Improved retaining device

Abstract

The utility model relates to the technical field of retaining devices, in particular to an improved retaining device which comprises a base and a screw, two sides of the screw are in threaded connection with the base, and the bottom of the outer wall of the screw is in threaded connection with a threaded block. A material extrudes a pulley to enable a limiting rod to rotate, the limiting rod drives a round rod to rotate along a supporting base, the limiting rod drives a sliding block to move upwards, the sliding block drives a U-shaped base to move upwards, the U-shaped base drives a second magnetic block to move upwards along the outer wall of the sliding rod, and the distance between the second magnetic block and a first magnetic block is larger than the distance between the first magnetic block and the second magnetic block. Through the arrangement of the first magnetic blocks and the second magnetic blocks, the second magnetic blocks are always influenced by repulsive force between the first magnetic blocks, so that the limiting rods have the movement tendency of reverse rotation; the repulsive force influence between the first magnetic block and the second magnetic block enables the limiting rod to drive the pulley to reset, so that the material is limited, and the maintenance frequency is reduced in this way.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-retraction devices, in particular to an improved anti-retraction device. Background Art

[0002] The anti-retraction device is used to prevent the material from moving backward after the conveyor conveys the material to the specified position. It is especially suitable for situations where the clamp or conveying power unit needs to be retracted after the material is light in weight and clamped and conveyed.

[0003] However, during use, the existing anti-recoil device utilizes the elastic force of the spring after deformation to achieve the resetting of the swing arm to stop the material from retreating. However, due to the long-term continuous deformation and resetting of the spring, the elastic force of the spring is reduced, and over time the elasticity of the spring is invalid, resulting in the inability to reset the swing arm used to limit the material, thereby causing the anti-recoil device to be unable to limit the material, reducing the service life of the anti-recoil device and requiring regular maintenance of the anti-recoil device, increasing maintenance costs. In addition, during use, the existing anti-recoil device is in contact with the material for a long time, so that the roller on the top of the anti-recoil device is constantly rubbed against the material, causing the roller to be damaged. The roller needs to be replaced regularly, and the existing anti-recoil device is cumbersome and inconvenient to replace the roller. Utility Model Content

[0004] The utility model aims to solve the problems of short service life and high maintenance cost of the anti-recoil device and the complicated and inconvenient replacement of the roller of the anti-recoil device, and proposes an improved anti-recoil device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An improved anti-retraction device is designed, including a base and a screw rod, wherein both sides of the screw rod are threadedly connected to the base, the bottom of the outer wall of the screw rod is threadedly connected to the threaded block, the right side of the base is fixedly connected to a support seat, the middle parts of the support seats on both sides are rotatably connected to a round rod, the outer wall of the round rod is fixedly connected to a limiting rod, the top of the limiting rod is rotatably connected to a cross rod, a fixing structure is provided on the top of the cross rod, an auxiliary structure is provided on the left side of the base, and the left side of the outer wall of the cross rod is in contact with a pulley.

[0007] Preferably, the auxiliary structure includes a sliding rod, both ends of which are fixedly connected to the base, the top of the sliding rod is fixedly connected to the first magnetic block, the outer wall of the sliding rod is slidably connected to the second magnetic block, the right end of the second magnetic block is fixedly connected to the U-shaped seat, and both ends of the U-shaped seat are fixedly connected to the slider.

[0008] Preferably, the outer wall of the sliding block is slidably connected to the sliding groove of the limiting rod, the left side of the limiting rod is sleeved with the screw rod, and the bottom end of the limiting rod is tightly pressed against the threaded block.

[0009] Preferably, the outer wall of the second magnetic block is slidably connected to the base, and the bottom of the first magnetic block has the same magnetic pole as the top of the second magnetic block.

[0010] Preferably, the fixing structure includes a fixing screw, the outer wall of the fixing screw is threadedly connected to the cross bar, the left side of the fixing screw is rotatably connected to the T-bar, the left side of the T-bar is rotatably connected to the connecting rods on both sides through pins, the left side of the connecting rod is rotatably connected to the limit block through a pin, and the slide groove of the limit block is slidably connected to the sleeve block.

[0011] Preferably, both ends of the sleeve block are fixedly connected to the cross bar, and the outer side of the outer wall of the sleeve block is in contact with the pulley.

