Lifting appliance tilting zero position detection device

Abstract

The utility model relates to the technical field of sling tilting zero position detection proximity switch fixing, in particular to a sling tilting zero position detection device which comprises a proximity switch installed in a long-strip-shaped groove in a first support. The first bracket is mounted on the second bracket; a lifting assembly matched with the first support is arranged on the second support. The proximity switch is installed in the long-strip-shaped groove of the first support, the position of the proximity switch can be conveniently adjusted, the detection requirements of different working conditions are met, and the detection precision is improved. The first support is installed on the second support, and the second support is provided with the lifting assembly matched with the first support, so that the height of the proximity switch can be flexibly adjusted, the tilting zero position of the lifting appliance is accurately detected under different height conditions, the accuracy and safety of tilting operation of the lifting appliance are guaranteed, and the adjusting process is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of fixing proximity switches for zero-position detection of lifting gear tilt, and in particular to a zero-position detection device for lifting gear tilt. Background Technology

[0002] The tilting mechanism of a tire-mounted gantry crane is a crucial device for adjusting the posture of the spreader. During container loading and unloading, due to irregular container placement or uneven terrain, the tilting mechanism is needed to adjust the angle of the spreader to match the angle of the container, ensuring accurate gripping and placement. Common drive methods for tire-mounted gantry crane tilting mechanisms include electric and hydraulic. Electric drives typically use a motor paired with a reducer, such as a TRIM motor, and can achieve smooth drive and precise position control through frequency converter control. Hydraulic drives rely on hydraulic pumps and cylinders, such as piston pumps and multi-functional cylinders, providing a larger driving torque to achieve the tilting movement of the spreader.

[0003] The detection and feedback devices in the tire crane's tilting mechanism, such as displacement sensors, are installed inside the hydraulic cylinder or at the end of the wire rope. These sensors detect the actual position and tilt angle of the spreader and feed the signal back to the control system for closed-loop control, ensuring the accuracy of the spreader's tilt. A proximity switch for detecting the zero tilt position is installed in the hydraulic cylinder. A long rod is attached to the end of the cylinder's piston rod, and a proximity element is located at the end of the long rod in conjunction with the proximity switch. The zero position is detected by opening and closing the proximity switch using this proximity element.

[0004] However, during routine loading and unloading operations, the zero-position sensor, or proximity switch, often shifts due to vibration, requiring timely adjustment. In existing technologies, the proximity switch is fixedly installed, making the adjustment process rather cumbersome. Utility Model Content

[0005] To address the issue that current zero-position sensors, i.e., proximity switches, often shift due to vibration, requiring timely adjustment, and that existing technologies involve fixed installations of proximity switches, making the adjustment process cumbersome, this invention provides a zero-position detection device for lifting glove tilt.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A zero-position detection device for spreader tilt includes a proximity switch mounted in an elongated slot on a first bracket; the first bracket is mounted on a second bracket; and a lifting assembly is mounted on the second bracket in conjunction with the first bracket. Mounting the proximity switch in the elongated slot of the first bracket facilitates adjustment of its position to meet the detection requirements of different working conditions and improve detection accuracy. The first bracket being mounted on the second bracket, with the lifting assembly on the second bracket cooperating with the first bracket, allows for flexible adjustment of the proximity switch's height. This enables accurate detection of the zero-position tilt of the spreader under different height conditions, ensuring the accuracy and safety of spreader tilting operations, and the adjustment process is simple.

[0008] Preferably, the first support has a U-shaped cross-section; a long groove is provided on one side wall of the first support; and the other side wall of the first support abuts against the second support. The U-shaped cross-section provides good structural strength and stability, better able to withstand forces from all directions, ensuring the overall reliability of the detection device. The long groove on one side wall facilitates the installation and position adjustment of the proximity switch, allowing for timely adjustment of the proximity switch position according to actual needs, ensuring detection effectiveness. The other side wall abutting against the second support not only achieves a stable connection between the two but also helps to evenly transmit and distribute forces, further enhancing the stability of the entire device and ensuring accurate detection of the zero tilt position of the spreader even under complex working conditions.

