Length-adjustable three-section type tensioning frame

Abstract

The utility model relates to the technical field of three-section type tensioning frames, in particular to a length-adjustable three-section type tensioning frame which comprises a mounting frame, telescopic rods are fixed to the four corners of the upper end of the mounting frame, a connecting frame is fixed to the upper ends of the four telescopic rods together, a driving mechanism is mounted at the upper end of the mounting frame, a straight rack is arranged on the driving mechanism, and the straight rack is connected with the connecting frame. A control mechanism is arranged on the spur rack, two second steel wire rope assemblies are arranged on the control mechanism, a fixing plate is fixed to the upper end of the mounting frame, the driving mechanism is connected with the fixing plate, a first vertical plate is slidably mounted on one side of the fixing plate, and a second vertical plate is slidably mounted on one side of the first vertical plate. Automatic regulation and control can be achieved, the problem that stretching and retracting of the tensioning frame are inconvenient to adjust rapidly is solved, the work progress can be effectively accelerated, the lifting stability can be effectively guaranteed, the use safety is improved, and stretching and retracting of the tensioning frame are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of three-section tensioning frame technology, and in particular to an adjustable-length three-section tensioning frame. Background Technology

[0002] Balance tensioners are important equipment for reinforcing and tightening steel, compressed wood boards, metal castings, etc. They can prevent the workpieces from shifting or deforming during processing by tightening them. Therefore, a balance tensioner is needed to improve the tightening effect on the workpieces during processing.

[0003] Existing balance tensioners suffer from poor tightening effect, inability to adjust size, and difficulty in fixing the device during operation. A balance tensioner with publication number CN222449892U includes a main body with a tensioning mechanism installed on its inner wall. This invention utilizes a tensioning mechanism where a transmission gear and a rack and pinion slider are meshed, with the rack and pinion slider symmetrically arranged around the center of the transmission gear. During use, rotating a rotating rod drives the transmission gear and rack and pinion slider to mesh, tightening and fixing the workpiece, increasing the device's practicality. A fixing mechanism is also included, where a fixing rod is threaded to the main body via a nut. Fixing grooves are evenly distributed along the outer wall of the main body. During use, after adjusting the rack and pinion slider to a suitable position, the fixing rod is inserted into the fixing groove and passes through a hole in the rack and pinion slider to fix it, preventing the rack and pinion slider from loosening and reducing the tightening effect, thus increasing the device's stability.

[0004] The existing technical solution cannot quickly and smoothly adjust the length, so it needs to be improved. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an adjustable length three-section tensioning bracket.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable-length three-section tensioning frame includes a mounting frame. Telescopic rods are fixed to the four corners of the upper end of the mounting frame. A connecting frame is fixed to the upper ends of the four telescopic rods. A drive mechanism is mounted on the upper end of the mounting frame. The drive mechanism has a rack and pinion, and a control mechanism is mounted on the rack and pinion. Two second wire rope assemblies are mounted on the control mechanism. A fixing plate is fixed to the upper end of the mounting frame. The drive mechanism is connected to the fixing plate. A first vertical plate is slidably mounted on one side of the fixing plate, and a second... The vertical plate has two second rotating wheels installed on both sides of its upper end. Two second wire rope assemblies are wound around the two second rotating wheels respectively. The lower ends of the two second wire rope assemblies are fixed to both sides of the lower end of the first vertical plate. The lower ends of the fixed plate have first wire rope assemblies fixed on both sides of its lower end. The upper ends of the first vertical plate have first rotating wheels installed on both sides of its upper end. Two first wire rope assemblies are wound around the two first rotating wheels respectively. The lower ends of the two first wire rope assemblies are fixed to both sides of the lower end of the second vertical plate. The upper end of the second vertical plate is fixed to the lower end of the connecting frame.

[0008] Preferably, in order to ensure stable power delivery, the drive mechanism includes a hydraulic telescopic assembly mounted on the upper end of the mounting frame. The piston rod end of the hydraulic telescopic assembly is fixed with a connector, which is detachably connected to the lower end of a rack. An L-shaped rod is slidably mounted on the rack, with one end of the L-shaped rod fixed to one side of a fixed plate and the lower end of the L-shaped rod fixed to the upper end of the mounting frame.

[0009] Preferably, in order to quickly lift and lower, the control mechanism includes a gear meshing with the upper end of a rack, a horizontal shaft fixedly mounted on the gear, two fixed frames rotatably mounted on the horizontal shaft, the lower end of the fixed frame fixed to the upper end of the mounting frame, wire rope winding wheel assemblies fixed at both ends of the horizontal shaft, and two second wire rope assemblies respectively fixed on the two wire rope winding wheel assemblies.

[0010] Preferably, in order to improve overall stability and reduce vibration, damping pads are fixed at the lower ends of both the first and second vertical plates.

[0011] Preferably, the connector is provided with a plurality of fastening bolts, all of which are screwed onto the lower end of the rack.

