Prefabricated box girder electric telescopic steam curing shed

Abstract

The utility model discloses an electric telescopic steam curing shed with prefabricated box girders. The electric telescopic steam curing shed comprises a mounting frame; the telescopic curing shed body is arranged on the mounting frame, the head of the telescopic curing shed body is fixed to the corresponding end of the top of the mounting frame, and the tail can slide on the mounting frame; the walking mechanism is installed at the tail of the telescopic health maintenance shed body in a matched mode and can move on the top of the installation frame, and automatic unfolding and folding of the telescopic health maintenance shed body are achieved; the walking mechanism comprises a machine shell, a walking mechanism and a driving mechanism, the auxiliary wheel and the driving wheel are installed in the machine shell and installed on the top of the installation frame. The driving assembly is arranged on the outer wall of the machine shell, and an output shaft of the driving assembly is matched and connected with the driving wheel spindle. The control box is arranged on the outer wall of the machine shell, a switch is installed on the control box, and meanwhile the control box is connected with the start-stop control part of the driving assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of steam curing equipment for precast box girders, and in particular to an electric telescopic steam curing shed for precast box girders. Background Technology

[0002] Precast box girders are precast components mainly used in bridge engineering. They are produced in precast plants or on-site by pouring concrete into beams with box-shaped cross sections, and then transported to the bridge construction site for installation and connection.

[0003] Precast box girders require steam curing. Currently, most precast box girder steam curing uses fixed, non-retractable curing sheds, which are lifted using gantry cranes. This requires manual assistance from construction workers, posing high safety risks and increasing the risk of collisions with the girder, affecting its appearance. Therefore, retractable curing sheds have been developed. However, current retractable curing sheds are mostly opened and closed manually, with low automation. They require multiple workers to operate, making them extremely inconvenient and impacting the overall construction efficiency of the box girder precast yard. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an electric telescopic steam curing shed for prefabricated box girders.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A precast box girder electrically retractable steam curing shed, comprising:

[0007] Mounting rack;

[0008] The telescopic health shed body is set on the mounting frame, with its head fixed to the corresponding end of the top of the mounting frame and its tail able to slide on the mounting frame.

[0009] The walking mechanism is installed at the rear of the telescopic health shed body and can move on the top of the mounting frame, realizing the automatic unfolding and folding of the telescopic health shed body.

[0010] The walking mechanism includes:

[0011] chassis;

[0012] The auxiliary wheels and drive wheels are installed inside the housing and mounted on top of the mounting bracket;

[0013] The drive assembly is mounted on the outer wall of the housing, and its output shaft is connected to the main shaft of the drive wheel.

[0014] The control box is located on the outer wall of the housing and has a switch installed on it. It is also connected to the start / stop control part of the drive assembly.

[0015] The mounting bracket includes:

[0016] Two parallel beams are placed on the ground at their bottoms via supports;

[0017] The slide rail is mounted on the crossbeam;

[0018] The telescopic health shed has a rear end that can slide on a slide rail; a walking mechanism is installed on the slide rail; and auxiliary wheels and drive wheels are installed on the slide rail.

[0019] The retractable health shed body includes:

[0020] Two fixed rods are vertically fixed to one end of the upper part of the two crossbeams respectively;

[0021] Several sliding rods are sequentially mounted on the slide rail at their bottoms;

[0022] Several tarpaulin support frames are set on the upper part of the crossbeam. The first tarpaulin support frame is fixedly installed at both ends on the top of two fixed rods, and the two ends of the remaining support frames are installed at the top of the corresponding sliding rods.

[0023] The fixed rod and the sliding rod, as well as adjacent sliding rods, are all connected by telescopic scissor frames.

[0024] The fixed rod and the sliding rod are both provided with a crossbar on one side of their upper part, and a rod is provided on the same side of their lower part through a sliding sleeve. The crossbar and the rod are used to connect with the corresponding ends of the telescopic scissor frame.

[0025] The bottom of the sliding rod is mounted on the slide rail via a sliding limiting mechanism;

[0026] The sliding limiting mechanism includes:

[0027] A horizontally positioned pad is located at the bottom of the sliding rod;

[0028] Two side panels are vertically installed on both sides of the bottom of the pad.

[0029] A horizontally positioned pivot is mounted on two side plates at each end;

[0030] The pulley is mounted on the rotating shaft via bearings.

