WO2021026984A1

WO2021026984A1 - Rear crossbeam for downstroke self-launching movable support system

Info

Publication number: WO2021026984A1
Application number: PCT/CN2019/104711
Authority: WO
Inventors: 陈学鲁; 梁旭; 夏海亮; 胡滨
Original assignee: 山东恒堃机械有限公司
Priority date: 2019-08-12
Filing date: 2019-09-06
Publication date: 2021-02-18
Also published as: CN210561773U

Abstract

A rear crossbeam for a downstroke self-launching movable support system. During longitudinal movement, a longitudinal movement oil cylinder drives a sliding seat to slide along a guide rail I, so that a rear crossbeam main beam can drive a rear crossbeam and a girder to longitudinally move; due to sliding friction between the lower end of the sliding seat and a sliding plate I, the sliding plate I is made of an engineering plastic alloy material (MGE), which has the characteristics of wear resistance and low friction coefficient; thus, during device movement, the resistance is low, and no vibration and no noise are produced. During lateral movement, a lateral movement oil cylinder drives the girder on the same side to move laterally in a left-right direction with respect to the rear crossbeam; when the girder moves, a support moves along with the girder; the support is in sliding frictional contact with the flange of the rear crossbeam by means of a sliding plate Ⅱ provided at a bending part; the sliding plate II is made of an engineering plastic alloy material (MGE); thus, during device lateral movement, the resistance is low, and no vibration and no noise are produced. Moreover, two rollers 17 have a limiting function to prevent deviation during lateral movement.

Description

Back beam of downward self-moving formwork

Technical field

The utility model relates to the technical field of bridge mechanical equipment, in particular to a rear cross beam of a downward self-moving formwork.

Background technique

The downward self-moving formwork is widely used in the construction of bridges. The existing downward self-moving formwork has no guiding device for the rear beam and main girder and box girder supports. The moving formwork has no guiding device for the rear beam and the main beam during longitudinal or lateral movement. There is hard friction between the beam and the rear cross beam and the box beam, which will cause the equipment to frustrate and tremble due to the large resistance during operation, and also generate noise due to friction during operation. At the same time, there is no guiding device to correct the deviation of the rear cross beam when it moves laterally, which affects the overall reliability of the equipment.

Summary of the invention

In order to overcome the shortcomings of the above technology, the utility model provides a rear crossbeam that is stable, quiet, safe and reliable in the process of longitudinal and lateral movement of the rear crossbeam.

The technical scheme adopted by the utility model to overcome its technical problems is:

A rear crossbeam of a downward self-moving formwork, comprising a rear crossbeam main beam horizontally arranged above the box girder, a hanger arranged vertically on the left and right sides of the lower end of the main beam of the rear crossbeam, and a horizontal hanger installed at the lower end of the same side hanger The rear beam also includes:

The guide rail I is arranged on the box beam along the length of the box beam, and the slide board I made of engineering plastic alloy material is arranged on the guide rail I;

The lower end of the sliding seat is slidably mounted on the guide rail I, and the lower end of the sliding seat is in sliding friction contact with the sliding plate I. The sliding seat is provided with a lifting mechanism for driving the main beam of the rear cross beam to lift;

Longitudinal oil cylinder, which is arranged on the box beam along the front and rear direction, and the head end of the piston rod is connected with the sliding seat;

The front and rear ends of the rear cross beam are respectively provided with brackets. The lower end of the bracket is fixed on the corresponding main beam on the same side. The upper end of the bracket is bent in the direction of the rear beam to form a bending part. The bending part is provided with engineering plastic alloy materials. Sliding plate II, the lower end surface of the sliding plate II is in sliding frictional contact with the upper end surface of the flange at the bottom of the rear cross beam on the same side;

The traverse oil cylinder is arranged on the main beam along the left and right direction, and the head end of the piston rod is connected with the rear beam; and

The front and rear ends of the bracket are respectively mounted with rollers rotating through a rotating shaft, and the rollers are located on the outside of the same side flange at the lower end of the rear cross beam.