[0012] The beneficial effects of this utility model are:

[0013] 1. The hydraulic telescopic assembly can provide stable power, ensuring the stability of power transmission and helping the equipment to lift and lower smoothly. At the same time, the winding length can be adjusted by the different diameters of the gear and wire winding wheel assembly, which makes it easy to control the lifting height of the connecting frame.

[0014] 2. The second steel wire rope assembly can pull up the first vertical plate. At the same time, the rise of the first vertical plate will cause the first rotating wheel to rise, which will cause the second vertical plate to rise, improving the efficiency of height adjustment. Furthermore, the damping and shock-absorbing pads ensure the stability of the fall and avoid vibration.

[0015] In summary, this utility model can achieve automated control, avoid the problem of the tensioning frame being inconvenient to quickly adjust its extension and retraction, effectively improve work progress, effectively ensure the stability of lifting and lowering, improve the safety of use, and facilitate the extension and retraction of the tensioning frame. Attached Figure Description

[0016] Figure 1 This is a connection structure diagram of the present invention;

[0017] Figure 2 This is a structural diagram showing the position of the wire winding wheel assembly and gears of this utility model;

[0018] Figure 3 This is a schematic diagram of the vertical plate rising structure of this utility model;

[0019] Figure 4 This is an enlarged view of point A in this utility model;

[0020] In the diagram: 1 Connecting frame, 2 Fastening bolts, 3 Telescopic rod, 4 Mounting frame, 5 Damping shock absorber, 6 First vertical plate, 7 L-shaped rod, 8 Wire winding wheel assembly, 9 Horizontal shaft, 10 Fixing frame, 11 Gear, 12 Second vertical plate, 13 First rotating wheel, 14 Second rotating wheel, 15 Second wire rope assembly, 16 Fixing plate, 17 First wire rope assembly, 18 Straight rack, 19 Connector, 20 Hydraulic telescopic assembly. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4 An adjustable length three-section tensioning frame includes a mounting frame 4. Telescopic rods 3 are fixed at the four corners of the upper end of the mounting frame 4. The upper ends of the four telescopic rods 3 are jointly fixed to a connecting frame 1, which can adapt to the lifting and lowering of the connecting frame 1 and ensure the stability of the connecting frame 1 during lifting and lowering. A drive mechanism is installed at the upper end of the mounting frame 4. A straight rack 18 is provided on the drive mechanism, and the drive mechanism can make the straight rack 18 move smoothly.

[0023] Reference Figure 1-4The drive mechanism includes a hydraulic telescopic assembly 20 mounted on the upper end of the mounting bracket 4. The hydraulic telescopic assembly 20 is connected to external components and can operate stably, facilitating the movement of the rack 18. A connector 19 is fixed to the end of the piston rod of the hydraulic telescopic assembly 20. The connector 19 is detachably connected to the lower end of the rack 18. Multiple fastening bolts 2 are threaded through the connector 19 and screwed into the lower end of the rack 18. An L-shaped rod 7 is slidably mounted on the rack 18. One end of the L-shaped rod 7 is fixed to one side of the fixing plate 16, and the lower end of the L-shaped rod 7 is fixed to the upper end of the mounting bracket 4. The L-shaped rod 7 ensures the stability of the movement of the rack 18 and facilitates the stability of power transmission.

[0024] Reference Figure 1-4 The rack 18 is equipped with a control mechanism, which has two second wire rope assemblies 15. The control mechanism enables the two second wire rope assemblies 15 to operate, facilitating the adjustment of the lifting and lowering of the connecting frame 1.

[0025] Reference Figure 1-4 The control mechanism includes a gear 11 meshing with the upper end of a rack 18. A horizontal shaft 9 is fixedly mounted on the gear 11. Two fixed brackets 10 are rotatably mounted on the horizontal shaft 9. The lower end of the fixed bracket 10 is fixed to the upper end of the mounting bracket 4. Wire winding wheel assemblies 8 are fixed to both ends of the horizontal shaft 9. Two second wire rope assemblies 15 are respectively fixed to the two wire winding wheel assemblies 8. The gear 11 and the wire winding wheel assemblies 8 rotate around the same axis. The diameter of the gear 11 is smaller than the diameter of the wire winding wheel assembly 8. In the same rotation, the circumference of the wire winding wheel assembly 8 is greater than that of the gear 11, which facilitates quick adjustment.

[0026] Reference Figure 1-4 The upper end of the mounting bracket 4 is fixed with a fixing plate 16, and the drive mechanism is connected to the fixing plate 16 to ensure stability.

