Prestressed sleeper tensioning machine

Abstract

The utility model discloses a kind of prestressed sleeper tensioning machines, it is related to sleeper tensioning machine technical field, including support frame, the quantity of support frame is two, two The support frame is oppositely arranged, the both sides inner wall of support frame is fixedly connected with first guide rail, the outside of first guide rail is slidably connected with sliding block, the outside of sliding block is fixedly connected with movable plate, the outside of movable plate is fixedly connected with second guide rail.The utility model is set up tensioning component and tensioning rod component, and prestressed reinforcement of mould can be automatically tensioned and locked, the uniformity of the reinforcement applied prestress is ensured, the position of tensioning component is adjusted according to demand by being set up adjusting component, by starting double-shaft motor, mounting plate and tensioning component can be driven to move vertically, by starting driving part, mounting plate and tensioning component can be pushed to move horizontally to another direction, improve the flexibility of device.

Description

Technical Field

[0001] This utility model relates to the field of railway sleeper tensioning machine technology, specifically a prestressed railway sleeper tensioning machine. Background Technology

[0002] In the production of concrete railway sleepers, in order to improve the crack resistance of the concrete sleepers and avoid premature cracking, it is necessary to pre-stress them during the prefabrication process to improve their structural performance. During prefabrication, the prestressed steel bars need to be tensioned first and anchored to the sleeper mold by locking. Then, concrete is poured into the sleeper mold. After the concrete has cured to a certain strength and ensures sufficient bond between the concrete and the prestressed steel bars, the prestressed steel bars of the sleeper are then released.

[0003] Existing technologies mostly rely on manual assistance to tension and lock the prestressed steel bars anchored on the sleeper mold. This not only involves high labor intensity, high labor costs, and low construction efficiency, but also the possibility of uneven application of prestress to the steel bars due to errors by construction workers during the tensioning and locking process, which can lead to safety hazards and make it difficult to guarantee the quality of the sleepers. Therefore, we propose a prestressed sleeper tensioning machine to solve the shortcomings of the existing technology. Utility Model Content

[0004] One of the technical problems this application aims to solve is that manually tensioning and locking the prestressed steel bars anchored on the sleeper mold is not only labor-intensive, costly, and inefficient, but also poses safety hazards because construction workers may make mistakes during the tensioning and locking process, resulting in uneven application of prestress to the steel bars.

[0005] To address the aforementioned technical problems, this application provides a prestressed sleeper tensioning machine, comprising two support frames arranged opposite each other. A first guide rail is fixedly connected to the inner walls of both sides of each support frame. A slider is slidably connected to the outer side of each first guide rail. A movable plate is fixedly connected to the outer side of the slider. A second guide rail is fixedly connected to the outer side of the movable plate. A mounting plate is slidably connected to the outer side of the second guide rail. Several tensioning components are arranged on the outer side of the mounting plate. A tensioning rod assembly is provided at one end of each tensioning component. An adjustment component is provided on the inner side of one of the support frames. Bolts are threadedly connected to the four corners of the bottom end of each support frame.

[0006] In some embodiments, the tensioning assembly includes a hydraulic cylinder, a connecting plate, and a connecting rod. One end of the hydraulic cylinder is fixedly connected to the outside of the mounting plate, the outside of the connecting plate is fixedly connected to the output shaft of the hydraulic cylinder, and one end of the connecting rod is fixedly connected to the outside of the connecting plate.

[0007] In some embodiments, the tensioning assembly further includes a tensioning head, a pressing cylinder, a positioning plate, and a claw. The outer side of the tensioning head is fixedly connected to one end of a connecting rod, the bottom end of the pressing cylinder is fixedly connected to the top end of the tensioning head, the top end of the positioning plate is fixedly connected to the output shaft of the pressing cylinder, and one end of the claw is rotatably connected to the outer side of the tensioning head.

[0008] In some embodiments, the tensioning assembly further includes an annular rack, protrusions, a drive motor, and a gear. The inner wall of the annular rack is fixedly connected to the outer side of the jaw. There are four protrusions, one end of which is fixedly connected to one end of the jaw. One end of the drive motor is fixedly connected to the outer side of the tensioning head. The outer side of the gear is fixedly connected to the output shaft of the drive motor, and the bottom of the gear meshes with the annular rack.

[0009] In some embodiments, the tension rod assembly includes a screw, a limiting plate, a locking nut, and a groove. The screw is disposed at one end of the tension assembly, the outer side of the limiting plate is fixedly connected to one end of the screw, the inner wall of the locking nut is threadedly connected to the outer side of the screw, and the groove is formed on the outer side of the locking nut and is arranged in a circular array.

