopic guide rod 4 is adjusted so that the upper and lower ends of the telescopic guide rod 4 are respectively against the top of the subway passage and the scaffolding platform 6, and then the subway flood-proof door is lifted by the lifting device 8. The fixed pulley block of the flood door is hoisted onto the supporting device 7, and the pulley block is arranged on the lower plate surface of the fixed pulley block of the subway flood prevention door. The lower plate surface of the fixed pulley block of the subway flood prevention door falls smoothly on the supporting leg 32. The height of the screw lifting mechanism 2 is raised by rotating the hand wheel 21, and the fixed connecting plate of the fixed pulley block of the subway flood prevention door is aligned with the embedded plate 9, and the fixed connecting plate is fixed to the embedded plate 9 by the fixing bolts 5, so as to complete the installation of the fixed pulley block of the subway flood prevention door, and solve the problems of a large number of workers, high labor intensity and low work efficiency when using hand winches in the prior art.

[0041] In an optional embodiment, at least four universal support rollers 11 are further included. The four universal support rollers 11 are respectively installed at four corners of the bottom of the bottom frame 1 through fixing members.

[0042] Specifically, by moving the universal support roller 11, the supporting device 7 can be freely moved on the scaffolding platform 6, and the position of the supporting device 7 can be easily adjusted to reduce the construction difficulty. In addition, the universal support roller 11 has a built-in brake fixing device to improve the overall stability of the supporting device 7.

[0043] In an optional embodiment, the screw lifting mechanism 2 also includes a lifting device body 22, a screw top connecting plate 24, a lifting device main shaft 25 and a coupling rod 26. The two lifting device bodies 22 are symmetrically mounted on the bottom frame 1 by fixing bolts, and the screw 23 is rotatably mounted inside the lifting device body 22. The lifting device main shaft 25 and the screw 23 are in a worm gear connection form. The rotation of the lifting device main shaft 25 drives the rotation of the screw 23. The two lifting device main shafts 25 are connected by the coupling rod 26. When one of the handwheels 21 is rotated, the two lifting device bodies 22 are lifted and lowered synchronously.

[0044] In an optional embodiment, a first connecting seat 311 and a first fixed pressure plate 312 are provided on both sides of the supporting leg frame 31, the first fixed pressure plate 312 is a U-shaped metal plate, and the U-shaped metal plate is provided with a first limiting groove 313, and the telescopic guide rod 4 is installed through the first limiting groove 313.

[0045] In an optional embodiment, a second connecting seat 12 and a second fixed pressure plate 13 are provided on both sides of the bottom frame 1, the second fixed pressure plate 13 is a U-shaped metal plate, and the U-shaped metal plate is provided with a second limiting groove 14, and the telescopic guide rod 4 is installed through the second limiting groove 14.

[0046] Specifically, the first limiting groove 313 and the second limiting groove 14 are located at the same position in the vertical direction.

[0047] In an optional embodiment, the telescopic guide rod includes an upper section, a middle section and a lower section from top to bottom, the upper section 42 of the telescopic guide rod is connected to the upper end of the middle section 40 of the telescopic guide rod so as to be adjustable up and down through a thread setting, and the lower section 43 of the telescopic guide rod is connected to the lower end of the middle section 40 so as to be adjustable up and down through a thread setting.

[0048] Specifically, by increasing the screw length of the lower section 43 of the telescopic guide rod, the lower section 43 of the telescopic guide rod is pressed against the scaffolding platform 6, and by increasing the screw length of the upper section 42 of the telescopic guide rod, the upper section 42 of the telescopic guide rod is pressed against the top of the subway passage. The telescopic guide rod 4 can be fixed between the scaffolding platform 6 and the top of the subway passage. The telescopic guide rod 4 improves the overall stability of the supporting device 7 when supporting the fixed pulley group of the subway flood prevention door to lift upward.

[0049] In an optional embodiment, a top supporting end of the telescopic guide rod upper section 42 and a bottom supporting end of the telescopic guide rod lower section 43 are respectively provided with a supporting seat 41 .

[0050] Specifically, the support seat 41 at the bottom can increase the contact area between the telescopic guide rod 4 and the scaffolding platform 6, and the support seat 41 at the top can increase the contact area between the telescopic guide rod 4 and the top of the subway passage, thereby improving the overall stability of the supporting device 7 when supporting the fixed pulley group of the subway flood prevention door to be lifted upward.

[0051] In an optional embodiment, a support leg seat 33 is further included, and the support leg 32 is telescopically disposed in the support leg seat 33.

[0052] Specifically, the support legs 32 can not only support the fixed pulley block of the subway flood prevention door, but also compensate for the height.

[0053] In an optional embodiment, the main body of the bottom frame 1 is a rectangular tube welding component 15 .

[0054] Specifically, the rectangular tube welding component 15 can reduce the weight of the supporting device 7 and facilitate transportation. The universal support roller 11 is installed at the bottom of the rectangular tube welding component 15.