[0012] The improved backstop device proposed by the utility model has the beneficial effects that: the limiting rod rotates by squeezing the pulley with materials, the limiting rod drives the round rod to rotate along the supporting seat, the limiting rod drives the sliding block to move upward, the sliding block drives the U-shaped seat to move upward, the U-shaped seat drives the second magnetic block to move upward along the outer wall of the sliding rod, the spacing between the second magnetic block and the first magnetic block makes the second magnetic block always affected by the repulsive force between the first magnetic block so that the limiting rod has a movement tendency of reverse rotation, after the material is transported, the restriction between the pulley and the material is released, so that the repulsive force between the first magnetic block and the second magnetic block affects the limiting rod to drive the pulley to reset, so as to limit the material, thereby reducing the frequency of maintenance in this way, thereby reducing the maintenance cost;

[0013] The fixing screw is rotated along the T-bar and moves to the right along the thread groove of the cross bar at the same time, so that the T-bar moves to the right at the same time, the T-bar drives the connecting rod to rotate, and the connecting rod drives the limit block to move inward, so that the limit block and the pulley are released from fitting, thereby replacing the pulley, and then the fixing screw is rotated in the opposite direction to reset the limit block, thereby fixing the pulley, making the replacement of the pulley more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model;

[0016] Figure 3 for Figure 2 The structural diagram of A in the figure;

[0017] Figure 4 for Figure 2A partial side view structural diagram of .

[0018] In the figure: 1, base, 2, screw, 3, auxiliary structure, 301, slide rod, 302, first magnetic block, 303, second magnetic block, 304, U-shaped seat, 305, slider, 4, fixed structure, 4a1, fixed screw, 4a2, T-bar, 4a3, connecting rod, 4a4, limit block, 4a5, sleeve block, 4b1, positioning block, 5, round rod, 6, support seat, 7, limit rod, 8, pulley, 9, cross bar, 10, threaded block. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Embodiment 1:

[0021] See attached Figure 1-4 In the present embodiment, an improved backstop device includes a base 1 and a screw rod 2, both sides of the screw rod 2 are threadedly connected to the base 1, the bottom of the outer wall of the screw rod 2 is threadedly connected to the threaded block 10, the right side of the base 1 is fixedly connected to the support seat 6, the middle parts of the support seats 6 on both sides are rotatably connected to the round rod 5, the outer wall of the round rod 5 is fixedly connected to the limit rod 7, the top of the limit rod 7 is rotatably connected to the cross rod 9, a fixed structure 4 is provided on the top of the cross rod 9, an auxiliary structure 3 is provided on the left side of the base 1, and the left side of the outer wall of the cross rod 9 is in contact with the pulley 8.

[0022] The auxiliary structure 3 includes a slide bar 301, both ends of the slide bar 301 are fixedly connected to the base 1, the top of the slide bar 301 is fixedly connected to the first magnetic block 302, the outer wall of the slide bar 301 is slidably connected to the second magnetic block 303, and the right end of the second magnetic block 303 is fixedly connected to the U-shaped seat 304. During the material movement and transportation process, the material squeezes the pulley 8 to rotate the limit rod 7, the limit rod 7 drives the round rod 5 to rotate along the support seat 6, the limit rod 7 drives the slider 305 to move upward, the slider 305 drives the U-shaped seat 304 to move upward, and the U-shaped seat 304 drives the second magnetic block 303 to move upward along the outer wall of the slide bar 301, and the distance between the second magnetic block 303 and the first magnetic block 302 makes the second The magnetic block 303 is always affected by the repulsive force between the first magnetic block 302, so that the limiting rod 7 has a tendency to rotate in the opposite direction. After the material is transported, the restriction between the pulley 8 and the material is released, so that the repulsive force between the first magnetic block 302 and the second magnetic block 303 causes the limiting rod 7 to drive the pulley 8 to reset, thereby limiting the material. The two ends of the U-shaped seat 304 are fixedly connected to the slider 305, and the outer wall of the slider 305 is slidably connected to the slide groove of the limiting rod 7. The left side of the limiting rod 7 is sleeved with the screw 2, and the bottom end of the limiting rod 7 is tightly pressed against the threaded block 10. The outer wall of the second magnetic block 303 is slidably connected to the base 1, and the bottom of the first magnetic block 302 has the same magnetic pole as the top of the second magnetic block 303.

[0023] The fixing structure 4 includes a fixing screw 4a1, the outer wall of which is threadedly connected to the cross bar 9, and the left side of the fixing screw 4a1 is rotatably connected to the T-shaped rod 4a2. When the fixing screw 4a1 is rotated, the fixing screw 4a1 rotates along the T-shaped rod 4a2 and moves rightward along the thread groove of the cross bar 9, so that the T-shaped rod 4a2 moves rightward at the same time, and the T-shaped rod 4a2 drives the connecting rod 4a3 to rotate, and the connecting rod 4a3 drives the limit block 4a4 to move inward, so that the limit block 4a4 and the pulley 8 are The fit is released so that the pulley 8 can be replaced, and then the fixing screw 4a1 is rotated in the opposite direction to reset the limit block 4a4, so that the pulley 8 is fixed. The left side of the T-bar 4a2 is rotatably connected with the connecting rods 4a3 on both sides through the pins, and the left side of the connecting rod 4a3 is rotatably connected with the limit block 4a4 through the pins. The slide groove of the limit block 4a4 is slidably connected with the sleeve block 4a5. The two ends of the sleeve block 4a5 are fixedly connected with the cross bar 9, and the outer side of the outer wall of the sleeve block 4a5 fits with the pulley 8.

