A tensioning trolley

Abstract

This utility model relates to the technical field of prestressed construction equipment, specifically to a tensioning trolley, comprising a chassis, wheels rotatably mounted on the chassis, a roof above the chassis, two supports between the chassis and the roof, and a crossbeam between the two supports. A support beam is positioned below the crossbeam, and a longitudinal beam is positioned between the support beam and the crossbeam. All the crossbeams, support beams, and longitudinal beams are of I-beam structure. A longitudinal seat is mounted at the bottom of the longitudinal beam. Support wheels are mounted on both sides of the support beam. A first motor is mounted on the longitudinal seat. A support base is mounted at one end of the support beam, located between the longitudinal seat and one end of the longitudinal beam. Longitudinal wheels are mounted on both sides of the longitudinal beam, rotatably mounted on the support base. A fixed seat is mounted at the other end of the support beam, and the distance between the fixed seat and the support seat is not less than the distance from the longitudinal seat to the other end of the longitudinal beam. This utility model provides a tensioning trolley with easy adjustment of the suspension tilt angle and high flexibility.

Description

Technical Field

[0001] This utility model relates to the technical field of prestressed construction equipment, specifically to a tensioning trolley. Background Technology

[0002] Prestressed tensioning technology involves tensioning prestressing tendons, such as steel strands, attached to concrete members. This induces tensile stress in the prestressing tendons, thereby applying compressive stress to the concrete member beforehand. When the concrete member is subjected to external loads during actual use, the pre-applied compressive stress effectively counteracts the effects of the external loads, significantly improving the crack resistance and overall load-bearing capacity of the concrete member, and effectively extending the service life of the concrete structure. For tensioning operations, prestressing jacks and hydraulic pumps are commonly used tensioning machinery. The main function of the hydraulic pump is to provide stable and continuous pressure to the prestressing jacks, ensuring that the jacks can accurately apply, hold, and anchor the prestressing tendons, thus successfully completing the tensioning operation. Due to the significant weight of the prestressing jacks, they must be lifted before tensioning to assemble them onto the prestressing tendons. To facilitate the assembly of jacks onto prestressing tendons such as steel strands, and to meet the need for simultaneous transport of prestressing equipment such as prestressing jacks and oil pumps, tensioning trolleys equipped with electric hoists are typically used. Tensioning trolleys not only efficiently lift and assemble prestressing jacks, but also allow for flexible movement on the construction site, greatly improving the construction efficiency and safety of prestressed engineering projects.

[0003] The tensioning trolley, a mechanical device used for prestressed concrete construction, mainly consists of a car body, a support frame, an electric hoist, and a moving mechanism. The car body provides space for prestressed equipment such as prestressing jacks and oil pumps, allowing for the simultaneous movement of multiple pieces of prestressed equipment. The frame provides the supporting structure, enabling the electric hoist to lift and suspend the prestressed equipment. A moving mechanism is installed between the top of the frame and the electric hoist. This mechanism includes a top beam, a trolley, and a motor. The motor drives the trolley to move along the extension of the top beam, thereby moving the electric hoist and adjusting the position of the suspended prestressed equipment, and assembling the prestressing jacks onto the prestressing tendons. However, in actual operation, to move the prestressed equipment onto or off the car body, one side of the top beam needs to extend beyond the car body. Since the top beam itself is fixed, this affects the flexibility of the tensioning trolley. Furthermore, a single electric hoist cannot rotate the prestressing jacks. To install the suspended prestressing jacks onto the prestressing tendons, manual rotation is required, increasing the installation burden and potentially impacting construction efficiency. While using multiple electric hoists in coordination can rotate the jacks, this necessitates simultaneous operation of multiple hoists, significantly increasing complexity and difficulty, and demanding higher skill levels from operators. Therefore, the tensioning trolley has limitations. Improving the tensioning trolley to enhance its flexibility and facilitate adjustment of the suspension tilt angle will allow it to play a greater role in prestressed concrete construction. Summary of the Invention

[0004] In view of the shortcomings of the prior art, this utility model provides a tensioning trolley that is easy to adjust the tilt angle of the suspension and has high flexibility, in order to overcome the defects in the prior art.