[0031] Two anti-tilt bolts are installed on the bottom sidewalls of the two side plates respectively, so that the two side plates can be stably limited on the slide rail.

[0032] The driving component includes:

[0033] Drive motor:

[0034] The gearbox has its power input shaft connected to the main shaft of the drive motor, and its power output shaft connected to the main shaft of the drive wheel.

[0035] The beneficial effects of this utility model are:

[0036] 1. In this utility model, the support is fixed to the ground and located at one end of the precast platform. During the pouring process, the curing shed is in a closed state to avoid affecting the concrete pouring. After the pouring is completed, it can be opened electrically, avoiding the factors that may be caused by the traditional curing shed requiring gantry crane hoisting. At the same time, it saves a lot of space in the precast plant.

[0037] 2. The telescopic scissor frame in this utility model is electrically operated, and only one person is needed to complete the opening and closing, which avoids the need for multiple people to cooperate in the opening and closing of traditional telescopic health sheds, thus improving health efficiency.

[0038] 3. This utility model has a lightweight structure and is easy to operate. It only requires one operator and the operator can use it without any training. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of this utility model;

[0040] Figure 2 This is a connection diagram of the telescopic scissor lift of this utility model;

[0041] Figure 3 This is a diagram showing the connection relationship between the rod and crossbar and the fixed rod of this utility model;

[0042] Figure 4 This is a diagram showing the connection relationship between the rod, crossbar, and sliding rod of this utility model;

[0043] Figure 5 This is a schematic diagram of the walking mechanism of this utility model;

[0044] Figure 6 This is a schematic diagram of the sliding limiting mechanism of this utility model;

[0045] Reference numerals in the attached drawings: 1-Bracket; 2-Crossbeam; 3-Slide rail; 4-Fixed rod; 5-Sliding rod; 6-Telescopic scissor frame; 7-Tantar cloth support frame; 8-Walking mechanism; 9-Sliding limit mechanism; 10-Rod; 11-Crossbar; 12-Sliding sleeve; 801-Auxiliary wheel; 802-Drive wheel; 803-Drive motor; 804-Gearbox; 805-Control box; 806-Housing; 807-Switch; 901-Pad; 902-Side plate; 903-Shaft; 904-Anti-tilt bolt; 905-Pulley; 906-Bearing. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0047] like Figures 1 to 6As shown, a precast box girder electric telescopic steam curing shed includes: a mounting frame; a telescopic curing shed body, mounted on the mounting frame, with its head fixed to the corresponding end of the top of the mounting frame and its tail able to slide on the mounting frame; a walking mechanism 8, installed at the tail of the telescopic curing shed body and movable on the top of the mounting frame, realizing the automatic unfolding and folding of the telescopic curing shed body; wherein, the walking mechanism 8 includes: a housing 806; auxiliary wheels 801 and drive wheels 802, installed inside the housing 806 and on the top of the mounting frame; a drive assembly, located on the outer wall of the housing 806, with its output shaft connected to the main shaft of the drive wheel 802; and a control box 805, located on the outer wall of the housing 806, on which a switch 807 is installed, and which is connected to the start / stop control part of the drive assembly. The mounting frame includes: two parallel crossbeams 2, with their bottoms resting on the ground via brackets 1; a slide rail 3 mounted on the crossbeams 2; the rear of the telescopic health shed body can slide on the slide rail 3; a walking mechanism 8 is mounted on the slide rail 3; and auxiliary wheels 801 and drive wheels 802 are mounted on the slide rail 3. The telescopic health shed body includes: two fixed rods 4, each vertically fixed to one end of the upper part of the two crossbeams 2; several sliding rods 5, with their bottoms slidably mounted on the slide rail 3; and several tarpaulin support frames 7, mounted on the upper part of the crossbeams 2, wherein the first tarpaulin support frame 7 is fixedly mounted at both ends to the tops of the two fixed rods 4, and the remaining support frames 7 are mounted at both ends to the tops of the corresponding sliding rods 5; wherein the fixed rods 4 and sliding rods 5, as well as adjacent sliding rods 5, are connected by telescopic scissor frames 6. The fixed rod 4 and the sliding rod 5 each have a crossbar 11 on one side of their upper part and a rod 10 on the same side of their lower part via a sliding sleeve 12. The crossbar 11 and the rod 10 are used to connect to the corresponding ends of the telescopic scissor frame 6. The bottom of the sliding rod 5 is mounted on the slide rail 3 via a sliding limiting mechanism 9. The sliding limiting mechanism 9 includes: a horizontally arranged pad 901 at the bottom of the sliding rod 5; two side plates 902 vertically arranged on both sides of the bottom of the pad 901; a horizontally arranged rotating shaft 903 with its two ends respectively mounted on the two side plates 902; a pulley 905 mounted on the rotating shaft 903 via a bearing 906; and two anti-tilting bolts 904 respectively mounted on the bottom sidewalls of the two side plates 902, so that the two side plates 902 can be stably limited on the slide rail 3. The drive assembly includes: a drive motor 803; and a gearbox 804, whose power input shaft is connected to the main shaft of the drive motor 803 and whose power output shaft is connected to the main shaft of the drive wheel 802.

