Crane control limiting device

Abstract

The utility model belongs to the technical field of cranes and discloses a crane control limiting device which comprises a controller, a mounting column is mounted at the top end of the controller, a control button is mounted in the center of the bottom end of the controller, a first U-shaped seat is mounted at the bottom end of the control button, a hanging ring is mounted at the bottom end of the first U-shaped seat, and a limiting column is mounted at the bottom end of the hanging ring. A pull rope is mounted at the bottom end of the limiting column, a first mounting plate is mounted on the side, away from the control button, of the bottom end of the controller, a limiting ring is mounted on the side, close to the limiting column, of the first mounting plate, a movable plate is rotationally mounted on the side, away from the limiting column, of the first mounting plate, and clamping mechanisms are mounted at the other end of the movable plate and the top end of the mounting column correspondingly. The outer side of the controller is sleeved with a protective shell. According to the crane control limiting device, the controller can be protected, rainwater is prevented from directly entering the controller, meanwhile, the controller is clamped on one side of the suspension arm, the service life of the crane control limiting device is prolonged, and the stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and more specifically, particularly relates to a crane control limit device. Background Art

[0002] The crane limiter is a safety protection device used to limit the operating range of the mechanism, including the rising limit position limiter and the falling limit position limiter. The rising to the top position limiter is used to limit the lifting height of the picking device. When the hoist is lifted to the upper limit position, the limiter can automatically cut off the power supply and stop the lifting mechanism to prevent the hook from continuing to rise and breaking the wire rope and causing a fall accident. When the picking device is lowered to the lowest position, the falling to the low position limiter can automatically cut off the power supply and stop the mechanism to ensure that the wire rope is wound on the drum for a safe number of not less than 2 circles.

[0003] Since there are usually many electronic components installed inside the limit device, when it is directly washed by rainwater, rainwater entering the limit device will cause an internal circuit short circuit, resulting in damage, and reducing the service life of the limit device. When the limit device is installed on the mounting column at the top of the crane boom for a long time, the movement and shaking of the pull rope can easily cause the limit device to loosen and shake. When the hoist is lifted to the upper limit position and the switch is lifted, the switch cannot be lifted in time due to the looseness and shaking of the limit device, and the power supply cannot be cut off in time, causing a safety accident. In addition, since the hoist will shake when lifting heavy objects, causing the pull rope to shake together, during the descent, the pull rope is likely to directly pull down the switch due to the shaking when it is close to the limit position, resulting in the power supply being cut off before the hoist reaches the limit position, affecting the working efficiency of the crane.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a crane control limit device is provided to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a crane control limit device, which is achieved by the following specific technical means:

[0006] A crane control limit device comprises a controller, a mounting column is installed at the top of the controller, a control button is installed at the center position of the bottom of the controller, a first U-shaped seat is installed at the bottom of the control button, a hanging ring is installed at the bottom of the first U-shaped seat, a limiting column is installed at the bottom of the hanging ring, a pull rope is installed at the bottom of the limiting column, a first mounting plate is installed at the bottom of the controller on the side away from the control button, a limiting ring is installed at the side close to the limiting column, a movable plate is rotatably installed at the side away from the limiting column on the first mounting plate, a clamping mechanism is installed at the other end of the movable plate and the top of the mounting column, a protective shell is provided on the outer side of the controller, and an opening is provided at the bottom end of the protective shell, and a pressing plate is installed at the bottom end of the inner side of the protective shell at a position close to the first U-shaped seat.

[0007] Furthermore, the size of the limiting ring matches the size of the limiting column.

[0008] Furthermore, the protective shell is slidably connected to the controller, and the length of the protective shell is greater than the length of the controller. A through hole is provided at the top of the protective shell, and the size of the through hole matches the size of the mounting column. A sealing strip is installed on the surrounding side of the through hole at a position that fits the mounting column.

[0009] Furthermore, a collision plate is installed on one side of the protective shell by bolts.

[0010] Furthermore, the clamping mechanism includes a second U-shaped seat, which is respectively mounted on the top of the mounting column and the top of the movable plate, and the second U-shaped seat located at the top of the movable plate is rotatably connected to the movable plate, a slide groove is provided at the bottom end of the inner side of the second U-shaped seat, and a pair of sliders are slidably mounted at both ends of the slide groove, a second mounting plate is mounted on the top of the pair of sliders, and a pair of arc clamps are symmetrically mounted on the top of the pair of second mounting plates.

[0011] Furthermore, a bidirectional screw is rotatably mounted on the inner side of the second U-shaped seat, and the bidirectional screw passes through the left and right sides of a pair of second mounting plates and is threadedly connected to the pair of second mounting plates.

