A conveying structure of a precast box girder inner mold support

Abstract

The utility model discloses a conveying structure of prefabricated box girder inner mould support belongs to prefabricated beam auxiliary production device technical field, it includes two transmission support and a row of auxiliary support, is provided with a plurality of roller and support leg respectively on the top and bottom of transmission support and auxiliary support, still is installed with motor and positioning support on transmission support, rotatably is installed with the pivot on positioning support, is provided with output sprocket and transmission sprocket respectively on the middle part and one end side of pivot, motor is powered by external power supply, and is connected through chain between the output of motor and transmission sprocket, still is set up channel steel in the lower bottom of inner mould support, is provided with a plurality of rollers in the inner chamber of channel steel, and output sprocket can be matched with roller and drive inner mould support to move, the utility model solves the problem that the traditional traction equipment moves the inner mould support and has poor applicability, and the inner mould is easy to deviate when moving, and the working efficiency is low.

Description

Technical Field

[0001] This utility model relates to the technical field of precast beam auxiliary production devices, specifically to a conveying structure for a precast box girder inner mold support. Background Technology

[0002] In the production process of precast box girders, it is necessary to use inner mold supports to support the inner wall of the box girder. Currently, the transportation of inner mold supports mostly uses a traction winch with steel wire rope. This inner mold conveying system generally has the following technical defects: (1) It adopts an integral steel structure frame with a fixed length that cannot be adjusted, making it difficult to adapt to the production needs of box girders with different spans; (2) There are many transmission mechanisms, which have problems such as asynchronous traction and poor positioning accuracy, which can easily lead to the inner mold support shifting or colliding during movement; (3) The conveying platform lacks modular design, and professional hoisting equipment is required for on-site assembly, resulting in low assembly efficiency and poor site adaptability. Utility Model Content

[0003] The technical problem this invention aims to solve is to provide a conveying structure for the inner mold support of precast box girders, thereby addressing the issues of poor applicability, easy displacement of the inner mold during movement, and low work efficiency associated with traditional traction equipment for moving the inner mold support.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] A conveying structure for a precast box girder inner mold support includes two transmission supports and several auxiliary supports. The auxiliary supports are connected in a row, and the auxiliary supports at each end are connected to the two transmission supports respectively. Several rollers and support legs are respectively provided at the top and bottom of the transmission supports and auxiliary supports. A motor and a positioning support are also installed on the transmission supports. A rotating shaft is rotatably installed on the positioning support. An output sprocket and a transmission sprocket are respectively provided at the middle and one end of the rotating shaft. The motor is powered by an external power supply, and the output end of the motor is connected to the transmission sprocket by a chain. A channel steel is also provided at the bottom of the inner mold support. Several rollers are provided in the inner cavity of the channel steel, and the output sprocket can cooperate with the rollers to drive the inner mold support to move.

[0006] Preferably, the two transmission supports have the same structure; and the two transmission supports are symmetrically arranged about the center line of the auxiliary support; the transmission support is a hollow frame structure spliced ​​by several connecting rods; several positioning holes are opened at the upper and lower connecting rod positions at the tail of the hollow frame; the auxiliary support is detachably connected to the hollow frame at the positioning holes; a lower support plate is provided at the middle position of the front side of the hollow frame; the motor is mounted on the lower support plate; a vertical rod is also provided on the positioning support; the positioning support is located at the top of the vertical rod; the output sprocket extends from the top of the transmission support.

[0007] Furthermore, an upper support plate is also provided on the transmission bracket; the upper support plate is located above the lower support plate, and the top of the upper support plate is attached to the positioning support.

[0008] Furthermore, the lower support plate is a horizontal rectangular grid plate structure, and a pad is provided on the grid plate; the motor is mounted on the pad; the upper support plate is an I-shaped bracket structure; the front and rear ends of the lower and upper support plates are respectively connected to the connecting rods on the vertical plane of the transmission bracket; a support rod is provided between the lower support plate and the upper support plate.

[0009] Furthermore, there are two uprights; the middle crossbar of the upper support plate is sandwiched between the tops of the two uprights.