[0048] A slide rail 3, a fixed rod 4, and a sliding rod 5 that slides along the slide rail 3 are fixed to the crossbeam 2. A telescopic scissor frame 6 is provided between the fixed rod 4 and the sliding rod 5. The telescopic scissor frame 6 moves back and forth on the slide rail 3 with the traveling mechanism 8, causing the sliding rod 5 to slide on the slide rail 3, thus realizing the telescopic scissor frame 6 reciprocating. The bottom of the fixed rod 4 is welded and fixed to one end of the crossbeam 2, and the top is welded and fixed to a tarpaulin support frame 7. The sliding rod 5 moves on the slide rail 3 through a sliding limit mechanism 9, which prevents the sliding rod 5 from tilting to the side; the number of sliding rods 5 on both sides of the crossbeam 2 is the same.

[0049] Among them: support 1 is fixed to the ground of the box girder prefabrication yard by bolts; crossbeam 2 is welded and fixed to support 1; slide rail 3 is welded and fixed to crossbeam 2; support 1 and crossbeam 2 are both hot-rolled H-beams of type 200×100; slide rail 3 is φ30 plain round steel bar.

[0050] The fixed rod 4 is welded to the crossbeam 2; both the fixed rod 4 and the sliding rod 5 are made of steel pipes with a length of 65cm and a diameter of 3×55.

[0051] The telescopic scissor lift 6 is rotatably connected to the fixed rod 4 and the sliding rod 5 at the top via a crossbar 11, and at the bottom via a rod 10 on the sliding sleeve 12; the crossbar 11 is welded and fixed to the fixed rod 4 and the sliding rod 5. The rod 10 is welded and fixed to the sliding sleeve 12. Limit bolts are welded and fixed to the ends of the crossbar 11 and the rod 10.

[0052] The telescopic scissor frame 6 has a support shaft in the middle and at the free end of each member, which allows the members to be rotatably connected.

[0053] Both the fixed rod 4 and the sliding rod 5 are equipped with sliding sleeves 12 at their vertical bottoms. The sliding sleeves 12 can slide on the fixed rod 4 and the sliding rod 5. The sliding sleeves 12 are made of De59×3 steel pipes.

[0054] The sliding rod 5 is welded and fixed to the sliding limit mechanism 9; the sliding limit mechanism 9 consists of a pad 901, side plates 902 welded and fixed on both sides of the pad 901, a rotating shaft 903 fixed through the side plates 902, and anti-tilting bolts 904 fixed through the side plates 902 respectively. A pulley 905 is provided on the rotating shaft 903, and the pulley 905 and the rotating shaft 903 are rotatably connected through the bearing 906.

[0055] The tarpaulin support frame 7 is welded and fixed to the fixed rod 4 and the sliding rod 5. The tarpaulin support frame 7 is formed by welding De25×3 steel pipes. The tarpaulin support frame 7 is equipped with diagonal braces made of the same type of steel pipes inside to ensure that the tarpaulin support frame 7 provides good support for the tarpaulin.

[0056] The traveling mechanism 8 is arranged on the sliding rod 5 that is furthest from the fixed rod 4; the traveling mechanism 8 is welded and fixed to one side of the pad 901 on the sliding limit mechanism 9.

[0057] The walking mechanism 8 has an auxiliary wheel 801 and a drive wheel 802 inside; the drive motor 803 transmits power through the gear box 804; the outer surface of the walking mechanism 8 has a control box 805; the top of the control box 805 has a power cord and the bottom has a remote control 807; the two walking mechanisms 8 can be made to move synchronously through the remote control 807.