[0010] In some embodiments, the adjustment assembly includes a slide, a dual-axis motor, and a connecting shaft. The slide is formed on both sides of the support frame, the top end of the dual-axis motor is fixedly connected to the inner wall of the support frame, and the connecting shaft is fixedly connected to the output shafts at both ends of the dual-axis motor.

[0011] In some embodiments, the adjustment assembly further includes a first connecting rod, a second connecting rod, and a driving component. One end of the first connecting rod is fixedly connected to one end of a connecting shaft, the top end of the second connecting rod is rotatably connected to the other end of the first connecting rod, and the bottom end of the second connecting rod is rotatably connected to the outside of a movable plate via a rotating shaft. The rotating shaft between the second connecting rod and the movable plate is located inside a slide groove.

[0012] This utility model has at least the following beneficial effects:

[0013] I. This utility model, through its tensioning assembly and tensioning rod assembly, can automatically tension and lock the prestressed steel bars in the mold, ensuring the uniformity of the applied prestress. The outer end of the mold's screw is inserted into the tensioning head, and simultaneously, the protrusion is inserted into the groove to complete the connection. Then, a downward-pressing cylinder drives the positioning plate downwards, causing the positioning plate to abut against the outside of the screw, thus positioning the screw. Simultaneously, the drive motor is activated, driving the gear to rotate, which, in conjunction with the ring rack and protrusion, rotates the locking nut, causing it to move towards the mold and ultimately be confined to it. Finally, a hydraulic cylinder is activated to push the connecting plate horizontally, and the connecting rod drives the tensioning head to move for tensioning, effectively improving work efficiency.

[0014] II. The present invention, through the setting of the adjustment component, can adjust the position of the tensioning component according to the requirements. By starting the dual-axis motor, the connecting shafts at both ends are driven to rotate, which in turn drives the first connecting rod to rotate. In conjunction with the second connecting rod and the slide, the movable plate can be driven to move vertically, and the mounting plate and tensioning component can be driven to move vertically. By starting the drive component, the mounting plate and tensioning component can be pushed to move horizontally in another direction, improving the flexibility of the device.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the device of this utility model from another perspective;

[0018] Figure 3 This is a schematic diagram of the tensioning component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the tensioning head of this utility model;

[0020] Figure 5 This is a schematic diagram of the tension rod assembly structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the adjustment component structure of this utility model.

[0022] In the diagram: 1. Support frame; 2. First guide rail; 3. Slider; 4. Movable plate; 5. Second guide rail; 6. Mounting plate; 7. Tensioning assembly; 701. Hydraulic cylinder; 702. Connecting plate; 703. Connecting rod; 704. Tensioning head; 705. Pressing cylinder; 706. Positioning plate; 707. Claw; 708. Ring rack; 709. Protrusion; 710. Drive motor; 711. Gear; 8. Tensioning rod assembly; 801. Screw; 802. Limiting plate; 803. Locking nut; 804. Groove; 9. Adjusting assembly; 901. Slide groove; 902. Dual-axis motor; 903. Connecting shaft; 904. Connecting rod one; 905. Connecting rod two; 906. Drive component; 10. Bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-6 As shown, this utility model provides a technical solution: a prestressed sleeper tensioning machine, including a support frame 1, the number of support frames 1 is two, the two support frames 1 are arranged opposite to each other, the inner walls of both sides of the support frame 1 are fixedly connected to a first guide rail 2, the outer side of the first guide rail 2 is slidably connected to a slider 3, the outer side of the slider 3 is fixedly connected to a movable plate 4, the outer side of the movable plate 4 is fixedly connected to a second guide rail 5, the outer side of the second guide rail 5 is slidably connected to an mounting plate 6, the outer side of the mounting plate 6 is provided with several tensioning components 7, one end of the tensioning component 7 is provided with a tensioning rod component 8, the inner side of one of the support frames 1 is provided with an adjusting component 9, and the bottom four corners of the support frame 1 are all threadedly connected with bolts 10;

[0025] The tension rod assembly 8 is located on the outside of the mold. The mold is moved to one side of the mounting plate 6 so that the tension rod assembly 8 is aligned with the tensioning assembly 7. Then, the tension rod assembly 8 is inserted into the tensioning assembly 7 for locking tension. The vertical position of the tensioning assembly 7 can be adjusted according to the height of the tension rod assembly 8 outside the mold by adjusting the assembly 9.