[0005] The technical solution adopted by this utility model is as follows: a tensioning trolley includes a chassis, wheels rotatably mounted on the chassis, a roof above the chassis, two supports between the chassis and the roof, and a crossbeam between the two supports. A support beam is provided below the crossbeam, and a longitudinal beam is provided between the support beam and the crossbeam. The crossbeam, support beam, and longitudinal beam all adopt an I-beam structure. The longitudinal beam is perpendicular to the crossbeam and connected to it. A longitudinal seat is installed at the bottom of the longitudinal beam. Support wheels are respectively provided on both sides of the support beam, located between the top plate and the bottom plate of the support beam. The support wheels are rotatably mounted on the longitudinal seat, and a first motor is installed on the longitudinal seat. The drive end of the first motor is connected to... The support wheels are connected, and a support seat is installed at one end of the support beam. The support seat is located between the longitudinal seat and one end of the longitudinal beam. Longitudinal wheels are respectively set on both sides of the longitudinal beam. The longitudinal wheels are located between the top plate and the bottom plate of the longitudinal beam. The longitudinal wheels are rotatably mounted on the support seat. A fixed seat is installed at the other end of the support beam. The fixed seat is located on the side of the longitudinal seat away from the support seat. A second motor is installed on the fixed seat and the support seat respectively. A first rope is wound on the drive shaft of the second motor. One end of the first rope is installed on the second motor, and the other end of the first rope is installed on the fixed seat or the support seat. A first hook is fitted on the first rope. The distance between the fixed seat and the support seat is not less than the distance from the longitudinal seat to the other end of the longitudinal beam.

[0006] Preferably, a slide is provided on the side of the support base away from the fixed base, and pulleys are provided on both sides of the longitudinal beam. The pulleys are located between the top plate and the bottom plate of the longitudinal beam. The pulleys are rotatably mounted on the slide. A third motor is mounted on the slide. The drive end of the third motor is connected to the pulley. A fourth motor is mounted on the slide. A second rope is wound on the drive shaft of the fourth motor. One end of the second rope is mounted on the fourth motor, and the other end of the second rope is mounted on the slide. A second hook is fitted on the second rope.

[0007] Preferably, a fixed frame is provided between the two supports, and the bottom ends of the fixed frame and the supports are respectively installed on the bottom surface of the chassis. Fixed beams are respectively provided on the fixed frame and the supports. The canopy is installed on the fixed beams. One side of the fixed beam is installed on the top of the fixed frame or the supports. The top of the crossbeam is installed on one side of the fixed beam. One side of the longitudinal beam is connected to the crossbeam. The other side of the fixed beam and the other side of the longitudinal beam are both located outside the chassis. The sliding seat is located between the through end of the support beam and the longitudinal beam.

[0008] Preferably, the fourth motor and the second motor mounted on the support are both located between the slide and the support, and a pad made of elastic material is provided on the side of the fourth motor near the support, and the pad is mounted on the fourth motor.

[0009] Preferably, the longitudinal beam is located below the ceiling, the distance between the fixed seat and the support seat is not greater than the length of the longitudinal beam, and the distance between the fixed seat and the support seat is not less than the width of the chassis.

[0010] Preferably, a cross seat is installed on the top of the longitudinal beam, and cross wheels are respectively provided on both sides of the cross beam. The cross wheels are located between the top plate and the bottom plate of the cross beam. The cross wheels are rotatably mounted on the cross seat, and a fifth motor is installed on the cross seat. The drive end of the fifth motor is connected to the cross wheels.

[0011] Preferably, electric telescopic cylinders are vertically installed on both sides of the chassis, and a fixing plate is installed below the electric telescopic cylinder, with the fixing plate mounted on the telescopic rod of the electric telescopic cylinder.

