Vertical prestress tensioning trolley

Abstract

The utility model discloses a vertical prestress tensioning trolley, which relates to the technical field of bridge construction and comprises a frame, moving wheels are mounted at four corners of the bottom of the frame, a moving frame is arranged on the frame, first-stage rollers are symmetrically mounted at two ends of the moving frame, first-stage limiting grooves are formed in positions, corresponding to the first-stage rollers, of the frame, and a second-stage limiting groove is formed in a position, corresponding to the first-stage rollers, of the frame. A first-stage positioning assembly is connected between the movable frame and the frame, a crown block cross beam is arranged on the movable frame, second-stage rolling wheels are installed at the two ends of the crown block cross beam, the jack is lifted through the winch, and the frame is moved to a construction position. The lowering position of the jack is further determined by adjusting the positions of the moving frame and the crown block cross beam, the jack can be lowered, the jack can be lifted and moved to the next construction point after construction is completed, the jack does not need to be carried manually, the position of the jack is convenient to adjust, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a vertical prestressed tensioning trolley. Background Art

[0002] Vertical prestressing is a construction process that applies vertical prestress to concrete structures. It is commonly used in structures such as bridges, viaducts, and high-rise buildings to improve the structure's bearing capacity, crack resistance, and durability.

[0003] In the prior art, vertical prestressing is performed by two workers carrying a jack by hand or on their shoulders, which results in low efficiency and high labor intensity, and is not conducive to improving construction efficiency.

[0004] Therefore, in order to solve the above problems, a vertical prestressed tensioning trolley is proposed. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a vertical prestressed tensioning trolley, which has the advantages of conveniently moving the jack and improving the construction efficiency.

[0006] The utility model provides the following technical solutions to achieve the above purpose:

[0007] A vertical prestressed tensioning trolley comprises a frame, moving wheels are installed at the four corners of the bottom of the frame, a moving frame is provided on the frame, symmetrically arranged first-level rollers are installed at both ends of the moving frame, a first-level limiting groove is provided at a position corresponding to the first-level roller on the frame, the first-level roller rolls in the first-level limiting groove, a first-level positioning assembly is connected between the moving frame and the frame, a crane beam is provided on the moving frame, second-level rollers are installed at both ends of the crane beam, second-level limiting grooves are provided at a position corresponding to the second-level roller on the moving frame, the second-level roller rolls in the second-level limiting grooves, a second-level positioning assembly is connected between the crane beam and the moving frame, a winch is fixedly connected to the crane beam, a steel wire rope of the winch is connected to the positioning frame, and a jack is provided on the positioning frame.

[0008] Preferably, the frame includes four correspondingly arranged vertical poles, and adjacent vertical poles are respectively connected with correspondingly arranged horizontal beams and longitudinal beams above and below, and the primary limit grooves and the primary positioning components are symmetrically arranged on the two longitudinal beams at the top.

[0009] Preferably, the movable frame is composed of two transverse rods and two longitudinal rods, both ends of the longitudinal rods are fixedly connected to the transverse rods, and the secondary limiting grooves are arranged on the two transverse rods.

[0010] Preferably, the first-level positioning assembly includes a fixed plate, which is fixedly connected to the longitudinal beam, a positioning slot is provided on the fixed plate, the positioning slot is slidably connected to a positioning shell, a movable plate is provided in the positioning shell, a side of the movable plate close to the movable frame is fixedly connected to a positioning rod, a positioning slot is provided on the longitudinal rod at a position corresponding to the positioning rod, an end of the positioning rod passes through the positioning shell and extends into the positioning slot, a side of the movable plate away from the positioning rod is connected to a movable rod, an end of the movable rod passes through the positioning shell and is connected to a pulling block, and a reset spring is sleeved on the movable rod in the positioning shell.

[0011] Preferably, the secondary positioning assembly includes a positioning plate, which is mounted on the overhead travelling crane beam. A positioning bolt is provided on the top of the positioning plate, which is movably connected to the overhead travelling crane beam. Positioning grooves are provided on opposite sides of the transverse rod, and the positioning grooves are slidably connected to the positioning plate through a positioning slider.