[0012] Furthermore, a knob is installed on one side of the second U-shaped seat, and the knob is connected to the bidirectional screw.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The crane control limit device in the utility model, through the coordinated use of a protective shell, a through hole, a sealing strip and a mounting column, is convenient for protecting the electronic components inside the limit device, preventing rainwater from directly entering the limit device and causing damage to the electronic components, thereby extending the service life of the crane control limit device.

[0015] The crane control limit device in the utility model, through the coordinated use of the mounting column, the first mounting plate, the limit column, the limit ring, the movable plate and the clamping mechanism, is convenient for fixing the controller to the main body on one side of the boom, and the clamping positions of the two clamping mechanisms can be adjusted, so as to avoid the controller being unable to effectively limit the height of the sling due to looseness after long-term use, thereby improving the stability of the controller during use and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional explosion schematic diagram of the utility model.

[0018] Figure 3 It is a front cross-sectional schematic diagram of a partial structure of the utility model.

[0019] Figure 4 The utility model Figure 1 Enlarged schematic diagram of part A.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 1. Controller; 2. Mounting column; 3. Control button; 4. First U-shaped seat; 5. Hanging ring; 6. Limiting column; 7. Pull rope; 8. First mounting plate; 9. Limiting ring; 10. Movable plate; 11. Protective shell; 12. Pressing plate; 13. Through hole; 14. Collision plate; 15. Second U-shaped seat; 16. Slide groove; 17. Sliding block; 18. Second mounting plate; 19. Arc clamp; 20. Bidirectional screw; 21. Knob. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To Attachment Figure 4 As shown:

[0027] The utility model provides a crane control limit device, comprising a controller 1, a mounting column 2 is installed at the top of the controller 1, a control button 3 is installed at the center position of the bottom of the controller 1, a first U-shaped seat 4 is installed at the bottom of the control button 3, a hanging ring 5 is installed at the bottom of the first U-shaped seat 4, a limiting column 6 is installed at the bottom of the hanging ring 5, a pull rope 7 is installed at the bottom of the limiting column 6, a first mounting plate 8 is installed at the bottom of the controller 1 on a side away from the control button 3, a limiting ring 9 is installed at the side of the first mounting plate 8 close to the limiting column 6, a movable plate 10 is rotatably installed on the first mounting plate 8 on the side away from the limiting column 6, a clamping mechanism is installed at the other end of the movable plate 10 and the top of the mounting column 2, a protective shell 11 is sleeved on the outer side of the controller 1, and the bottom end of the protective shell 11 is provided with an opening, and a pressing plate 12 is installed at the bottom end of the inner side of the protective shell 11 at a position close to the first U-shaped seat 4.

[0028] Among them, the size of the limit ring 9 matches the size of the limit column 6, and the limit ring 9 is arranged on the side of the limit column 6. When the suspended heavy object shakes and drives the pull rope 7 to shake, the limit ring 9 can reduce the amplitude of the limit column 6 following the shaking of the pull rope 7, thereby avoiding directly pulling the control button 3 due to the shaking of the pull rope 7 during the descent process.

[0029] Among them, the protective shell 11 is slidably connected to the controller 1, and the length of the protective shell 11 is greater than the length of the controller 1. A through hole 13 is provided at the top of the protective shell 11, and the size of the through hole 13 matches the size of the mounting column 2. A sealing strip is installed on the surrounding side of the through hole 13 at a position that fits the mounting column 2. When the sling drives the heavy object to rise, the sling touches the protective shell 11, driving the protective shell 11 to slide and rise on the outside of the controller 1, so that the pressing plate 12 can squeeze the control button 3 to cut off the circuit. At the same time, the sealing strip can prevent rainwater from directly entering the inside of the protective shell 11.

[0030] A collision plate 14 is installed on one side of the protective shell 11 through bolts. When the protrusion on the lifting device touches the collision plate 14 , the protective shell 11 is driven to slide and rise on the outer side of the controller 1 .

[0031] Among them, the clamping mechanism includes a second U-shaped seat 15, which is respectively mounted on the top of the mounting column 2 and the top of the movable plate 10, and the second U-shaped seat 15 located at the top of the movable plate 10 is rotatably connected to the movable plate 10, and a slide groove 16 is provided at the bottom end of the inner side of the second U-shaped seat 15, and a pair of sliders 17 are slidably mounted at both ends of the slide groove 16, and a second mounting plate 18 is mounted on the top of the pair of sliders 17, and a pair of arc clamps 19 are symmetrically mounted on the top of the pair of second mounting plates 18. When the pair of sliders 17 slide relatively, the second mounting plate 18 drives the pair of arc clamps 19 to move relatively, so that the column body for mounting the controller 1 on one side of the boom is clamped in the middle, so as to fix the boom. Since the two clamping mechanisms and the bottom end of the controller 1 are triangular as a whole, the stability of the controller 1 can be improved.