[0012] The beneficial effects of this utility model are as follows: First, the utility model uses a longitudinal seat, support wheels, and a first motor to control the movement of the support beam along the extension direction of the longitudinal beam. The support seat and longitudinal wheel at one end of the support beam reinforce the assembly between the support beam and the longitudinal beam, improving the stability of the support beam assembly. Furthermore, the fixed seat at the other end of the support beam allows the support beam to simultaneously move the support seat and fixed seat during movement, reducing the complexity and difficulty of operation. By assembling a second motor, a first rope, and a first hook at each of the support seat and fixed seat, electric hoists are formed at both ends of the support beam. By controlling the first motor to move the support beam and controlling the second motor to raise and lower the first hook, the tilt angle of the suspension can be flexibly adjusted to meet the requirements of suspension control. In addition, by ensuring that the distance between the fixed seat and the support seat is not less than the distance from the longitudinal seat to the other end of the longitudinal beam, one side of the support beam can pass under the longitudinal beam, allowing one side of the support beam to be moved outside the chassis. This not only satisfies the need to move the prestressed equipment out of or onto the chassis but also improves the flexibility of transporting the prestressed equipment.

[0013] Secondly, this invention utilizes pulleys and a third motor to control the movement of the slide block along the longitudinal beam. A fourth motor, a second rope, and a second hook on the slide block form an electric hoist, facilitating the suspension of prestressed equipment such as prestressed jacks and improving the suspension capacity of this invention. Furthermore, the fixed frame separates the space between the two supports and enhances the support effect of the crossbeam. An elastic material pad on the fourth motor cushions collisions with the second motor, preventing damage to both motors.

[0014] Furthermore, this utility model uses a horizontal wheel and a fifth motor to move the horizontal seat and longitudinal beam along the extension direction of the horizontal beam, thereby adjusting the lateral position of the suspended prestressed equipment. The electric telescopic cylinder and fixed plate are used to assist in supporting the chassis and prevent the chassis from tipping over, thus improving the support stability of the chassis. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 middle Figure 1 Enlarged diagram of point A in the middle.

[0017] Figure 3 This is the first assembly and usage diagram of the crossbeam, longitudinal beam, and support beam in this utility model.

[0018] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0019] Figure 5 This is a second assembly and usage diagram of the crossbeam, longitudinal beam, and support beam in this utility model. Detailed Implementation

[0020] like Figures 1 to 5As shown, a tensioning trolley includes a chassis 1, wheels 2 rotatably mounted on the chassis 1, a canopy 3 above the chassis 1, two supports 4 between the chassis 1 and the canopy 3, and a crossbeam 5 between the two supports 4. The canopy 3 and the crossbeam 5 are respectively mounted on the chassis 1 via the supports 4. A support beam 6 is provided below the crossbeam 5, and a longitudinal beam 7 is provided between the support beam 6 and the crossbeam 5. The crossbeam 5, support beam 6, and longitudinal beam 7 all adopt an I-beam structure. The longitudinal beam 7 is perpendicular to the crossbeam 5, parallel to the support beam 6, and connected to the crossbeam 5. The bottom of the longitudinal beam 7 is mounted with... A longitudinal seat 8 is provided, and support wheels 9 are respectively provided on both sides of the support beam 6. The support wheels 9 are located between the top plate and the bottom plate of the support beam 6. The support wheels 9 are rotatably mounted on the longitudinal seat 8. A first motor 10 is mounted on the longitudinal seat 8. The drive end of the first motor 10 is connected to the support wheels 9, so that the first motor 10 drives the support wheels 9 to rotate, thereby controlling the support beam 6 to move along the extension direction of the longitudinal beam 7. A support base 11 is installed at one end of the support beam 6, and the support base 11 is located between the longitudinal seat 8 and one end of the longitudinal beam 7. Longitudinal wheels 12 are respectively provided on both sides of the longitudinal beam 7. Between the top plate and the bottom plate of the longitudinal beam 7, the longitudinal wheel 12 is rotatably mounted on the support seat 11 to reinforce the assembly between the support beam 6 and the longitudinal beam 7, thereby improving the stability of the support beam 6 assembly. A fixed seat 13 is installed at the other end of the support beam 6, located on the side of the longitudinal seat 8 away from the support seat 11. A second motor 14 is installed on both the fixed seat 13 and the support seat 11. A first rope 15 is wound around the drive shaft of the second motor 14. One end of the first rope 15 is mounted on the second motor 14, and the other end is mounted on either the fixed seat 13 or the support seat 11. The first hook 16 is fitted onto the cable 15. The distance between the fixed seat 13 and the support seat 11 is not less than the distance from the longitudinal seat 8 to the other end of the longitudinal beam 7, so that the fixed seat 13 can pass through from below the other end of the longitudinal beam 7. By controlling the rotation of the second motor 14, the winding amount of the first rope 15 is changed, thereby adjusting the height of the first hook 16. The first hook 16 is used to suspend prestressed equipment such as prestressed jacks, that is, the prestressed equipment is suspended at both ends of the support beam 6. The first motor 10 is used to control the longitudinal movement of the first hook 16 so as to move the suspended prestressed equipment longitudinally.

