Safety belt tightener

Abstract

The utility model discloses a safety belt tightener, and relates to the technical field of belt tighteners. The belt tightener comprises a belt tightener body, a slow release assembly and a locking assembly, a mounting shell is fixedly connected to the front side of the top of the belt tightener body, and a fixing frame is movably connected to the rear side of the belt tightener body. Through the slow release assembly, the tensioned bandage can be slowly released, the handle is rotated in the bandage release process, the cam is controlled to rotate through the handle, the cam rotates to extrude the rubber plate, the rubber plate moves upwards after being extruded, and the conveying roller enters an inner cavity of the friction groove; the contact area of the rubber plate and the conveying roller is increased, the friction force between the rubber plate and the conveying roller is used for reducing the rotating speed of the conveying roller, the binding belt is slowly released, a worker can observe bound goods in the process of releasing the binding belt, the goods are prevented from falling after inclining, and safety is improved.

Description

Technical Field

[0001] This utility model belongs to the field of belt tightening technology, and in particular relates to a safety belt tightening device. Background Technology

[0002] A strap tensioner is a device used to tighten and secure goods. It uses mechanical principles to fasten and secure goods manually or mechanically. Straps tensioners are characterized by their ability to lock in place without falling off, safety and reliability, and ease of operation. They are widely used in cargo transportation, warehousing and other fields for securing and protecting goods.

[0003] Currently, the strap tightener uses a ratchet to coil and tighten the strap, ensuring that the strap can securely hold the goods and prevent them from shifting or falling during transportation due to vibration, bumps, or other external forces. However, because the existing strap tightener is fixed by a ratchet, it cannot be released slowly when releasing the strap. If the fixed goods tilt, they will fall directly when the strap is loosened, which is dangerous and not conducive to use.

[0004] To address these issues, we provide a safety-type strap to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a safety strap, which solves the problem that existing straps lack a slow release function and may fall directly when the goods tilt during strap release, posing a high risk, by using a combination of a slow release component and a locking component.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a safety belt tensioner, comprising a belt tensioner body, a slow-release assembly, and a locking assembly. A mounting shell is fixedly connected to the front top of the belt tensioner body, and a fixing frame is movably connected to the rear side of the belt tensioner body. The slow-release assembly includes a bolt, the bottom of which penetrates the mounting shell and is movably connected to a pressure roller. Conveying rollers are movably connected to the front and rear sides of the inner cavity of the mounting shell. A cam is movably connected to the bottom of the left side of the inner cavity of the mounting shell, with a rubber plate at the top of the cam. A handle is fixedly connected to the right side of the cam, extending to the outside of the mounting shell on the right side. The locking assembly includes a screw, the right side of which penetrates to the inner cavity of the fixing frame. Threaded sleeves are threaded to both sides of the screw surface, and a push block is fixedly connected to the front side of the threaded sleeve. A pressure plate is provided between the two sides of the inner cavity of the fixing frame, and trapezoidal blocks are fixedly connected to both sides of the rear side of the pressure plate.

[0008] The present invention is further configured such that the top of the mounting shell is provided with a threaded hole for use with bolts, and both sides of the conveying roller are movably connected to the inner wall of the mounting shell through bearings. The threaded hole facilitates the use of bolts and allows the bolts to control the working height of the pressure roller.

[0009] The present invention is further configured such that friction grooves are provided on the front and rear sides of the top of the rubber plate for use with the conveyor roller, and a through hole is provided on the bottom right side of the mounting housing for use with the handle. The friction grooves can increase the contact area between the rubber plate and the conveyor roller, and the through hole can facilitate the handle to control the rotation of the cam.

[0010] The present invention is further configured such that sliding grooves are provided on the front and rear sides of both sides of the rubber plate, and guide rails are slidably connected to the inner cavity of the sliding grooves. The side of the guide rail away from the rubber plate is fixedly connected to the inner wall of the mounting shell. The sliding grooves and guide rails can limit the rubber plate so that it can move up and down smoothly.