[0009] Preferably, the lifting assembly includes two sliders fixedly mounted on the bottom surface of the first bracket; a rectangular through hole is formed on the second bracket to accommodate the sliders; the sliders are slidably disposed within the rectangular through hole; a threaded hole is provided at the end of the slider; the length direction of the rectangular through hole is perpendicular to the length direction of the elongated groove. The two sliders fixed to the bottom surface of the first bracket engage with the rectangular through hole on the second bracket, allowing the sliders to slide within it. This design facilitates easy height adjustment of the first bracket. The threaded hole at the end of the slider facilitates the connection of bolts, allowing the first bracket to be fixed to the second bracket after height adjustment. Simultaneously, the length direction of the rectangular through hole being perpendicular to the length direction of the elongated groove ensures the proximity switch can be adjusted in both horizontal and vertical directions, guaranteeing accurate detection.

[0010] Preferably, the second bracket has an L-shaped cross-section; one end of the second bracket forms a fixing part for fixation, and the other end forms a mounting part for connecting to the first bracket; a rectangular through hole is formed in the mounting part. The L-shaped design of the second bracket allows the fixing part at one end to be easily and securely connected to external equipment or a mounting foundation, providing solid mounting support for the entire lifting device's tilt zero-position detection device and ensuring that the device will not shift or shake during operation. The mounting part at the other end connects to the first bracket, making the combination of the first and second brackets more reasonable and compact. The rectangular through hole in the mounting part cooperates with the slider on the bottom surface of the first bracket, enabling the adjustment of the first bracket's height. This design not only makes full use of space but also forms a stable support system structurally, complementing the concave design of the first bracket, further improving the reliability and stability of the entire detection device under complex working conditions, reducing the displacement of the proximity switch, and ensuring accurate detection.

[0011] Preferably, the distance between the outer side of the slider and the outer side of the first bracket is equal to the thickness of the mounting portion. This design allows the mounting portions of the slider, the first bracket, and the second bracket to fit tightly, optimizing space utilization, avoiding installation gaps caused by mismatched component dimensions, and ensuring a compact and stable device structure. During installation, this precise dimensional relationship facilitates rapid positioning and installation, improving assembly efficiency, while also ensuring the stability of the coordinated operation of all components during the operation of the entire testing device, providing a reliable structural foundation for accurately detecting the zero-position tilt of the lifting device.

[0012] Preferably, the lifting assembly further includes a plate; the plate is fixedly mounted on the outer wall of the mounting part; a screw is mounted on the plate; the screw is connected to an angle iron; the angle iron is connected to two sliders by bolts. The plate, fixed to the outer wall of the mounting part, provides a stable support foundation for the screw. The screw is connected to the angle iron, which in turn is connected to the two sliders by bolts, forming a transmission structure. By rotating the screw, the angle iron can be moved up and down, thereby synchronously adjusting the position of the two sliders within the rectangular through hole, achieving precise adjustment of the height of the first support. This design is not only easy to operate, but also ensures the stability and synchronization of the first support during the lifting process, further improving the convenience of adjusting the height of the proximity switch.

[0013] Preferably, a flat plate is fixedly mounted above the rectangular through hole; the flat plate has a threaded hole; the screw thread is threaded into the threaded hole; the lower end of the screw passes through an angle iron; two limiting blocks are fixedly mounted on the lower part of the screw; the two limiting blocks are respectively located on the upper and lower sides of one side wall of the angle iron. The flat plate, fixed above the rectangular through hole, provides a stable mounting surface for the entire adjustment structure. The threaded hole on the plate engages with the screw thread, allowing height adjustment to be achieved by rotating the screw, making operation simple and convenient. The lower end of the screw passes through the angle iron, and the two limiting blocks restrict the angle iron, ensuring that the angle iron is raised and lowered simultaneously with the rotation of the screw.

[0014] Preferably, a plate is fixedly positioned below a rectangular through hole; the plate has a through hole; a screw is positioned inside the through hole; two limiting blocks are fixedly positioned at the lower end of the screw; the two limiting blocks are respectively positioned on the upper and lower surfaces of the plate; the upper part of the screw is threaded onto an angle iron. The plate fixed below the rectangular through hole provides a stable mounting surface for the entire adjustment structure. After the screw passes through the through hole, the two limiting blocks restrict the axial displacement of the screw on the plate. The threaded connection between the screw and the angle iron ensures that while the screw rotates, it also drives the angle iron to rise and fall, achieving height adjustment. The operation is simple and convenient.