In order to balance the force when the main beam moves to the inside of the rear cross beam, it also includes two vertical booms located at the inner end of the hanger. The two booms are arranged symmetrically on the basis of the center of the box girder. The upper end of the boom The main beam of the rear cross beam is locked and fixed by a nut, and the lower end of the boom is locked and fixed to the corresponding rear cross beam on the same side by a nut.

In order to facilitate the removal of the boom, it also includes two brackets vertically arranged at the upper end of the hanger. One end of the chain hoist is hung on the bracket, and the other end is connected to the corresponding boom on the same side.

Further, the above-mentioned jacking mechanism includes N guide rods arranged at the lower end of the main beam of the rear cross beam and surrounding the periphery of the sliding seat. N is a positive integer greater than or equal to 3. The upper end of the sliding seat is inserted into the area between the guide rods. The jack is located in each guide rod, the lower end of which is in contact with the upper end of the sliding seat, and the head end of the piston rod is connected with the main beam of the rear cross beam.

In order to facilitate installation, the lower end of the above-mentioned bending part is provided with a dovetail rail groove, the upper end of the slide plate II is provided with a dovetail rail, the slide plate II is inserted into the dovetail rail groove through the dovetail rail, and the bolt passes through the bending part and is screwed to the slide plate II. in.

The beneficial effect of the utility model is that when longitudinally moving, the longitudinally moving oil cylinder drives the sliding seat to slide along the guide rail I, so that the main beam of the rear cross beam drives the rear beam and the main beam to move longitudinally. Due to the sliding friction between the lower end of the sliding seat and the sliding plate I, the sliding plate Ⅰ The use of engineering plastic alloy material (MGE), which has the characteristics of wear resistance and low friction coefficient, so the resistance of the equipment is small when moving, it will not vibrate, and it will not produce noise. When traversing, the traversing cylinder drives the main beam on the same side to move horizontally relative to the rear cross beam. When the main beam moves, the bracket moves with it. The bracket slides with the flange of the rear beam through the sliding plate II set at the bending part. For frictional contact, the sliding plate Ⅱ uses engineering plastic alloy material (MGE), so the resistance is small when the device moves horizontally, and it will not vibrate or generate noise. At the same time, the two rollers 17 play a limiting role to prevent deviation during lateral movement.

Description of the drawings

Figure 1 is a schematic diagram of the front view of the utility model;

Figure 2 is a schematic diagram of the A-direction structure in Figure 1;

Figure 3 is a schematic diagram of the B-direction structure in Figure 1;

Fig. 4 is a schematic diagram of a partial enlarged structure of C in Fig. 1;

In the figure, 1. main beam 2. rear cross beam main beam 3. hanger 4. rear cross beam 5. box beam 6. boom 7. bracket 8. nut 9. bracket 10. traverse cylinder 11. sliding seat 12. guide Rod 13. Longitudinal shift cylinder 14. Guide rail I 15. Slide plate I 16. Rotating shaft 17. Roller 18. Bending part 19. Slide plate II 20. Flange.

detailed description

Hereinafter, the present utility model will be further described in conjunction with Figure 1 to Figure 4.