[0011] The present invention is further configured such that the right side of the screw is movably connected to the inner wall of the fixing frame, and a knob is fixedly connected to the left side of the screw. The threads on both sides of the screw surface are opposite. The knob allows the operator to easily rotate the screw. The screw with opposite threads on its surface allows the two threaded sleeves to move simultaneously to the opposite side or the opposite side.

[0012] The present invention is further configured such that a limiting block is fixedly connected to the rear side of the threaded sleeve, and limiting grooves that cooperate with the limiting block are provided on both sides of the rear side of the inner cavity of the fixing frame. The limiting block and the limiting groove can limit the threaded sleeve and prevent it from rotating.

[0013] The present invention is further configured such that a clamping frame is fixedly connected to both sides of the front side of the pressure plate, and a baffle is fixedly connected to the top and bottom of the fixing frame. The clamping frame can position and fix the handle of the tightening device body, and the baffle can protect the internal components of the fixing frame.

[0014] The present invention is further configured such that tension springs are fixedly connected to both sides of the rear side of the pressure plate, and the rear side of the tension springs is fixedly connected to the inner wall of the fixing frame. The tension springs can reset the pressure plate when it is not squeezed, so that the pressure plate control frame no longer fixes the handle of the tensioner body.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model, through a slow-release component, enables the taut strap to be released slowly. During the strap release process, the handle is rotated, which controls the rotation of the cam. The rotating cam compresses the rubber plate, causing it to move upward and bring the conveyor roller into the inner cavity of the friction groove. By increasing the contact area between the rubber plate and the conveyor roller and utilizing the friction between them to reduce the rotation speed of the conveyor roller, the strap is released slowly. During the strap release process, the workers can observe the bound goods to prevent them from tilting and falling, thus improving safety.

[0017] 2. This utility model can fix the strapping device body through the locking component to prevent it from loosening during the transportation of goods. After closing the handle of the strapping device body, the fixing frame rotates to the top of the handle of the strapping device body. The screw drives the threaded sleeve and the push block to move. The push block cooperates with the trapezoidal block to move the pressure plate and the clamping frame downward. The movement of the clamping frame limits and fixes the handle of the strapping device body to prevent it from moving during the transportation of goods and causing the strap to loosen. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A perspective view of a safety belt fastener;

[0020] Figure 2 This is a top view of a safety belt fastener;

[0021] Figure 3 This is a cross-sectional view of the mounting housing in a safety belt fastener;

[0022] Figure 4 An exploded view of a slow-release component in a safety belt buckle;

[0023] Figure 5 This is a schematic diagram of a locking component in a safety belt.

[0024] In the attached diagram: 1. Tightening device body; 2. Mounting housing; 3. Fixing frame; 4. Slow release assembly; 41. Bolt; 42. Pressure roller; 43. Conveyor roller; 44. Cam; 45. Rubber plate; 46. Handle; 5. Locking assembly; 51. Screw; 52. Threaded sleeve; 53. Push block; 54. Pressure plate; 55. Trapezoidal block; 6. Knob; 7. Frame; 8. Tension spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figure 1-5 This utility model is a safety belt tensioner, including a belt tensioner body 1, a slow release component 4, and a locking component 5. A mounting shell 2 is fixedly connected to the front side of the top of the belt tensioner body 1, and a fixing frame 3 is movably connected to the rear side of the belt tensioner body 1. The slow release component 4 includes a bolt 41, the bottom of which passes through the mounting shell 2 and is movably connected to a pressure roller 42. Conveyor rollers 43 are movably connected to the front and rear sides of the inner cavity of the mounting shell 2. A cam 44 is movably connected to the bottom of the left side of the inner cavity of the mounting shell 2. A rubber plate 45 is provided on the top of the cam 44. A handle 46 is fixedly connected to the right side of the cam 44, and the right side of the handle 46 extends to the outside of the mounting shell 2. The locking component 5 includes a screw 51, the right side of which extends to the inner cavity of the fixing frame 3. Threaded sleeves 52 are threadedly connected to both sides of the surface of the screw 51. A push block 53 is fixedly connected to the front side of the threaded sleeve 52. A pressure plate 54 is provided between the two sides of the inner cavity of the fixing frame 3, and trapezoidal blocks 55 are fixedly connected to both sides of the rear side of the pressure plate 54.