[0032] Among them, a bidirectional screw 20 is rotatably installed on the inner side of the second U-shaped seat 15, and the bidirectional screw 20 passes through the left and right sides of a pair of second mounting plates 18 and is threadedly connected with a pair of second mounting plates 18. Through the rotation of the bidirectional screw 20, the slider 17 is limited by the slide groove 16, and the pair of sliders 17 move relative to each other, driving the arc clamp 19 to move relative to each other.

[0033] A knob 21 is installed on one side of the second U-shaped seat 15 , and the knob 21 is connected to the bidirectional screw rod 20 to facilitate the rotation of the bidirectional screw rod 20 .

[0034] Working principle of this embodiment: When installing the controller 1, the staff first aligns the pair of arc-shaped clamps 19 at the top of the installation column 2 with the position of the column on one side of the boom for installing the controller 1, rotates the knob 21, drives the bidirectional screw 20 to rotate, and because the slider 17 is limited by the slide groove 16, the pair of sliders 17 move relative to each other, driving the arc-shaped clamps 19 to move relative to each other, so that the arc-shaped clamps 19 clamp the column in the middle, and realize the preliminary fixation of the controller 1. At this time, adjust the position of the movable plate 10, align the pair of arc-shaped clamps 19 at the top of the movable plate 10 with the position of the column, and rotate The bidirectional screw 20 drives a pair of arc-shaped clamps 19 to slide. Since the size of the limit ring 9 matches the size of the limit column 6, when the suspended heavy object shakes and drives the pull rope 7 to shake, the limit ring 9 can reduce the amplitude of the limit column 6 following the shaking of the pull rope 7, thereby avoiding the switch being directly pulled due to the shaking of the pull rope 7 during the descent. When the sling rises, the protrusion on the sling touches the collision plate 14, driving the protective shell 11 to slide and rise on the outside of the controller 1, so that the pressing plate 12 can squeeze the control button 3 to cut off the circuit. At the same time, the sealing strip can prevent rainwater from directly entering the protective shell 11.

[0035] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A crane control limit device, comprising a controller (1), characterized in that: The top of the controller (1) is provided with a mounting column (2), a control button (3) is provided at the center of the bottom of the controller (1), a first U-shaped seat (4) is provided at the bottom of the control button (3), a hanging ring (5) is provided at the bottom of the first U-shaped seat (4), a limiting column (6) is provided at the bottom of the hanging ring (5), a pull rope (7) is provided at the bottom of the limiting column (6), a first mounting plate (8) is provided at the bottom of the controller (1) on a side away from the control button (3), and the first mounting plate (8) is provided at the bottom of the controller (1). A limiting ring (9) is installed on the side of the mounting plate (8) close to the limiting column (6); a movable plate (10) is rotatably installed on the side of the first mounting plate (8) away from the limiting column (6); a clamping mechanism is installed on the other end of the movable plate (10) and the top end of the mounting column (2); a protective shell (11) is provided on the outer side of the controller (1), and an opening is provided at the bottom end of the protective shell (11); a pressing plate (12) is installed on the bottom end of the inner side of the protective shell (11) at a position close to the first U-shaped seat (4).

2. The crane control limit device according to claim 1, characterized in that: The size of the limiting ring (9) matches the size of the limiting column (6).

3. The crane control limit device according to claim 1, characterized in that: The protective shell (11) is slidably connected to the controller (1), and the length of the protective shell (11) is greater than the length of the controller (1). A through hole (13) is provided at the top of the protective shell (11), and the size of the through hole (13) matches the size of the mounting column (2). A sealing strip is installed on the circumference of the through hole (13) at a position where it fits the mounting column (2).

4. The crane control limit device according to claim 1, characterized in that: A collision plate (14) is mounted on one side of the protective shell (11) via bolts.

5. The crane control limit device according to claim 1, characterized in that: The clamping mechanism comprises a second U-shaped seat (15), the second U-shaped seat (15) being respectively mounted on the top of the mounting column (2) and the top of the movable plate (10), and the second U-shaped seat (15) located at the top of the movable plate (10) is rotatably connected to the movable plate (10), a slide groove (16) is provided at the bottom end of the inner side of the second U-shaped seat (15), a pair of sliders (17) are slidably mounted at both ends of the slide groove (16), a second mounting plate (18) is mounted on the top of the pair of sliders (17), and a pair of arc clamps (19) are symmetrically mounted on the top of the pair of second mounting plates (18).

6. The crane control limit device according to claim 5, characterized in that: A bidirectional screw (20) is rotatably mounted on the inner side of the second U-shaped seat (15), and the bidirectional screw (20) passes through the left and right sides of a pair of second mounting plates (18) and is threadedly connected to the pair of second mounting plates (18).

7. The crane control limit device according to claim 6, characterized in that: A knob (21) is installed on one side of the second U-shaped seat (15), and the knob (21) is connected to the bidirectional screw rod (20).

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