A rear cross beam of a downward self-moving formwork, including a rear cross beam main beam 2 horizontally arranged above the box beam 5, hangers 3 vertically arranged on the left and right sides of the lower end of the rear cross beam main beam 2, and horizontally installed on the same side The rear cross beam 4 at the lower end of the hanger 4 also includes: a guide rail I14, which is arranged on the box beam 5 along the length of the box beam 5; the guide rail I14 is provided with a slide plate I15 made of engineering plastic alloy material; a sliding seat 11 at its lower end It is slidably mounted on the guide rail I14, the lower end of the sliding seat 11 is in sliding friction contact with the sliding plate I15, and the sliding seat 11 is provided with a lifting mechanism for driving the rear cross beam main beam 2 to lift; the longitudinal shifting cylinder 13 is arranged in the front and rear direction On the box girder 5, the piston rod head end is connected with the sliding seat 11; the front and rear ends of the rear cross beam 4 are provided with brackets 9 respectively, and the lower end of the bracket 9 is fixed on the corresponding main beam 1 on the same side, and the upper end of the bracket 9 faces the rear beam The bending part 18 is formed by bending in the direction of 4, and a sliding plate II 19 made of engineering plastic alloy material is arranged under the bending part 18. The lower end surface of the sliding plate II 19 is in sliding friction contact with the upper end surface of the bottom flange of the rear cross beam 4 on the same side. Transverse oil cylinder 10, which is arranged on the main beam 1 along the left and right direction, the piston rod head end is connected with the rear cross beam 4; and the front and rear ends of the bracket 9 are respectively installed with rollers 17, rollers 17 through the rotating shaft 16 Located at the lower end of the rear cross beam 4 outside of the same side flange 20. When longitudinally moving, the longitudinal movement cylinder 13 drives the sliding seat 11 to slide along the guide rail I14, so that the rear cross beam main beam 2 drives the rear cross beam 4 and the main beam 1 to move longitudinally. Due to the sliding friction between the lower end of the sliding seat 11 and the sliding plate I15, the sliding plate I15 adopts Engineering plastic alloy material (MGE) has the characteristics of wear resistance and low friction coefficient, so the resistance when the device moves is small, there is no vibration, and no noise. When traversing, the traversing cylinder 10 drives the main beam 1 on the same side to move laterally relative to the rear cross beam 4 in the left-right direction. When the main beam 1 moves, the bracket 9 moves along with it, and the bracket 9 passes through the sliding plate Ⅱ 19 set at the bending part 18 In sliding friction contact with the flange 20 of the rear cross beam 4, the sliding plate Ⅱ19 is made of engineering plastic alloy material (MGE), so the resistance is small when the device moves horizontally, and there is no vibration or noise. At the same time, the two rollers 17 play a limiting role to prevent deviation during lateral movement.

It can also include two vertical booms 6 located at the inner end of the hanger 3. The two booms 6 are symmetrically arranged on the basis of the center of the box girder 5, and the upper end of the boom 6 is connected to the main beam of the rear cross beam through a nut 8 2 Locking and fixing, the lower end of the boom 6 is locked and fixed with the corresponding rear cross beam 4 on the same side by a nut 8. When the main beam 1 moves to the inner end of the rear cross beam 4, the rear cross beam 4 is subjected to eccentric load. Therefore, the rear cross beam main beam 2 is connected with the rear end of the rear cross beam 4 through the suspension rod 6, which can improve the force of the rear cross beam 4 Balance.

Preferably, it also includes two brackets 7 vertically arranged at the upper end of the hanger 3, one end of the chain hoist is hung on the bracket 7, and the other end is connected to the corresponding boom 6 on the same side. When dismantling, the bracket 7 can be used to conveniently lift the boom 6 through the chain hoist, which improves the convenience of use.

The jacking mechanism may have the following structure, which includes N guide rods 12 arranged at the lower end of the main beam 2 of the rear cross beam and surrounding the periphery of the sliding seat 11, where N is a positive integer greater than or equal to 3, and the upper end of the sliding seat 11 is inserted into each guide rod In the area between 12, the hydraulic jack is located in each guide rod 12, the lower end of which is in contact with the upper end of the sliding seat 11, and the head end of the piston rod is connected to the main beam 2 of the rear cross beam. Each guide rod 12 plays a guiding role, which can ensure that when the hydraulic jack acts to support the main beam 2 of the rear cross beam, the sliding seat 11 is guided to slide up and down along the guide rod 12.