[0015] As can be seen from the above technical solutions, the advantages of this utility model include: the proximity switch is installed in the long slot of the first bracket, which facilitates the adjustment of the position of the proximity switch to meet the detection requirements of different working conditions and improve the detection accuracy; the first bracket is installed on the second bracket, and the second bracket is equipped with a lifting component that cooperates with the first bracket, so that the height of the proximity switch can be flexibly adjusted, accurately detecting the zero tilt position of the spreader under different height conditions, ensuring the accuracy and safety of the spreader tilting operation, and the adjustment process is simple. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of the first support in Embodiment 1 of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0021] Figure 5 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0022] Explanation of reference numerals in the attached diagram: 1-proximity switch, 2-first bracket, 3-second bracket, 4-slider, 5-plate, 6-screw, 7-angle iron, 8-limit block;

[0023] 201-Long groove; 301-Rectangular through hole; 302-Fixing part; 303-Mounting part; 401-Threaded hole. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] Example 1

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a zero-position detection device for lifting device tilt includes a proximity switch 1, which is installed in a long slot 201 on a first bracket 2; the first bracket 2 is installed on a second bracket 3; and a lifting assembly is provided on the second bracket 3 in conjunction with the first bracket 2.

[0027] The proximity switch 1 is installed in the long slot 201 of the first bracket 2, which facilitates the adjustment of the position of the proximity switch 1 to meet the detection requirements of different working conditions and improve the detection accuracy. The first bracket 2 is installed on the second bracket 3, and the second bracket 3 is equipped with a lifting component that cooperates with the first bracket 2, so that the height of the proximity switch 1 can be flexibly adjusted. Under different height conditions, it can ensure accurate detection of the zero position of the lifting device tilt, ensure the accuracy and safety of the lifting device tilting operation, and the adjustment process is simple.

[0028] The first support 2 has a U-shaped cross-section; a long groove 201 is provided on one side wall of the first support 2; the other side wall of the first support 2 abuts against the second support 3. The U-shaped cross-section of the first support 2 is composed of two vertical sides and a horizontal connecting part in the middle. This shape ensures the strength of the support and reduces weight and cost by reducing the amount of material used. On one side wall, a long groove 201 is provided along the length of the wall. The proximity switch 1 is installed in the long groove 201. By loosening and tightening the fastener, the position can be adjusted along the long groove 201 according to the actual working conditions. The other side wall of the first support 2 abuts tightly against the second support 3. During installation, this side wall fits against the second support 3, and the friction and other forces ensure that the first support 2 is stably installed on the second support 3. When the lifting component operates, the first support 2 can rise and fall synchronously with the second support 3 due to this abutment relationship, providing a reliable guarantee for the stable operation of the entire detection device.

[0029] The lifting assembly includes two sliders 4 fixedly mounted on the bottom surface of the first bracket 2; a rectangular through hole 301 is formed on the second bracket 3 to cooperate with the sliders 4; the sliders 4 are slidably disposed within the rectangular through hole 301; a threaded hole 401 is provided at the end of the slider 4; the length direction of the rectangular through hole 301 is perpendicular to the length direction of the elongated groove 201. The second bracket 3 has an L-shaped cross-section; one end of the second bracket 3 forms a fixing part 302 for fixing, and the other end forms a mounting part 303 for connecting the first bracket 2; the rectangular through hole 301 is formed on the mounting part 303. The distance between the outer side of the slider 4 and the outer side of the first bracket 2 is equal to the thickness of the mounting part 303.