[0028] Specifically: Bolt 41 allows workers to easily control the height of pressure roller 42, pressure roller 42 can squeeze with conveyor roller 43 to position the strap between pressure roller 42 and conveyor roller 43, cam 44 can squeeze rubber plate 45 to make rubber plate 45 fit with the surface of conveyor roller 43, and use friction to reduce the rotation speed of conveyor roller 43, handle 46 allows workers to easily turn cam 44, screw 51 can control threaded sleeve 52 and push block 53 to move, push block 53 can squeeze trapezoidal block 55 to control pressure plate 54 and clamp frame 7 to lock the handle of the tensioner body 1 downward, preventing the strap from loosening due to accidental opening of the handle of tensioner body 1 during cargo transportation.

[0029] Example 2

[0030] Please see Figure 1-5Based on Embodiment 1, the top of the mounting shell 2 is provided with a threaded hole for use with the bolt 41. Both sides of the conveying roller 43 are movably connected to the inner wall of the mounting shell 2 via bearings. The front and rear sides of the top of the rubber plate 45 are provided with friction grooves for use with the conveying roller 43. The bottom right side of the mounting shell 2 is provided with a through hole for use with the handle 46. The front and rear sides of both sides of the rubber plate 45 are provided with sliding grooves. The inner cavity of the sliding groove is slidably connected to a guide rail. The side of the guide rail away from the rubber plate 45 is fixed to the inner wall of the mounting shell 2. The screw 51 is movably connected to the inner wall of the fixing frame 3 on the right side, and a knob 6 is fixedly connected to the left side of the screw 51. The threads on both sides of the screw 51 are opposite. A limit block is fixedly connected to the rear side of the threaded sleeve 52. Limiting grooves that cooperate with the limit blocks are opened on both sides of the rear side of the inner cavity of the fixing frame 3. A retaining frame 7 is fixedly connected to both sides of the front side of the pressure plate 54. A baffle is fixedly connected to the top and bottom of the fixing frame 3. A tension spring 8 is fixedly connected to both sides of the rear side of the pressure plate 54. The rear side of the tension spring 8 is fixedly connected to the inner wall of the fixing frame 3.

[0031] Specifically: the threaded hole facilitates the use of bolt 41, allowing bolt 41 to control the working height of pressure roller 42; the friction groove increases the contact area between rubber plate 45 and conveyor roller 43; the through hole facilitates the rotation of cam 44 by handle 46; the slide and guide rail limit the rubber plate 45, allowing it to move smoothly up and down; the knob 6 facilitates the operator to rotate screw 51; the screw 51 with opposite surface threads allows two threaded sleeves 52 to move simultaneously to opposite sides; the limiting block and limiting groove limit the threaded sleeves 52 to prevent them from rotating; the clamp frame 7 positions and fixes the handle of the tensioner body 1; the baffle protects the internal components of the fixing frame 3; the tension spring 8 allows the pressure plate 54 to reset when not compressed, so that the pressure plate 54 controls the clamp frame 7 to no longer fix the handle of the tensioner body 1.