[0010] Preferably, a lifting ear plate is also provided on the top of the transmission support; a lifting hole is opened on the lifting ear plate; the height of the upper cylinder of the roller is not less than the height of the top of the lifting ear plate.

[0011] Preferably, the positioning support includes a base plate; a pair of bearing seats are provided on the base plate; the rotating shaft is mounted on the bearing seats, with one end extending outward; the output sprocket device is located between the two bearing seats on the rotating shaft; and the transmission sprocket is provided on the outwardly extending part of the rotating shaft.

[0012] Preferably, the auxiliary support includes a rectangular frame; I-beams are installed near the four corners of the rectangular frame; the I-beams are parallel to each other and are all horizontally arranged; several positioning holes are opened on the extended ends of the I-beams; adjacent I-beams are detachably connected to each other at the positioning holes by bolts with strips; the I-beams are detachably connected to the transmission support at the positioning holes by bolts; the rollers and legs on the auxiliary support are respectively arranged at the upper and lower parts of the rectangular frame.

[0013] Preferably, the support leg includes a cantilevered support plate; a positioning hole is provided in the middle of the support plate; a pair of protective ear plates are provided on the support plate at the positioning hole; and a movable support member is provided at the positioning hole.

[0014] The beneficial effects of this utility model are reflected in the following aspects:

[0015] 1. Through the bolted connection structure between the auxiliary support and the transmission support, the number of auxiliary supports can be flexibly increased or decreased according to the length of the inner mold support or box girder, thereby adjusting the conveying length and significantly improving the adaptability of the equipment to different engineering scenarios.

[0016] 2. The symmetrically arranged transmission brackets are driven by independent motors to drive the sprocket set, which in turn engages with the rollers in the bottom groove of the inner mold bracket to provide stable support and ensure that the traction force is uniform and synchronous on both sides of the inner mold bracket on the transmission bracket, effectively avoiding deviation or jamming.

[0017] 3. Module assembly can be completed without welding, improving on-site assembly efficiency and reducing logistics costs through standard transport unit disassembly;

[0018] 4. The outriggers are equipped with hydraulic jacks and protective ear plates to form a stable support and leveling structure, which effectively addresses the problem of uneven foundations at the construction site and improves the stability of the system;

[0019] 5. The open frame structure and quick-release bearing housing design facilitate the maintenance and replacement of transmission components, while each module can be repaired independently, greatly reducing maintenance costs.

[0020] 6. Compared with traditional winch equipment, it does not generate dust due to wire rope friction. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention in an embodiment;

[0022] Figure 2 This is a schematic diagram of the installation of the transmission bracket and the lower support plate in this embodiment;

[0023] Figure 3 This is a disassembly diagram of the lower support plate, upper support plate, and positioning support in this embodiment;

[0024] Figure 4 This is a schematic diagram of the structure when the two auxiliary supports are spliced ​​together in this embodiment;

[0025] Explanation of reference numerals in the attached drawings: 1. Transmission support, 2. Auxiliary support, 3. Roller, 4. Support leg, 5. Motor, 6. Positioning support, 7. Rotary shaft, 8. Output sprocket, 9. Transmission sprocket, 10. Lower support plate, 11. Upper support plate, 12. Vertical pole, 13. Lifting lug. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] Example:

[0028] Reference Figure 1This embodiment provides a conveying structure for a precast box girder inner mold support; it includes two transmission supports 1 and several auxiliary supports 2; the auxiliary supports 2 are connected in a row, and the auxiliary supports 2 at the ends are respectively connected to the two transmission supports 1; several rollers 3 and support legs 4 are respectively provided at the top and bottom of the transmission supports 1 and the auxiliary supports 2; a motor 5 and a positioning support 6 are also installed on the transmission supports 1; a rotating shaft 7 is rotatably installed on the positioning support 6; an output sprocket 8 and a transmission sprocket 9 are respectively provided at the middle and one end of the rotating shaft 7; the motor 5 is powered by an external power supply, and the output end of the motor 5 is connected to the transmission sprocket 9 by a chain; a channel steel is also provided at the bottom of the inner mold support; several rollers are provided in the inner cavity of the channel steel, and the output sprocket 8 can cooperate with the rollers to drive the inner mold support to move. In this embodiment, the roller includes a pair of ear plates, a support shaft is provided between the ear plates, and a pressure-bearing cylinder is installed on the support shaft; the support rods on both sides of the box girder inner mold support are placed on the pressure-bearing cylinder, and the output sprocket passes through the roller in the channel steel at the bottom of the precast box girder inner mold support.