[0030] The second bracket 3 has an L-shaped cross-section. One end is a fixing part 302 for secure installation on the main body of the equipment, while the other end, a mounting part 303, has a rectangular through hole 301. Two sliders 4 are fixed to the bottom surface of the first bracket 2, which fit into the rectangular through hole 301 of the mounting part 303 of the second bracket 3. The distance between the outer side of the slider 4 and the outer side of the first bracket 2 is the same as the thickness of the mounting part 303, ensuring a tight installation. The end of the slider 4 has a threaded hole 401, into which a bolt is installed. The bolt passes through the rectangular through hole 301 and is threaded into the threaded hole 401, securing its position. The length of the rectangular through hole 301 is perpendicular to the length of the long groove 201 on the first bracket 2. During operation, if the height of the first bracket 2 needs to be adjusted, the bolt in the threaded hole 401 at the end of the slider 4 can be loosened, allowing the slider 4 to slide within the rectangular through hole 301, raising or lowering the first bracket 2. Once in position, the bolt is tightened for fixation. This lifting component design not only provides a convenient way to adjust the height of the first support 2, but also, in conjunction with the long slot 201 on the first support 2 to adjust the position of the proximity switch 1, improves the adaptability of the lifting device to different working conditions. Moreover, through the close cooperation between the slider 4 and the rectangular through hole 301 and the reasonable installation size design, it ensures the stability of the first support 2 during the height adjustment process and after fixing, thus ensuring the continuous and reliable operation of the entire detection device.

[0031] Example 2

[0032] like Figure 4 As shown, based on Embodiment 1, the lifting assembly further includes a plate 5; the plate 5 is fixedly mounted on the outer wall of the mounting part 303; a screw 6 is provided on the plate 5; the screw 6 is connected to an angle iron 7; the angle iron 7 is connected to two sliders 4 by bolts. The plate 5 is fixedly mounted above the rectangular through hole 301; a threaded hole is provided on the plate 5; the screw 6 is threaded into the threaded hole; the lower end of the screw 6 passes through the angle iron 7; two limiting blocks 8 are fixedly mounted on the lower part of the screw 6; the two limiting blocks 8 are respectively located on the upper and lower sides of one side wall of the angle iron 7.

[0033] The newly added plate 5 of the lifting assembly is fixed to the outer wall of the mounting part 303 of the second bracket 3 and is located above the rectangular through hole 301. Its surface is provided with a threaded hole. A screw 6 is screwed into this threaded hole, with its lower end passing through an angle iron 7. Two limiting blocks 8 fixed to the lower part of the screw are located on the upper and lower sides of one side wall of the angle iron 7, connecting the angle iron 7 to the screw 6. The angle iron 7 is connected to two sliders 4 by bolts, and the sliders 4 are fitted into the rectangular through hole 301 on the mounting part 303. During operation, rotating the screw 6 causes it to move up and down due to the threaded connection between the screw 6 and the plate 5, causing the angle iron 7 to rise and fall synchronously. This, in turn, causes the sliders 4 connected to it to slide within the rectangular through hole 301 via bolts, thus achieving height adjustment of the first bracket 2. This structural design makes the height adjustment of the first support 2 more precise and controllable. By rotating the screw 6, compared with simply manually sliding the slider 4, more accurate height positioning can be achieved, meeting the stringent requirements of different testing scenarios for the height of the first support 2, further improving adaptability and testing accuracy, and ensuring the efficient and accurate conduct of zero-position detection of the lifting device tilt.

[0034] Example 3

[0035] like Figure 5 As shown, based on Embodiment 1, the lifting assembly further includes a plate 5; the plate 5 is fixedly mounted on the outer wall of the mounting part 303; a screw 6 is provided on the plate 5; the screw 6 is connected to an angle iron 7; the angle iron 7 is connected to two sliders 4 by bolts. The plate 5 is fixedly mounted below the rectangular through hole 301; the plate 5 has a through hole; the screw 6 is located inside the through hole; two limiting blocks 8 are fixedly mounted at the lower end of the screw 6; the two limiting blocks 8 are respectively located on the upper and lower surfaces of the plate 5; the upper part of the screw 6 is threaded onto the angle iron 7.