[0021] In this embodiment, a slide 17 is provided on the side of the support base 11 away from the fixed base 13. Pulleys 18 are respectively provided on both sides of the longitudinal beam 7. The pulleys 18 are located between the top plate and the bottom plate of the longitudinal beam 7. The pulleys 18 are rotatably mounted on the slide 17. A third motor 19 is mounted on the slide 17. The drive end of the third motor 19 is connected to the pulley 18, so that the third motor 19 drives the pulley 18 to rotate, so as to control the slide 17 to move along the extension direction of the longitudinal beam 7. A fourth motor 20 is mounted on the slide 17. A second rope 21 is wound on the drive shaft of the fourth motor 20. One end of the second rope 21 is mounted on the fourth motor 20, and the other end of the second rope 21 is mounted on the slide 17. A second hook 22 is fitted on the second rope 21, so that the second hook 22 is used to suspend prestressed equipment such as prestressed jacks, thereby improving the suspension capacity of this utility model.

[0022] Specifically, a fixing frame 23 is provided between the two supports 4. The bottom ends of the fixing frame 23 and the supports 4 are respectively installed on the bottom surface of the chassis 1. Fixing beams 24 are respectively provided on the fixing frame 23 and the supports 4. The canopy 3 is installed on the fixing beams 24. One side of the fixing beams 24 is installed on the top of the fixing frame 23 or the supports 4. The top of the crossbeam 5 is installed on one side of the fixing beam 24. The fixing frame 23 is used to divide the space between the two supports 4 and improve the support effect of the crossbeam 5. One side of the longitudinal beam 7 is connected to the crossbeam 5, so that the crossbeam 5 is located above the chassis 1. The crossbeam 5 is connected to the fixing frame 23 and the supports 4. The other side of the fixing beam 24 and the other side of the longitudinal beam 7 are both located outside the chassis 1. The sliding seat 17 is located between the through end of the support beam 6 and the longitudinal beam 7, so that the second hook 22 can be used to carry the suspended prestressed equipment to be moved from the chassis 1 or to the chassis 1.

[0023] Please refer to it again. Figure 2 The fourth motor 20 and the second motor 14 mounted on the support base 11 are both located between the slide 17 and the support base 11. A pad 25 made of elastic material is provided on the side of the fourth motor 20 near the support base 11. The pad 25 is installed on the fourth motor 20 to buffer the collision between the fourth motor 20 and the second motor 14 and prevent damage to the fourth motor 20 and the second motor 14.

[0024] In this embodiment, the longitudinal beam 7 is located below the ceiling 3. The distance between the fixed seat 13 and the support seat 11 is not greater than the length of the longitudinal beam 7, so that the support seat 11 and the fixed seat 13 can be stored below the ceiling 3. The distance between the fixed seat 13 and the support seat 11 is not less than the width of the chassis 1, so that the first hook 16 can be used to carry the suspended prestressed equipment from the chassis 1 or move it onto the chassis 1.

[0025] Specifically, a cross seat 26 is installed on the top of the longitudinal beam 7, and cross wheels 27 are respectively provided on both sides of the cross beam 5. The cross wheels 27 are located between the top plate and the bottom plate of the cross beam 5. The cross wheels 27 are rotatably mounted on the cross seat 26. A fifth motor 28 is installed on the cross seat 26. The drive end of the fifth motor 28 is connected to the cross wheel 27, so that the fifth motor 28 drives the cross wheel 27 to rotate, so as to control the cross seat 26 and the longitudinal beam 7 to move along the extension direction of the cross beam 5, so as to adjust the lateral position of the suspended prestressed equipment.