[0029] The two transmission supports 1 have identical structures; and the two transmission supports 1 are symmetrically arranged about the centerline of the auxiliary support 2. The transmission support 1 is a hollow frame structure assembled from several connecting rods; several positioning holes are opened at the upper and lower connecting rod positions at the tail of the hollow frame; the auxiliary support 2 is detachably connected to the hollow frame at the positioning holes; a lower support plate 10 is provided at the middle position of the front side of the hollow frame; the motor 5 is mounted on the lower support plate 10; a vertical rod 12 is also provided on the positioning support 6; the positioning support 6 is located at the top of the vertical rod 12; the output sprocket 8 extends from the top of the transmission support 1. Reinforcing ribs are provided in the hollow frame to enhance the structural strength.

[0030] An upper support plate 11 is also provided on the transmission bracket 1; the upper support plate 11 is located above the lower support plate 10, and the top of the upper support plate 11 is attached to the positioning support 6.

[0031] The lower support plate 10 is a horizontal rectangular grid plate structure, and a pad is provided on the grid plate; the motor 5 is mounted on the pad; the upper support plate 11 is an I-shaped bracket structure; the front and rear ends of the lower support plate 10 and the upper support plate 11 are respectively connected to the connecting rods on the vertical plane of the transmission bracket 1; a support rod is provided between the lower support plate 10 and the upper support plate 11.

[0032] There are two uprights 12; the middle crossbar of the upper support plate 11 is sandwiched between the tops of the two uprights 12.

[0033] A lifting ear plate 13 is also provided on the top of the transmission bracket 1; a lifting hole is opened on the lifting ear plate 13; the height of the upper cylinder of the roller 3 is not less than the height of the top of the lifting ear plate 13.

[0034] The positioning support 6 includes a base plate; a pair of bearing seats are provided on the base plate; the rotating shaft 7 is mounted on the bearing seats, with one end extending outward; the output sprocket 8 is located between the two bearing seats on the rotating shaft 7; and the transmission sprocket 9 is located on the outwardly extending part of the rotating shaft 7.

[0035] The auxiliary support 2 includes a rectangular frame; I-beams are installed near its four corners on the rectangular frame; the I-beams are parallel to each other and horizontally arranged; several positioning holes are opened on the extended ends of the I-beams; adjacent I-beams are detachably connected to each other at the positioning holes by bolts with strips; the I-beams are detachably connected to the transmission support 1 at the positioning holes by bolts; the rollers 3 and legs 4 on the auxiliary support 2 are respectively arranged at the upper and lower parts of the rectangular frame. The rollers on both the transmission support and the auxiliary support are arranged in pairs, and the rollers on the transmission support are correspondingly arranged on the transverse connecting rods in the width direction.

[0036] The outrigger 4 includes a cantilevered support plate; a positioning hole is formed in the middle of the support plate; a pair of protective ear plates are provided on the support plate at the positioning hole; and a movable support component is provided at the positioning hole. In this embodiment, the movable support component is a hydraulic jack.

[0037] When using the utility model device in this embodiment, it is only necessary to follow Figure 1 The equipment is assembled at the front end of the precast box girder cavity; then, the inner mold support is hoisted on the top of the equipment by a crane, and the output sprocket is locked on the roller in the channel steel at the bottom of the inner mold support. Then, the motors on the transmission supports on both sides are started simultaneously, so that the output sprocket can drive the inner mold support to move into the cavity of the precast box girder.