[0027] Reference Figure 1-4A first vertical plate 6 is slidably mounted on one side of the fixed plate 16, and a second vertical plate 12 is slidably mounted on one side of the first vertical plate 6. Second rotating wheels 14 are mounted on both sides of the upper end of the fixed plate 16. Two second steel wire rope assemblies 15 are respectively wound around the two second rotating wheels 14. The lower ends of the two second steel wire rope assemblies 15 are respectively fixed to both sides of the lower end of the first vertical plate 6. First steel wire rope assemblies 17 are fixed to both sides of the lower end of the fixed plate 16. First rotating wheels 13 are mounted on both sides of the upper end of the first vertical plate 6. The two first steel wire rope assemblies 17 are respectively wound around the two second rotating wheels 14. On a rotating wheel 13, the lower ends of two first wire rope assemblies 17 are respectively fixed to the lower ends of the second vertical plate 12 on both sides. The upper end of the second vertical plate 12 is fixed to the lower end of the connecting frame 1. The rotation of the gear 11 can cause the horizontal shaft 9 to rotate and drive the wire winding wheel assemblies 8 at both ends to rotate, winding the second wire rope assembly 15 onto the wire winding wheel assembly 8. This will cause the first vertical plate 6 to rise. The rise of the first vertical plate 6 will push the first wire rope assembly 17 through the first rotating wheel 13. The first wire rope assembly 17 will pull the second vertical plate 12 to rise, which can lift the connecting frame 1.

[0028] Reference Figure 1-4 The lower ends of the first vertical plate 6 and the second vertical plate 12 are both fixed with damping pads 5, which help to buffer and reduce vibration.

[0029] In this utility model, during use, the required equipment is transported to the connecting frame 1, and the hydraulic telescopic component 20 is controlled to operate. The hydraulic telescopic component 20 drives the rack 18 to move, which enables the gear 11 to rotate. The rotation of the gear 11 enables the horizontal shaft 9 to rotate and drives the wire winding wheel assemblies 8 at both ends to rotate, winding the second wire rope assembly 15 onto the wire winding wheel assembly 8. This causes the first vertical plate 6 to rise. The rise of the first vertical plate 6 will push the first wire rope assembly 17 through the first rotating wheel 13. The first wire rope assembly 17 will pull the second vertical plate 12 to rise, which can lift the connecting frame 1. At the same time, the telescopic rod 3 can ensure the stability of the connecting frame 1.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable length three-section tensioning bracket, comprising a mounting bracket (4), characterized in that: The mounting frame (4) has four telescopic rods (3) fixed at its upper corners. The upper ends of the four telescopic rods (3) are all fixed with a connecting frame (1). The upper end of the mounting frame (4) is equipped with a drive mechanism. The drive mechanism is equipped with a rack (18). The rack (18) is equipped with a control mechanism. The control mechanism is equipped with two second wire rope assemblies (15). The upper end of the mounting frame (4) is fixed with a fixing plate (16). The drive mechanism and the fixing plate (16) are connected. A first vertical plate (6) is slidably installed on one side of the fixing plate (16). A second vertical plate (12) is slidably installed on one side of the first vertical plate (6). The upper end of the fixing plate (16) is... A second rotating wheel (14) is installed on both sides, and two second wire rope assemblies (15) are wound around the two second rotating wheels (14) respectively. The lower ends of the two second wire rope assemblies (15) are fixed on both sides of the lower end of the first vertical plate (6). A first wire rope assembly (17) is fixed on both sides of the lower end of the fixed plate (16). A first rotating wheel (13) is installed on both sides of the upper end of the first vertical plate (6). Two first wire rope assemblies (17) are wound around the two first rotating wheels (13) respectively. The lower ends of the two first wire rope assemblies (17) are fixed on both sides of the lower end of the second vertical plate (12) respectively. The upper end of the second vertical plate (12) is fixed to the lower end of the connecting frame (1).

2. The adjustable length three-section tensioning frame according to claim 1, characterized in that: The drive mechanism includes a hydraulic telescopic assembly (20) mounted on the upper end of the mounting bracket (4). The piston rod end of the hydraulic telescopic assembly (20) is fixed with a connector (19). The connector (19) is detachably connected to the lower end of a rack (18). An L-shaped rod (7) is slidably mounted on the rack (18). One end of the L-shaped rod (7) is fixed to one side of the fixing plate (16), and the lower end of the L-shaped rod (7) is fixed to the upper end of the mounting bracket (4).

3. The adjustable length three-section tensioning frame according to claim 1, characterized in that: The control mechanism includes a gear (11) meshing with the upper end of a rack (18), a horizontal shaft (9) fixedly mounted on the gear (11), two fixed frames (10) rotatably mounted on the horizontal shaft (9), the lower end of the fixed frame (10) being fixed to the upper end of the mounting frame (4), and wire winding wheel assemblies (8) fixed at both ends of the horizontal shaft (9), and two second wire rope assemblies (15) respectively fixed on the two wire winding wheel assemblies (8).

4. The adjustable length three-section tensioning frame according to claim 1, characterized in that: The lower ends of the first vertical plate (6) and the second vertical plate (12) are both fixed with damping pads (5).

5. The adjustable length three-section tensioning frame according to claim 2, characterized in that: Multiple fastening bolts (2) are provided through the connector (19), and the multiple fastening bolts (2) are all screwed into the lower end of the rack (18).

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