[0012] Preferably, the positioning frame includes a bottom support bracket, the top of the bottom support bracket is connected to a top limiting ring through a limiting rod, both sides of the top limiting ring are fixedly connected to hanging rings, and the bottom of the bottom support bracket is fixedly connected to a plurality of evenly distributed support legs.

[0013] Preferably, the inner diameter of the bottom support bracket is smaller than the diameter of the jack.

[0014] Compared with the prior art, the vertical prestressed tensioning trolley provided by the utility model has the following beneficial effects:

[0015] 1. The utility model sets a frame, a moving wheel, a moving frame, a primary roller, a crane beam, a secondary roller, a winch and other structures, lifts the jack by the winch, moves the frame to the construction position, and further determines the lowering position of the jack by adjusting the position of the moving frame and the crane beam, and then puts the jack down. After the construction is completed, the jack is lifted and moved to the next construction point, and no manpower is required to carry the jack, which facilitates the adjustment of the jack position and reduces the labor intensity of workers;

[0016] 2. The utility model sets a primary positioning assembly and a secondary positioning assembly to limit the position of the mobile frame structure and the overhead traveling crane cross beam structure, thereby preventing the mobile frame structure and the overhead traveling crane cross beam structure from being separated and facilitating the removal of the mobile frame structure and the overhead traveling crane cross beam structure for easy maintenance and replacement of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is the appearance diagram of the primary positioning component of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the primary limit groove of the utility model;

[0020] Figure 4 This is the appearance diagram of the secondary positioning assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the positioning groove of the utility model;

[0022] Figure 6 This is a structural schematic diagram of the positioning shell of the utility model;

[0023] Figure 7 It is a structural schematic diagram of the positioning frame of the utility model.

[0024] In the figure: 1, frame; 101, vertical pole; 102, horizontal beam; 103, longitudinal beam; 2, moving wheel; 3, moving frame; 301, horizontal rod; 302, longitudinal rod; 4, primary roller; 5, primary limit groove; 6, primary positioning assembly; 601, fixed plate; 602, positioning slot; 603, positioning shell; 604, movable plate; 605, positioning rod; 606, positioning slot; 607, movable rod; 608 , pulling block; 609, reset spring; 7, overhead crane beam; 8, secondary roller; 9, secondary limit groove; 10, secondary positioning assembly; 1001, positioning plate; 1002, positioning bolt; 1003, positioning slide; 11, winch; 12, positioning frame; 1201, bottom support bracket; 1202, limit rod; 1203, top limit ring; 1204, lifting ring; 1205, support leg; 13, jack. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Embodiment. A vertical prestressed tensioning trolley, the structure of which is referenced Figures 1 to 7As shown, it includes a frame 1, moving wheels 2 are installed at the positions of the four corners at the bottom of the frame 1, and a foot brake is installed on the moving wheel 2. A moving frame 3 is provided on the frame 1, and symmetrically arranged primary rollers 4 are installed at both ends of the moving frame 3. A primary limiting groove 5 is provided at a position corresponding to the primary roller 4 on the frame 1, and the primary roller 4 rolls in the primary limiting groove 5. A primary positioning component 6 is connected between the moving frame 3 and the frame 1, and a crown crane crossbeam 7 is provided on the moving frame 3. Secondary rollers 8 are installed at both ends of the crown crane crossbeam 7. A secondary limiting groove 9 is provided at a position corresponding to the secondary roller 8 on the moving frame 3, and the secondary roller 8 rolls in the secondary limiting groove 9. A secondary positioning assembly 10 is connected between the vehicle beam 7 and the mobile frame 3, the overhead crane beam 7 is fixedly connected with a winch 11, the wire rope of the winch 11 is connected with a positioning frame 12, and a jack 13 is provided on the positioning frame 12. The jack 13 is hoisted by the winch 11, and the frame 1 is moved to the construction position. The lowering position of the jack 13 is further determined by adjusting the position of the mobile frame 3 and the overhead crane beam 7, and the jack 13 can be lowered. After the construction is completed, the jack 13 can be hoisted and moved to the next construction point. No manpower is required to carry the jack 13, which facilitates the adjustment of the position of the jack 13 and reduces the labor intensity of the workers.