Claims

1. A delivery structure for a precast box girder inner formwork support, characterized by: It includes two transmission brackets (1) and several auxiliary brackets (2); the auxiliary brackets (2) are connected in a row, and the auxiliary brackets (2) at the ends are connected to the two transmission brackets (1) respectively; several rollers (3) and support legs (4) are respectively provided at the top and bottom of the transmission brackets (1) and the auxiliary brackets (2); a motor (5) and a positioning support (6) are also installed on the transmission brackets (1); a rotating shaft (7) is rotatably installed on the positioning support (6); an output sprocket (8) and a transmission sprocket (9) are respectively provided in the middle and on one end of the rotating shaft (7); the motor (5) is powered by an external power supply, and the output end of the motor (5) is connected to the transmission sprocket (9) by a chain; a channel steel is also provided at the bottom of the inner mold bracket; several rollers are provided in the inner cavity of the channel steel, and the output sprocket (8) can cooperate with the rollers to drive the inner mold bracket to move.

2. The delivery structure of a precast box girder inner formwork support according to claim 1, characterized in that: The two transmission brackets (1) have the same structure; and the two transmission brackets (1) are symmetrical about the center line of the auxiliary bracket (2); the transmission bracket (1) is a hollow frame structure spliced ​​by several connecting rods; several positioning holes are opened at the upper and lower connecting rod positions at the tail of the hollow frame; the auxiliary bracket (2) is detachably connected to the hollow frame at the positioning holes; a lower support plate (10) is set at the middle position of the front side of the hollow frame; the motor (5) is installed on the lower support plate (10); a vertical rod (12) is also set on the positioning support (6); the positioning support (6) is set at the top of the vertical rod (12); the output sprocket (8) extends from the top of the transmission bracket (1).

3. The conveying structure for the inner formwork support of a precast box girder according to claim 2, characterized in that: An upper support plate (11) is also provided on the transmission bracket (1); the upper support plate (11) is located above the lower support plate (10), and the top of the upper support plate (11) is attached to the positioning support (6).

4. The conveying structure for the inner formwork support of a precast box girder according to claim 3, characterized in that: The lower support plate (10) is a horizontal rectangular grid plate structure, and a pad is provided on the grid plate; the motor (5) is installed on the pad; the upper support plate (11) is an I-shaped bracket structure; the front and rear ends of the lower support plate (10) and the upper support plate (11) are respectively connected to the connecting rods on the vertical plane of the transmission bracket (1); a support rod is provided between the lower support plate (10) and the upper support plate (11).

5. The conveying structure for the inner formwork support of a precast box girder according to claim 4, characterized in that: There are two uprights (12); the middle crossbar of the upper support plate (11) is sandwiched between the tops of the two uprights (12).

6. The conveying structure for the inner formwork support of a precast box girder according to claim 1, characterized in that: A lifting ear plate (13) is also provided on the top of the transmission bracket (1); a lifting hole is opened on the lifting ear plate (13); the height of the upper cylinder of the roller (3) is not less than the height of the top of the lifting ear plate (13).

7. The conveying structure for the inner formwork support of a precast box girder according to claim 1, characterized in that: The positioning support (6) includes a base plate; a pair of bearing seats are provided on the base plate; the rotating shaft (7) is mounted on the bearing seats, with one end extending outward; the output sprocket (8) is located between the two bearing seats on the rotating shaft (7); the transmission sprocket (9) is provided on the outward-extending part of the rotating shaft (7).

8. The conveying structure of the precast box girder inner formwork support according to claim 1, characterized in that: The auxiliary support (2) includes a rectangular frame; I-beams are installed near the four corners of the rectangular frame; the I-beams are parallel to each other and are all horizontally arranged; several positioning holes are opened on the extended ends of the I-beams; adjacent I-beams are connected by strips installed in the positioning holes by bolts; the I-beams are detachably connected to the transmission support (1) in the positioning holes by bolts; the rollers (3) and legs (4) on the auxiliary support (2) are respectively set in the upper and lower parts of the rectangular frame.

9. The conveying structure of the precast box girder inner formwork support according to claim 1, characterized in that: The outrigger (4) includes a cantilevered support plate; a positioning hole is provided in the middle of the support plate; a pair of protective ear plates are provided on the support plate at the positioning hole; and a movable support component is provided at the positioning hole.

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