Preferably, the lower end of the bending portion 18 is provided with a dovetail rail groove, and the upper end of the sliding plate II 19 is provided with a dovetail rail. The sliding plate II 19 is inserted into the dovetail rail groove through the dovetail rail. The bolt passes through the bending portion 18 and then screwed into the sliding plate II 19. When the skateboard Ⅱ19 is worn out and needs to be replaced, it can be pulled out of the dovetail rail groove, and then a new skateboard Ⅱ19 can be inserted. After insertion, the skateboard Ⅱ19 can be connected and fixed with the bracket 9 by tightening the bolts.

Claims

A rear cross beam of a downward self-moving formwork, comprising a rear cross beam main beam (2) horizontally arranged above the box beam (5), and hangers ( 3) And the rear cross beam (4) horizontally installed at the lower end of the hanger (4) on the same side, characterized in that it also includes:

The guide rail I (14) is arranged on the box beam (5) along the length of the box beam (5), and the guide rail I (14) is provided with a sliding board I (15) made of engineering plastic alloy material;

The lower end of the sliding seat (11) is slidably mounted on the guide rail I (14), the lower end surface of the sliding seat (11) is in sliding friction contact with the sliding plate I (15), and the sliding seat (11) is provided with a main beam ( 2) Lifting mechanism for jacking;

Longitudinal displacement oil cylinder (13), which is arranged on the box beam (5) along the front and rear direction, and the head end of the piston rod is connected with the sliding seat (11);

The front and rear ends of the rear cross beam (4) are respectively provided with brackets (9), the lower end of the bracket (9) is fixed to the corresponding main beam (1) on the same side, and the upper end of the bracket (9) is bent in the direction of the rear beam (4). A sliding plate II (19) made of engineering plastic alloy material is arranged under the bending part (18). The lower end surface of the sliding plate II (19) and the bottom of the rear cross beam (4) on the same side The upper end surface of the flange is in sliding friction contact;

The traverse oil cylinder (10) is arranged on the main beam (1) along the left and right direction, and the head end of its piston rod is connected with the rear cross beam (4); and

The front and rear ends of the bracket (9) are respectively mounted with rollers (17) rotatably through a rotating shaft (16), and the rollers (17) are located outside the lower end of the rear cross beam (4) on the same side flange (20).
The rear crossbeam of the downward self-moving formwork according to claim 1, characterized in that it further comprises two hanging rods (6) arranged vertically and located at the inner end of the hanger (3), two hanging rods (6) Set symmetrically on the basis of the center of the box girder (5), the upper end of the boom (6) is locked and fixed with the main beam of the rear cross beam (2) through the nut (8), and the lower end of the boom (6) is through the nut (8) The rear cross beam (4) corresponding to the same side is locked and fixed.
The rear cross beam of the downward self-moving formwork according to claim 1, characterized in that it further comprises two brackets (7) vertically arranged at the upper end of the hanger (3), and one end of the chain hoist is hung on the bracket (7). ), the other end is connected with the corresponding boom (6) on the same side.
The rear crossbeam of the downward self-moving formwork according to claim 1, characterized in that: the jacking mechanism includes N guides arranged at the lower end of the main beam (2) of the rear crossbeam and surrounding the periphery of the sliding seat (11). Rod (12), N is a positive integer greater than or equal to 3, the upper end of the sliding seat (11) is inserted into the area between each guide rod (12), and the hydraulic jack is located in each guide rod (12), and its lower end is connected to the sliding seat (11). The upper end of the piston rod is in contact with the upper end of the piston rod and the main beam (2) of the rear cross beam is connected.
The rear crossbeam of the downward self-moving mold base according to claim 1, characterized in that: the lower end of the bending part (18) is provided with a dovetail rail groove, the upper end of the slide plate II (19) is provided with a dovetail rail, and the slide plate II (19) Insert the dovetail rail into the dovetail rail groove, and the bolts pass through the bending part (18) and are screwed into the slide plate II (19).