[0026] Please refer to it again. Figure 1 Electric telescopic cylinders 29 are vertically arranged on both sides of the chassis 1. A fixing plate 30 is arranged below the electric telescopic cylinder 29. The fixing plate 30 is installed on the telescopic rod of the electric telescopic cylinder 29. By controlling the electric telescopic cylinder 29 to extend, the fixing plate 30 is used to assist the chassis 1 in support, thereby improving the support stability of the chassis 1.

[0027] The instructions for using this product are as follows: Figures 1 to 5 As shown, firstly, the electric telescopic cylinder 29 is extended, causing the fixed plate 30 to press against the ground. The fixed plate 30 assists the chassis 1 for support. The position of the support beam 6 is adjusted by controlling the first motor 10 and the fifth motor 28, and the position of the slide 17 is adjusted by controlling the third motor 19. Then, the second motor 14 and the fourth motor 20 are controlled to lift the prestressing equipment using the first hook 16 and the second hook 22, thereby placing multiple prestressing devices onto the chassis 2 in sequence. Next, after the multiple prestressing devices are assembled, the electric telescopic cylinder 23 is retracted to prevent the base plate 24 from obstructing the movement of the product. Then, the product is moved to the construction area to be tensioned using a trailer. Then, the electric telescopic cylinder 29 is controlled to extend, causing the fixed plate 30 to press against the ground. The fixed plate 30 is used to support the auxiliary chassis 1. According to the tensioning operation requirements, the first motor 10, the second motor 14, the third motor 19, the fourth motor 20, and the fifth motor 28 are operated to move multiple prestressing devices for use in order to complete the tensioning operation. In addition, to ensure the safety and stability of the operation and to prevent the second motor 14 and the fourth motor 20 from moving in opposite directions during operation, it is particularly important to avoid the first motor 10 and the third motor 19 from rotating in opposite directions during operation to ensure the smooth progress of the tensioning operation.

[0028] In this embodiment, the longitudinal seat 8, support wheel 9, and first motor 10 are configured to control the movement of the support beam 6 along the extension direction of the longitudinal beam 7. The support seat 11 and longitudinal wheel 12 at one end of the support beam 6 reinforce the assembly between the support beam 6 and the longitudinal beam 7, thereby improving the stability of the support beam 6 assembly. The fixed seat 13 at the other end of the support beam 6 allows the support beam 6 to move the support seat 11 and the fixed seat 13 together during the movement, reducing the complexity and difficulty of operation. The second motor 14, the first rope 15, and the first hook 16 are respectively mounted on the support seat 11 and the fixed seat 13 to form electric lifting machines at both ends of the support beam 6. By controlling the first motor 10 to move the support beam 6 and controlling the second motor 14 to raise and lower the first hook 16, the tilt angle of the suspension can be flexibly adjusted to meet the requirements of suspension control. In addition, by controlling the distance between the fixed seat 13 and the support seat 11 to be no less than the distance from the longitudinal seat 8 to the other end of the longitudinal beam 7, one side of the support beam 6 can pass through from under the longitudinal beam 7, which means that one side of the support beam 6 can be moved to the chassis 1. This not only satisfies the need to move the prestressed equipment out or onto the chassis 1, but also improves the flexibility of handling the prestressed equipment.