[0032] The working principle of this utility model is as follows: One end of the strap is passed between the pressure roller 42 and the conveyor roller 43, and then wound together with the other end of the strap into the tensioner body 1. The tensioner body 1 tightens the strap. After the strap is tightened, the handle of the tensioner body 1 is closed. The fixing frame 3 is rotated to the top of the handle of the tensioner body 1. The knob 6 is rotated. The knob 6, in conjunction with the screw 51, controls the movement of the threaded sleeve 52 and the push block 53. The movement of the push block 53 presses against the two trapezoidal blocks 55. After the trapezoidal blocks 55 are pressed, the pressure plate 54 and the locking frame 7 are moved. The pressure plate 54 and the locking frame 7 lock the handle of the tensioner body 1 to prevent it from moving during the transport of goods and causing the strap to loosen. When it is necessary to loosen the straps for unloading, flip the knob 6 so that the clamp frame 7 is no longer fixed to the handle of the strap tightener body 1. Turn the bolt 41 to control the pressure roller 42 to move downward. The pressure roller 42 and the conveyor roller 43 work together to clamp the strap. Then, the operator pushes the handle 46, which controls the cam 44 to rotate. The cam 44 rotates so that its convex side squeezes the rubber plate 45. The rubber plate 45 contacts the surface of the conveyor roller 43, and the friction reduces the rotation speed of the conveyor roller 43. The strap tightener body 1 is then loosened. During the slow loosening of the strap, the operator observes the goods to prevent them from tilting and falling, thus improving safety.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A safety-type tensioner, comprising a tensioner body (1), a slow-release assembly (4), and a locking assembly (5), characterized in that: The front side of the top of the tensioner body (1) is fixedly connected to the mounting shell (2), and the rear side of the tensioner body (1) is movably connected to the fixing bracket (3). The slow release assembly (4) includes a bolt (41), the bottom of which passes through the mounting shell (2) and is movably connected to a pressure roller (42). Conveying rollers (43) are movably connected to the front and rear sides of the inner cavity of the mounting shell (2). A cam (44) is movably connected to the bottom of the left side of the inner cavity of the mounting shell (2). A rubber plate (45) is provided on the top of the cam (44). A handle (46) is fixedly connected to the right side of the cam (44). The right side of the handle (46) extends through to the outside of the mounting shell (2). The locking assembly (5) includes a screw (51), the right side of which extends through the inner cavity of the fixing frame (3). Both sides of the surface of the screw (51) are threaded with threaded sleeves (52). A push block (53) is fixedly connected to the front side of the threaded sleeve (52). A pressure plate (54) is provided between the two sides of the inner cavity of the fixing frame (3). Trapezoidal blocks (55) are fixedly connected to both sides of the rear side of the pressure plate (54).

2. A safety belt fastener according to claim 1, characterized in that: The top of the mounting shell (2) is provided with a threaded hole for use with bolts (41), and both sides of the conveying roller (43) are movably connected to the inner wall of the mounting shell (2) through bearings.

3. A safety belt fastener according to claim 1, characterized in that: The rubber plate (45) has friction grooves on the front and rear sides of its top for use with the conveying roller (43), and the bottom right side of the mounting shell (2) has a through hole for use with the handle (46).

4. A safety belt fastener according to claim 1, characterized in that: The front and rear sides of the rubber plate (45) are provided with sliding grooves, and the inner cavity of the sliding groove is slidably connected to a guide rail. The side of the guide rail away from the rubber plate (45) is fixedly connected to the inner wall of the mounting shell (2).

5. A safety belt fastener according to claim 1, characterized in that: The right side of the screw (51) is movably connected to the inner wall of the fixing frame (3), and a knob (6) is fixedly connected to the left side of the screw (51). The threads on both sides of the surface of the screw (51) are opposite.

6. A safety belt fastener according to claim 1, characterized in that: The threaded sleeve (52) is fixedly connected to a limiting block on its rear side, and the two sides of the inner cavity of the fixing frame (3) are provided with limiting grooves that cooperate with the limiting block.

7. A safety belt fastener according to claim 1, characterized in that: Both sides of the front side of the pressure plate (54) are fixedly connected with a card frame (7), and the top and bottom of the fixing frame (3) are fixedly connected with a baffle.

8. A safety belt fastener according to claim 1, characterized in that: Both sides of the rear side of the pressure plate (54) are fixedly connected with tension springs (8), and the rear side of the tension springs (8) is fixedly connected to the inner wall of the fixing frame (3).

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