[0027] Specifically, the frame 1 includes four correspondingly arranged vertical poles 101, and the adjacent vertical poles 101 are respectively connected with correspondingly arranged horizontal beams 102 and longitudinal beams 103 above and below, and the primary limiting grooves 5 and the primary positioning components 6 are symmetrically arranged on the two longitudinal beams 103 at the top.

[0028] Furthermore, the mobile frame 3 is composed of two transverse rods 301 and two longitudinal rods 302 , both ends of the longitudinal rods 302 are fixedly connected to the transverse rods 301 , and the secondary limiting grooves 9 are provided on the two transverse rods 301 .

[0029] Furthermore, the first-level positioning component 6 includes a fixed plate 601, which is fixedly connected to the longitudinal beam 103. A positioning slot 602 is provided on the fixed plate 601, and the positioning slot 602 is slidably connected to a positioning shell 603. A movable plate 604 is provided in the positioning shell 603. The movable plate 604 is fixedly connected to a positioning rod 605 on one side close to the movable frame 3. A positioning slot 606 is provided at a position corresponding to the positioning rod 605 on the longitudinal rod 302. The end of the positioning rod 605 passes through the positioning shell 603 and extends into the positioning slot 606. A movable rod 607 is connected to the side of the movable plate 604 away from the positioning rod 605. The end of the movable rod 607 passes through the positioning shell 603 and is connected to a pulling block 608. A reset spring 609 is sleeved on the movable rod 607 in the positioning shell 603.

[0030] It is worth mentioning that the secondary positioning assembly 10 includes a positioning plate 1001, which is mounted on the overhead crane beam 7. A positioning bolt 1002 is provided on the top of the positioning plate 1001, and the positioning bolt 1002 is movably connected to the overhead crane beam 7. A positioning groove 1003 is provided on the opposite side of the transverse rod 301, and the positioning groove 1003 is slidably connected to the positioning plate 1001 through a positioning slider.

[0031] It is worth noting that the positioning frame 12 includes a bottom support bracket 1201, the top of the bottom support bracket 1201 is connected to a top limiting ring 1203 through a limiting rod 1202, both sides of the top limiting ring 1203 are fixedly connected to hanging rings 1204, and the bottom of the bottom support bracket 1201 is fixedly connected to a plurality of evenly distributed supporting legs 1205.

[0032] It is worth mentioning that the inner diameter of the bottom support bracket 1201 is smaller than the diameter of the jack 13 .

[0033] Among them, the winch 11 and the jack 13 are existing technologies and will not be described in detail; at the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0034] Working principle and process: Push the frame 1 to move the vertical prestressed tensioning trolley to the construction position, push the moving frame 3 to make the primary roller 4 roll in the primary limit groove 5, push the overhead crane beam 7 to make the secondary roller 8 move in the secondary limit groove 9 to adjust the position of the jack 13, and then start the winch 11 to lower the positioning frame 12 and the jack 13 thereon for construction. After the construction is completed, the jack 13 is lifted by the winch 11 to push the vertical prestressed tensioning trolley to the next construction point, without the need for workers to carry it, reducing labor intensity and improving construction efficiency. When the movable frame 3 structure is to be inspected or replaced, the pulling block 608 of the first-level positioning assembly 6 is pulled, and then the movable rod 607 drives the movable plate 604 and the positioning rod 605 to move, until the positioning rod 605 is disengaged from the positioning groove 606, and the movable frame 3 can be lifted up to remove the movable frame 3. When the overhead crane beam 7 structure needs to be inspected or replaced, the positioning bolt 1002 of the second-level positioning assembly 10 is rotated to move the positioning plate 1001 so that the positioning slider on it leaves the positioning slide groove 1003, and the overhead crane beam 7 structure can be removed to facilitate the use of the vertical prestressed tensioning trolley.