[0058] In use, first connect the walking mechanism 8 to the power supply via the power cord on the control box 805. Then, use the remote control 807 to drive the walking mechanism 8 to fully extend the telescopic scissor frame 6 to its longest position. Next, cover the entire curing shed vertically along the longitudinal direction of the curing shed, including the entire tarpaulin support frame 7. After covering, cut the tarpaulin according to the cross-sectional dimensions of the curing shed vertically and cover the front and rear ends of the curing shed with tarpaulin. All tarpaulin overlaps are secured with Velcro for easy personnel access and tarpaulin storage. After the tarpaulin is covered and secured to the tarpaulin support frame 7 with cable ties, use the remote control 807 to drive the walking mechanism 8 to fully close the telescopic scissor frame 6 to its shortest position. Then, proceed with the various construction tasks for the precast box girder. After the box girder concrete is poured, use the remote control 807 to drive the walking mechanism 8 to fully extend the steam curing shed and introduce steam for the precast box girder steam curing.

[0059] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A prefabricated box girder electric telescopic steam health preserving shed, characterized in that, include: Mounting rack; The telescopic health shed body is set on the mounting frame, with its head fixed to the corresponding end of the top of the mounting frame and its tail able to slide on the mounting frame. The walking mechanism (8) is installed at the rear of the telescopic health shed body and can move on the top of the mounting frame, realizing the automatic unfolding and folding of the telescopic health shed body. The walking mechanism (8) includes: Casing (806); Auxiliary wheels (801) and drive wheels (802) are installed inside the housing (806) and mounted on top of the mounting bracket; The drive assembly is mounted on the outer wall of the housing (806), and its output shaft is connected to the main shaft of the drive wheel (802). The control box (805) is located on the outer wall of the housing (806), and a switch (807) is installed on it. It is also connected to the start / stop control part of the drive assembly.

2. The prefabricated box girder electric telescopic steam health preserving shed according to claim 1, characterized in that, The mounting bracket includes: Two parallel beams (2) are placed on the ground at their bottoms via supports (1); The slide rail (3) is set on the crossbeam (2); Among them, the tail of the telescopic health shed body can slide on the slide rail (3); the walking mechanism (8) is installed on the slide rail (3); the auxiliary wheel (801) and the drive wheel (802) are installed on the slide rail (3).

3. The prefabricated box girder electric telescopic steam health preserving shed according to claim 2, characterized in that, The retractable health shed body includes: Two fixed rods (4) are vertically fixed to one end of the upper part of the two crossbeams (2); Several sliding rods (5) are sequentially mounted on the slide rail (3) at the bottom. Several tarpaulin support frames (7) are set on the upper part of the crossbeam (2). The first tarpaulin support frame (7) is fixedly installed at the top of two fixed rods (4) at both ends, and the other support frames (7) are installed at the top of the corresponding sliding rods (5) at both ends. The fixed rod (4) and the sliding rod (5), as well as the adjacent sliding rods (5), are connected by telescopic scissor brackets (6).

4. The prefabricated box girder electric telescopic steam health preserving shed according to claim 3, characterized in that: The fixed rod (4) and the sliding rod (5) are both provided with a crossbar (11) on one side of their upper part and a rod (10) on the same side of their lower part through a sliding sleeve (12). The crossbar (11) and the rod (10) are used to connect to the corresponding ends of the telescopic scissor frame (6).

5. The prefabricated box girder electric telescopic steam health preserving shed according to claim 3, characterized in that: The bottom of the sliding rod (5) is mounted on the slide rail (3) via a sliding limiting mechanism (9); The sliding limiting mechanism (9) includes: A horizontally positioned pad (901) is positioned at the bottom of the sliding rod (5); Two side plates (902) are vertically set on both sides of the bottom of the pad (901); A horizontally positioned pivot (903) is mounted on two side plates (902) at both ends; The pulley (905) is mounted on the rotating shaft (903) through a bearing (906); Two anti-tilt bolts (904) are installed on the bottom sidewalls of the two side plates (902) respectively, so that the two side plates (902) can be stably limited on the slide rail (3).

6. The prefabricated box girder electric telescopic steam health preserving shed according to claim 1, characterized in that: The driving component includes: Drive motor (803): The gearbox (804) has its power input shaft connected to the main shaft of the drive motor (803) and its power output shaft connected to the main shaft of the drive wheel (802).

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