[0026] like Figure 1-4 As shown, the tensioning assembly 7 includes a hydraulic cylinder 701, a connecting plate 702, a connecting rod 703, a tensioning head 704, a pressing cylinder 705, a positioning plate 706, a chuck 707, a ring rack 708, a protrusion 709, a drive motor 710, and a gear 711. One end of the hydraulic cylinder 701 is fixedly connected to the outside of the mounting plate 6. The outside of the connecting plate 702 is fixedly connected to the output shaft of the hydraulic cylinder 701. One end of the connecting rod 703 is fixedly connected to the outside of the connecting plate 702. The outside of the tensioning head 704 is fixedly connected to one end of the connecting rod 703. The bottom end of the pressing cylinder 705... The top of the positioning plate 706 is fixedly connected to the top of the tensioning head 704, and the top of the positioning plate 706 is fixedly connected to the output shaft of the pressing cylinder 705. One end of the pawl 707 is rotatably connected to the outside of the tensioning head 704. The inner wall of the ring rack 708 is fixedly connected to the outside of the pawl 707. There are four protrusions 709, one end of which is fixedly connected to one end of the pawl 707. One end of the drive motor 710 is fixedly connected to the outside of the tensioning head 704. The outside of the gear 711 is fixedly connected to the output shaft of the drive motor 710. The bottom of the gear 711 meshes with the ring rack 708.

[0027] The outer end screw 801 of the mold is inserted into the tensioning head 704, and at the same time the protrusion 709 is inserted into the groove 804 to complete the docking. Then, the lowering cylinder 705 drives the positioning plate 706 to move down, so that the positioning plate 706 abuts against the outside of the screw 801, thus positioning the screw 801. The tensioning head 704 can be moved by the connecting rod 703 to perform the tensioning work.

[0028] like Figure 1 , Figure 2 and Figure 5 As shown, the tension rod assembly 8 includes a screw 801, a limiting plate 802, a locking nut 803, and a groove 804. The screw 801 is disposed at one end of the tension assembly 7. The outer side of the limiting plate 802 is fixedly connected to one end of the screw 801. The inner wall of the locking nut 803 is threadedly connected to the outer side of the screw 801. The groove 804 is opened on the outer side of the locking nut 803, and the grooves 804 are arranged in a circular array.

[0029] After the protrusion 709 is inserted into the groove 804 and completes the docking, the drive motor 710 is started to drive the gear 711 to rotate. In conjunction with the rotation of the ring rack 708 and the protrusion 709, the locking nut 803 can be rotated, causing the locking nut 803 to move towards the mold and eventually be confined on the mold.

[0030] like Figure 1 , Figure 2 and Figure 6 As shown, the adjustment assembly 9 includes a slide 901, a dual-axis motor 902, a connecting shaft 903, a first connecting rod 904, a second connecting rod 905, and a drive component 906. The slide 901 is opened on both sides of the support frame 1. The top end of the dual-axis motor 902 is fixedly connected to the inner wall of the support frame 1. The connecting shaft 903 is fixedly connected to the two output shafts of the dual-axis motor 902. One end of the first connecting rod 904 is fixedly connected to one end of the connecting shaft 903. The top end of the second connecting rod 905 is rotatably connected to the other end of the first connecting rod 904. The bottom end of the second connecting rod 905 is rotatably connected to the outer side of the movable plate 4 through a rotating shaft. The rotating shaft between the second connecting rod 905 and the movable plate 4 is located inside the slide 901.

[0031] By starting the dual-axis motor 902, the connecting shafts 903 at both ends are rotated, which in turn drives the first connecting rod 904 to rotate. In conjunction with the second connecting rod 905 and the slide 901, the movable plate 4 can be driven to move vertically, and the mounting plate 6 and the tensioning assembly 7 can be driven to move vertically. By starting the drive unit 906, the mounting plate 6 and the tensioning assembly 7 can be pushed to move horizontally in the other direction, improving the flexibility of the device.

[0032] Working principle: During use, the tensioning rod assembly 8 is located outside the mold. The mold is moved to one side of the mounting plate 6, aligning the screw 801 with the tensioning head 704. Then, the drive unit 906 pushes the mounting plate 6 horizontally, simultaneously moving the tensioning assembly 7. This allows the limiting plate 802 at one end of the screw 801 to insert into the tensioning head 704, while the protrusion 709 inserts into the groove 804 to complete the connection. Subsequently, the pressing cylinder 705 drives the positioning plate 706 downward, causing the positioning plate 706 to abut against the outside of the screw 801, thus positioning the screw 801. Simultaneously, the drive unit 906 is activated. The drive motor 710 drives the gear 711 to rotate, causing the gear 711 to roll on the ring rack 708, which in turn drives the ring rack 708 and the pawl 707 to rotate, and at the same time drives the protrusion 709 to rotate. Ultimately, this drives the locking nut 803 to rotate, causing the locking nut 803 to move towards the mold and eventually be locked on the mold. Finally, the hydraulic cylinder 701 is activated to push the connecting plate 702 to move horizontally, and the connecting rod 703 drives the tensioning head 704 to move horizontally to perform tensioning work, thereby automatically tensioning and locking the prestressed steel bars of the mold and ensuring the uniformity of the prestress applied to the steel bars.