[0029] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A tensioning trolley, comprising a chassis (1), wheels (2) rotatably mounted on the chassis (1), a canopy (3) disposed above the chassis (1), two supports (4) disposed between the chassis (1) and the canopy (3), and a crossbeam (5) disposed between the two supports (4), characterized in that: A support beam (6) is provided below the crossbeam (5), and a longitudinal beam (7) is provided between the support beam (6) and the crossbeam (5). The crossbeam (5), support beam (6), and longitudinal beam (7) all adopt an I-beam structure. The longitudinal beam (7) is perpendicular to the crossbeam (5) and is connected to the crossbeam (5). A longitudinal seat (8) is installed at the bottom of the longitudinal beam (7). Support wheels (9) are provided on both sides of the support beam (6). The support wheels (9) are located between the top plate and the bottom plate of the support beam (6). The support wheels (9) are rotatably mounted on the longitudinal seat (8). A first motor (10) is installed on the longitudinal seat (8). The drive end of the first motor (10) is connected to the support wheel (9). A support seat (11) is installed at one end of the support beam (6). The support seat (11) is located between the longitudinal seat (8) and one end of the longitudinal beam (7). A longitudinal wheel (12) is provided on each side. The longitudinal wheel (12) is located between the top plate of the longitudinal beam (7) and the bottom plate of the longitudinal beam (7). The longitudinal wheel (12) is rotatably mounted on the support seat (11). A fixed seat (13) is installed at the other end of the support beam (6). The fixed seat (13) is located on the side of the longitudinal seat (8) away from the support seat (11). A second motor (14) is installed on the fixed seat (13) and the support seat (11). A first rope (15) is wound on the drive shaft of the second motor (14). One end of the first rope (15) is installed on the second motor (14). The other end of the first rope (15) is installed on the fixed seat (13) or the support seat (11). A first hook (16) is fitted on the first rope (15). The distance between the fixed seat (13) and the support seat (11) is not less than the distance from the longitudinal seat (8) to the other end of the longitudinal beam (7).

2. The tensioning trolley according to claim 1, characterized in that: The support base (11) is provided with a slide (17) on the side away from the fixed base (13). Pulleys (18) are provided on both sides of the longitudinal beam (7). The pulleys (18) are located between the top plate and the bottom plate of the longitudinal beam (7). The pulleys (18) are rotatably mounted on the slide (17). A third motor (19) is mounted on the slide (17). The drive end of the third motor (19) is connected to the pulley (18). A fourth motor (20) is mounted on the slide (17). A second rope (21) is wound on the drive shaft of the fourth motor (20). One end of the second rope (21) is mounted on the fourth motor (20), and the other end of the second rope (21) is mounted on the slide (17). A second hook (22) is fitted on the second rope (21).

3. The tensioning trolley according to claim 2, characterized in that: A fixed frame (23) is provided between the two supports (4). The bottom ends of the fixed frame (23) and the supports (4) are respectively installed on the bottom surface of the chassis (1). Fixed beams (24) are respectively provided on the fixed frame (23) and the supports (4). The canopy (3) is installed on the fixed beams (24). One side of the fixed beams (24) is installed on the top of the fixed frame (23) or the supports (4). The top of the crossbeam (5) is installed on one side of the fixed beam (24). One side of the longitudinal beam (7) is connected to the crossbeam (5). The other side of the fixed beam (24) and the other side of the longitudinal beam (7) are both located outside the chassis (1). The sliding seat (17) is located between the support beam (6) and the through end of the longitudinal beam (7).

4. The tensioning trolley according to claim 2, characterized in that: The second motor (14) installed on one side of the fourth motor (20) and the support base (11) is located between the slide (17) and the support base (11). The side of the fourth motor (20) near the support base (11) is provided with a pad (25) made of elastic material, and the pad (25) is installed on the fourth motor (20).

5. The tensioning trolley according to claim 1, characterized in that: The longitudinal beam (7) is located below the ceiling (3), the distance between the fixed seat (13) and the support seat (11) is not greater than the length of the longitudinal beam (7), and the distance between the fixed seat (13) and the support seat (11) is not less than the width of the chassis (1).

6. The tensioning trolley according to claim 1, characterized in that: The top of the longitudinal beam (7) is equipped with a cross seat (26), and the two sides of the cross beam (5) are respectively provided with cross wheels (27). The cross wheels (27) are located between the top plate and the bottom plate of the cross beam (5). The cross wheels (27) are rotatably mounted on the cross seat (26). A fifth motor (28) is mounted on the cross seat (26), and the drive end of the fifth motor (28) is connected to the cross wheel (27).

7. The tensioning trolley according to claim 1, characterized in that: Electric telescopic cylinders (29) are vertically installed on both sides of the chassis (1). A fixing plate (30) is installed below the electric telescopic cylinder (29). The fixing plate (30) is installed on the telescopic rod of the electric telescopic cylinder (29).

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