[0055] In an optional embodiment, the screw lifting mechanism 2 further includes a bottom connecting seat 27, and the bottom connecting seat 27 is fixed to the rectangular tube welding component 15 via a fixing piece.

[0056] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A screw rod lifting and supporting device (7) for a fixed pulley block of a subway flood prevention door, characterized in that: It comprises a bottom frame (1), a screw rod lifting mechanism (2), a supporting mechanism (3) and a telescopic guide rod (4); The bottom frame (1) and the support mechanism (3) are arranged opposite to each other, one above the other, and the screw rod lifting mechanism (2) is arranged between the bottom frame (1) and the support mechanism (3). The support mechanism (3) can move up and down to move away from or close to the bottom frame (1) through the arrangement of the screw rod lifting mechanism (2); The support mechanism (3) comprises a support leg frame (31) and a plurality of support legs (32); the bottom of the support leg frame (31) is connected to the screw rod lifting mechanism (2); the top of the support leg frame (31) is provided with the support leg (32); the support leg (32) is used to support the lower plate surface of the subway flood prevention door fixed pulley block; The screw rod lifting mechanism (2) comprises a hand wheel (21) and a screw rod (23), wherein the hand wheel (21) is used to drive the screw rod (23) to rotate, and the rotation of the screw rod (23) drives the support mechanism (3) to move upward away from or downward toward the bottom frame (1); A telescopic guide rod (4) is vertically arranged between the bottom frame (1) and the support mechanism (3). The telescopic guide rod (4) is telescopically adjustable in length in the vertical direction. The upper end of the telescopic guide rod (4) extends upward and protrudes from the support mechanism (3) and forms a top support end. The lower end of the telescopic guide rod (4) extends downward and protrudes from the bottom frame (1) and forms a bottom support end. The telescopic guide rod (4) is used to vertically guide the support mechanism (3).

2. The screw rod lifting and supporting device (7) of the subway flood prevention door fixed pulley block according to claim 1, characterized in that: It also comprises at least four universal support rollers (11), wherein the four universal support rollers (11) are respectively mounted at four corners of the bottom of the bottom frame (1) via fixing members.

3. The screw rod lifting and supporting device (7) of the subway flood prevention door fixed pulley block according to claim 1, characterized in that: The screw lifting mechanism (2) also includes a lifting device body (22), a screw top connecting plate (24), a lifting device main shaft (25) and a coupling rod (26); the two lifting device bodies (22) are symmetrically mounted on the bottom frame (1) by fixing bolts; the screw (23) is rotatably mounted inside the lifting device body (22); the lifting device main shaft (25) and the screw (23) are in the form of a worm gear connection; the rotation of the lifting device main shaft (25) drives the rotation of the screw (23); and the two lifting device main shafts (25) are connected by the coupling rod (26).

4. The screw rod lifting and supporting device (7) of the subway flood prevention door fixed pulley block according to claim 1, characterized in that: A first connecting seat (311) and a first fixed pressing plate (312) are provided on both sides of the supporting leg frame (31); the first fixed pressing plate (312) is a U-shaped metal plate, and the U-shaped metal plate is provided with a first limiting groove (313); the telescopic guide rod (4) is installed through the first limiting groove (313).

5. The screw rod lifting and supporting device (7) of the subway flood prevention door fixed pulley block according to claim 1, characterized in that: A second connecting seat (12) and a second fixed pressing plate (13) are provided on both sides of the bottom frame (1); the second fixed pressing plate (13) is a U-shaped metal plate, and the U-shaped metal plate is provided with a second limiting groove (14); the telescopic guide rod (4) is installed through the second limiting groove (14).

6. The screw rod lifting and supporting device for the fixed pulley block of a subway flood prevention door according to claim 1, characterized in that: The telescopic guide rod comprises an upper section, a middle section and a lower section from top to bottom, wherein the upper section (42) of the telescopic guide rod is connected to the upper end of the middle section (40) of the telescopic guide rod in an adjustable manner up and down through a threaded arrangement, and the lower section (43) of the telescopic guide rod is connected to the lower end of the middle section (40) in an adjustable manner up and down through a threaded arrangement.

7. The screw rod lifting and supporting device for the fixed pulley block of a subway flood prevention door according to claim 6, characterized in that: A support seat (41) is provided at the top support end of the telescopic guide rod upper section (42) and the bottom support end of the telescopic guide rod lower section (43), respectively.

8. The screw rod lifting and supporting device (7) of the subway flood prevention door fixed pulley block according to claim 1, characterized in that: It also comprises a support leg seat (33), and the support leg (32) is arranged in the support leg seat (33) in a telescopic manner up and down.

9. The screw rod lifting and supporting device (7) of the subway flood prevention door fixed pulley block according to claim 2, characterized in that: The main body of the bottom frame (1) is a rectangular tube welding component (15).

10. The screw rod lifting and supporting device (7) of the subway flood prevention door fixed pulley block according to claim 9, characterized in that: The screw rod lifting mechanism (2) also includes a bottom connecting seat (27), and the bottom connecting seat (27) is fixed to the rectangular tube welding component (15) via a fixing piece.

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