[0033] The vertical position of the tensioning assembly 7 can be adjusted according to the height of the external tensioning rod assembly 8 of the mold. By starting the dual-axis motor 902, the connecting shafts 903 at both ends are rotated, which in turn drives the first connecting rod 904 to rotate. In conjunction with the second connecting rod 905 and the slide 901, the movable plate 4 can be moved vertically, which in turn drives the mounting plate 6 and the tensioning assembly 7 to move vertically. By starting the drive component 906, the mounting plate 6 and the tensioning assembly 7 can be pushed to move horizontally in the other direction. The position of the tensioning assembly 7 can be adjusted according to the requirements, improving the flexibility of the device.

Claims

1. A prestressed sleeper tensioning machine, comprising a support frame (1), characterized in that: There are two support frames (1), which are arranged opposite to each other. The inner walls of both sides of the support frame (1) are fixedly connected to a first guide rail (2). A slider (3) is slidably connected to the outer side of the first guide rail (2). A movable plate (4) is fixedly connected to the outer side of the slider (3). A second guide rail (5) is fixedly connected to the outer side of the movable plate (4). A mounting plate (6) is slidably connected to the outer side of the second guide rail (5). Several tensioning components (7) are arranged on the outer side of the mounting plate (6). A tensioning rod component (8) is arranged at one end of the tensioning component (7). An adjustment component (9) is arranged on the inner side of one of the support frames (1). Bolts (10) are threadedly connected to the four corners of the bottom end of the support frame (1).

2. The prestressed sleeper tensioning machine according to claim 1, characterized in that: The tensioning assembly (7) includes a hydraulic cylinder (701), a connecting plate (702), and a connecting rod (703). One end of the hydraulic cylinder (701) is fixedly connected to the outside of the mounting plate (6). The outside of the connecting plate (702) is fixedly connected to the output shaft of the hydraulic cylinder (701). One end of the connecting rod (703) is fixedly connected to the outside of the connecting plate (702).

3. A prestressed sleeper tensioning machine according to claim 2, characterized in that: The tensioning assembly (7) also includes a tensioning head (704), a pressing cylinder (705), a positioning plate (706), and a claw (707). The outer side of the tensioning head (704) is fixedly connected to one end of the connecting rod (703). The bottom end of the pressing cylinder (705) is fixedly connected to the top end of the tensioning head (704). The top end of the positioning plate (706) is fixedly connected to the output shaft of the pressing cylinder (705). One end of the claw (707) is rotatably connected to the outer side of the tensioning head (704).

4. A prestressed sleeper tensioning machine according to claim 3, characterized in that: The tensioning assembly (7) further includes an annular rack (708), protrusions (709), a drive motor (710), and a gear (711). The inner wall of the annular rack (708) is fixedly connected to the outer side of the claw (707). There are four protrusions (709). One end of the protrusion (709) is fixedly connected to one end of the claw (707). One end of the drive motor (710) is fixedly connected to the outer side of the tensioning head (704). The outer side of the gear (711) is fixedly connected to the output shaft of the drive motor (710). The bottom of the gear (711) meshes with the annular rack (708).

5. A prestressed sleeper tensioning machine according to claim 4, characterized in that: The tension rod assembly (8) includes a screw (801), a limiting plate (802), a locking nut (803), and a groove (804). The screw (801) is disposed at one end of the tension assembly (7). The outer side of the limiting plate (802) is fixedly connected to one end of the screw (801). The inner wall of the locking nut (803) is threadedly connected to the outer side of the screw (801). The groove (804) is opened on the outer side of the locking nut (803), and the groove (804) is arranged in a circular array.

6. A prestressed sleeper tensioning machine according to claim 1, characterized in that: The adjustment component (9) includes a slide (901), a dual-axis motor (902), and a connecting shaft (903). The slide (901) is opened on both sides of the support frame (1). The top end of the dual-axis motor (902) is fixedly connected to the inner wall of the support frame (1). The connecting shaft (903) is fixedly connected to the output shafts at both ends of the dual-axis motor (902).

7. A prestressed sleeper tensioning machine according to claim 6, characterized in that: The adjustment assembly (9) also includes a first connecting rod (904), a second connecting rod (905), and a driving component (906). One end of the first connecting rod (904) is fixedly connected to one end of the connecting shaft (903). The top end of the second connecting rod (905) is rotatably connected to the other end of the first connecting rod (904). The bottom end of the second connecting rod (905) is rotatably connected to the outside of the movable plate (4) through a rotating shaft. The rotating shaft between the second connecting rod (905) and the movable plate (4) is located inside the slide groove (901).

Images