[0035] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A vertical prestressed tensioning trolley, characterized in that: The invention comprises a frame (1), characterized in that: moving wheels (2) are installed at the four corners of the bottom of the frame (1); a moving frame (3) is provided on the frame (1); symmetrically arranged primary rollers (4) are installed at both ends of the moving frame (3); a primary limiting groove (5) is provided at a position on the frame (1) corresponding to the primary roller (4); the primary roller (4) rolls in the primary limiting groove (5); a primary positioning component (6) is connected between the moving frame (3) and the frame (1); and a crane is provided on the moving frame (3). A beam (7) is provided, and two ends of the crane beam (7) are provided with secondary rollers (8). A secondary limiting groove (9) is provided at a position corresponding to the secondary roller (8) on the mobile frame (3). The secondary roller (8) rolls in the secondary limiting groove (9). A secondary positioning assembly (10) is connected between the crane beam (7) and the mobile frame (3). The crane beam (7) is fixedly connected with a winch (11). The steel wire rope of the winch (11) is connected with a positioning frame (12). A jack (13) is provided on the positioning frame (12).

2. The vertical prestressed tensioning trolley according to claim 1, characterized in that: The frame (1) comprises four correspondingly arranged vertical poles (101), and adjacent vertical poles (101) are respectively connected with correspondingly arranged horizontal beams (102) and longitudinal beams (103) above and below, and the first-level limiting grooves (5) and the first-level positioning components (6) are symmetrically arranged on the two longitudinal beams (103) located above.

3. The vertical prestressed tensioning trolley according to claim 2, characterized in that: The movable frame (3) is composed of two transverse rods (301) and two longitudinal rods (302), the two ends of the longitudinal rods (302) are fixedly connected to the transverse rods (301), and the secondary limiting grooves (9) are arranged on the two transverse rods (301).

4. The vertical prestressed tensioning trolley according to claim 3 is characterized in that: The primary positioning assembly (6) comprises a fixed plate (601), the fixed plate (601) being fixedly connected to the longitudinal beam (103), a positioning slot (602) being provided on the fixed plate (601), the positioning slot (602) being slidably connected to a positioning shell (603), a movable plate (604) being provided in the positioning shell (603), a positioning rod (605) being fixedly connected to a side of the movable plate (604) close to the moving frame (3), a positioning slot (606) being provided at a position on the longitudinal rod (302) corresponding to the positioning rod (605), an end of the positioning rod (605) passing through the positioning shell (603) and extending into the positioning slot (606), a movable rod (607) being connected to a side of the movable plate (604) away from the positioning rod (605), an end of the movable rod (607) passing through the positioning shell (603) and connected to a pulling block (608), and a return spring (609) being sleeved on the movable rod (607) in the positioning shell (603).

5. The vertical prestressed tensioning trolley according to claim 4, characterized in that: The secondary positioning assembly (10) comprises a positioning plate (1001), the positioning plate (1001) being sleeved on the overhead travelling crane beam (7), a positioning bolt (1002) being provided on the top of the positioning plate (1001), the positioning bolt (1002) being movably connected to the overhead travelling crane beam (7), and positioning grooves (1003) being provided on opposite sides of the transverse rod (301), the positioning grooves (1003) being slidably connected to the positioning plate (1001) via positioning sliders.

6. The vertical prestressed tensioning trolley according to claim 1, characterized in that: The positioning frame (12) comprises a bottom support bracket (1201), the top of the bottom support bracket (1201) is connected to a top limit ring (1203) via a limit rod (1202), both sides of the top limit ring (1203) are fixedly connected to hanging rings (1204), and the bottom of the bottom support bracket (1201) is fixedly connected to a plurality of evenly distributed support legs (1205).

7. The vertical prestressed tensioning trolley according to claim 6, characterized in that: The inner diameter of the bottom support bracket (1201) is smaller than the diameter of the jack (13).

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