[0036] The plate 5 is securely mounted on the outer wall of the mounting part 303 of the second bracket 3, and is located below the rectangular through hole 301. The plate 5 has a through hole through which the screw 6 passes. Two limiting blocks 8, welded to its lower end, are located on the upper and lower surfaces of the plate 5 respectively, preventing the screw 6 from coming out of the through hole. The upper part of the screw 6 is connected to the angle iron 7 by threads. The angle iron 7 is connected to two sliders 4 by bolts. The sliders 4 move within the rectangular through hole 301 of the mounting part 303. During operation, rotating the screw 6, due to the threaded connection between the screw and the angle iron 7, converts the rotation of the screw into the vertical displacement of the angle iron 7. The angle iron 7 drives the sliders 4 to slide within the rectangular through hole 301, thereby adjusting the height of the first bracket 2. This design greatly improves the convenience and accuracy of height adjustment of the first support 2. Through the rotation of the screw 6, small and precise height changes can be achieved, meeting the stringent height requirements under different working conditions. This allows the entire lifting device to better adapt to the working environment and effectively ensures the efficient and accurate operation of lifting device tilt zero-position detection.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for detecting the zero position of the tilt of a spreader, comprising a proximity switch (1), characterised in that, The proximity switch (1) is installed in the long slot (201) on the first support (2); the first support (2) is installed on the second support (3); the second support (3) is provided with a lifting assembly matched with the first support (2).

2. The spreader tilt zero position detection device according to claim 1, characterized in that, The first support (2) is provided in a concave shape in section; the long slot (201) is provided on one side wall of the first support (2); the other side wall of the first support (2) abuts against the second support (3).

3. The spreader tilt zero position detection device of claim 2, wherein The lifting assembly comprises two sliding blocks (4) fixedly arranged on the bottom surface of the first support (2); the second support (3) is provided with a rectangular through hole (301) matched with the sliding block (4); the sliding block (4) is slidingly arranged in the rectangular through hole (301); the sliding block (4) is provided with a threaded hole (401) at the end; the length direction of the rectangular through hole (301) is perpendicular to the length direction of the long slot (201).

4. The spreader tilt zero position detection device of claim 3, wherein The second support (3) is provided in an L shape in section; one end of the second support (3) forms a fixed portion (302) for fixation, and the other end forms a mounting portion (303) for connecting the first support (2); the rectangular through hole (301) is arranged on the mounting portion (303).

5. The spreader tilt zero position detection device of claim 4, wherein, The distance between the outer side surface of the sliding block (4) and the outer side surface of the first support (2) is equal to the thickness of the mounting portion (303).

6. The spreader tilt zero position detection apparatus according to claim 4, wherein The lifting assembly further comprises a flat plate (5); the flat plate (5) is fixedly arranged on the outer wall of the mounting portion (303); the flat plate (5) is provided with a screw rod (6); the screw rod (6) is connected with an angle iron (7); the angle iron (7) is connected with the two sliding blocks (4) through bolts.

7. The spreader tilt zero position detection apparatus according to claim 5, wherein The flat plate (5) is fixedly arranged above the rectangular through hole (301); the flat plate (5) is provided with a threaded hole; the screw rod (6) is threadedly arranged in the threaded hole; the lower end of the screw rod (6) penetrates through the angle iron (7); the lower part of the screw rod (6) is fixedly provided with two limiting blocks (8); the two limiting blocks (8) are arranged on the upper and lower surfaces of one side wall of the angle iron (7), respectively.

8. The spreader tilt zero position detection apparatus according to claim 5, wherein The flat plate (5) is fixedly arranged below the rectangular through hole (301); the flat plate (5) is provided with a through hole; the screw rod (6) is arranged in the through hole; the lower end of the screw rod (6) is fixedly provided with two limiting blocks (8); the two limiting blocks (8) are arranged on the upper and lower surfaces of the flat plate (5), respectively; the upper part of the screw rod (6) is threadedly arranged on the angle iron (7). The flat plate (5) is fixedly arranged below the rectangular through hole (301); the flat plate (5) is provided with a through hole; the screw rod (6) is arranged in the through hole; the lower end of the screw rod (6) is fixedly provided with two limiting blocks (8); the two limiting blocks (8) are arranged on the upper and lower surfaces of the flat plate (5), respectively; the upper part of the screw rod (6) is threadedly arranged on the angle iron (7).

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