[0024] Working principle:

[0025] During the material movement and transportation process, the material squeezes the pulley 8 to rotate the limiting rod 7, and the limiting rod 7 drives the round rod 5 to rotate along the support seat 6, and the limiting rod 7 drives the slider 305 to move upward, and the slider 305 drives the U-shaped seat 304 to move upward, and the U-shaped seat 304 drives the second magnetic block 303 to move upward along the outer wall of the slide rod 301. The distance between the second magnetic block 303 and the first magnetic block 302 makes the second magnetic block 303 always affected by the repulsive force between the first magnetic block 302, so that the limiting rod 7 has a movement tendency of reverse rotation. After the material is transported, the pulley 8 and the material are released from the restriction, so that the repulsive force between the first magnetic block 302 and the second magnetic block 303 affects the limiting rod 7 to drive the pulley 8 to reset, so as to limit the material in this way. The frequency of maintenance is reduced, thereby reducing the maintenance cost;

[0026] The fixing screw 4a1 is rotated, and the fixing screw 4a1 rotates along the T-bar 4a2 and moves to the right along the thread groove of the cross bar 9, so that the T-bar 4a2 moves to the right at the same time, and the T-bar 4a2 drives the connecting rod 4a3 to rotate, and the connecting rod 4a3 drives the limit block 4a4 to move inward, so that the limit block 4a4 and the pulley 8 are released from fitting, so that the pulley 8 is replaced, and then the fixing screw 4a1 is rotated in the opposite direction to reset the limit block 4a4, so that the pulley 8 is fixed, making the replacement of the pulley more convenient.

[0027] Embodiment 2:

[0028] See attached Figure 1-4: In this embodiment, an improved anti-retraction device is provided, wherein the fixed structure 4 may further include a positioning block 4b1, the inner ends of the positioning blocks 4b1 are fixedly connected to the cross bar 9, the outer walls of the positioning blocks 4b1 are slidably connected to the pulley 8, and the limit blocks 4a4 can be more conveniently connected to the pulley 8 through the restrictions of the sliding grooves of the positioning blocks 4b1 and the pulley 8.

[0029] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An improved backstop device, comprising a base (1) and a screw (2), wherein both sides of the screw (2) are threadedly connected to the base (1), characterized in that: The bottom of the outer wall of the screw rod (2) is threadedly connected to the threaded block (10); the right side of the base (1) is fixedly connected to the support seat (6); the middle parts of the support seats (6) on both sides are rotatably connected to the round rod (5); the outer wall of the round rod (5) is fixedly connected to the limit rod (7); the top of the limit rod (7) is rotatably connected to the cross rod (9); a fixed structure (4) is provided on the top of the cross rod (9); an auxiliary structure (3) is provided on the left side of the base (1); and the left side of the outer wall of the cross rod (9) is in contact with the pulley (8).

2. An improved anti-retraction device according to claim 1, characterized in that: The auxiliary structure (3) comprises a sliding rod (301), both ends of the sliding rod (301) are fixedly connected to the base (1), the top of the sliding rod (301) is fixedly connected to the first magnetic block (302), the outer wall of the sliding rod (301) is slidably connected to the second magnetic block (303), the right end of the second magnetic block (303) is fixedly connected to the U-shaped seat (304), and both ends of the U-shaped seat (304) are fixedly connected to the sliding block (305).

3. An improved anti-retraction device according to claim 2, characterized in that: The outer wall of the slider (305) is slidably connected to the sliding groove of the limiting rod (7), the left side of the limiting rod (7) is sleeved with the screw rod (2), and the bottom end of the limiting rod (7) is tightly abutted against the threaded block (10).

4. An improved anti-retraction device according to claim 3, characterized in that: The outer wall of the second magnetic block (303) is slidably connected to the base (1), and the bottom of the first magnetic block (302) and the top of the second magnetic block (303) have the same magnetic pole.

5. The improved anti-retraction device according to claim 1, characterized in that: The fixing structure (4) comprises a fixing screw (4a1), the outer wall of which is threadedly connected to the cross bar (9), the left side of the fixing screw (4a1) is rotationally connected to the T-shaped rod (4a2), the left side of the T-shaped rod (4a2) is rotationally connected to connecting rods (4a3) on both sides via pins, the left side of the connecting rod (4a3) is rotationally connected to a limit block (4a4) via a pin, and the slide groove of the limit block (4a4) is slidably connected to the sleeve block (4a5).

6. An improved anti-retraction device according to claim 5, characterized in that: The two ends of the sleeve block (4a5) are fixedly connected to the cross bar (9), and the outer side of the outer wall of the sleeve block (4a5) is in contact with the pulley (8).

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