Gantry crane engine cable one-way locking device

Abstract

The utility model relates to a gantry crane engine cable one-way locking device, and belongs to the technical field of cable locking. The device comprises a fixing plate arranged on the gantry crane, two sets of locking plates rotationally arranged on the fixing plate and a locking elastic piece connected with the locking plates and the fixing plate, a locking gap for arranging a cable is formed between the two sets of locking plates, and the cable abuts against the two sets of locking plates. The cable is provided with a reserved section between the gantry crane and the engine, the locking elastic piece is located on the side, facing the reserved section, of the locking plate, the locking elastic piece enables the locking plate to have the trend of rotating away from the reserved section, and when the cable is subjected to the tension of the reserved section, the cable drives the locking plate to rotate, so that the locking gap is gradually reduced. The application has the effect of reducing potential safety hazards caused by cable elongation.

Description

A one-way locking device for engine cables of gantry cranes Technical Field

[0001] This application relates to the field of cable locking technology, and in particular to a one-way locking device for a gantry crane engine cable. Background Technology

[0002] A gantry crane (also known as a portal crane) is a lifting device supported by a portal frame. It mainly consists of a main beam, legs, lower crossbeam, hoisting mechanism, traveling mechanism, and electrical system.

[0003] When using a mobile engine to tow a machine, a certain length of cable needs to be reserved between the gantry crane and the engine to offset the distance of the engine's back-and-forth swaying. However, the cable is often stretched and dragged during the towing process, and the stretched cable is also easily damaged and leaked by the engine or tires. Therefore, a dedicated person needs to accompany the engine throughout the process, which poses a significant safety hazard. Summary of the Invention

[0004] To reduce the safety hazards caused by cable elongation, this application provides a one-way locking device for the engine cable of a gantry crane.

[0005] The unidirectional locking device for engine cables of gantry cranes provided in this application adopts the following technical solution:

[0006] A one-way locking device for a gantry crane engine cable includes a fixed plate disposed on the gantry crane, two sets of locking plates rotatably disposed on the fixed plate, and a locking elastic member connecting the locking plates and the fixed plate. A locking gap for cable arrangement is formed between the two sets of locking plates. The cable abuts against the two sets of locking plates. A reserved section is provided for the cable between the gantry crane and the engine. The locking elastic member is located on the side of the locking plate facing the reserved section. The locking elastic member causes the locking plate to have a tendency to rotate away from the reserved section. When the cable is subjected to tension in the reserved section, the cable drives the locking plate to rotate, causing the locking gap to gradually narrow.

[0007] By adopting the above technical solution, the cooperation of the fixing plate, locking plate and locking elastic element can effectively alleviate the excessive stretching or dragging of the cable when it is subjected to tension. The locking elastic element makes the locking plate tend to rotate away from the reserved section. When the cable is subjected to tension of the reserved section, the cable drives the locking plate to rotate, so that the locking gap gradually narrows, thereby realizing the one-way locking function of the cable, avoiding the cable from being excessively stretched or falling out of the fixed position due to external tension. When the cable is pulled in the opposite direction, the locking plate will not obstruct the cable.

[0008] Optionally, the locking plate is provided with an arc-shaped plate for abutting the cable, the arc surface of the arc-shaped plate abutting the outside of the cable.

[0009] By adopting the above technical solution, the arc-shaped plate can be matched with the outer shape of the cable, increasing the contact area with the cable, thereby reducing local pressure and preventing damage to the cable surface due to uneven force.

[0010] Optionally, the locking plate has a rotating through hole that passes through both end faces, the locking plate has a rotating post for passing through the rotating through hole, and the fixing plate has a threaded hole that is threaded to the rotating post.

[0011] By adopting the above technical solution, the locking plate achieves a rotatable connection with the fixed plate through a rotating through hole and a rotating column. The rotating column engages with the threaded hole on the fixed plate, making the connection between the locking plate and the fixed plate relatively stable. In addition, the threaded engagement method facilitates disassembly and maintenance, improving the practicality and reliability of the device.

[0012] Optionally, the arc-shaped plate is detachably mounted on the locking plate, the arc-shaped plate has an abutting surface on the side facing the locking plate, and the arc-shaped plate has an installation groove on the abutting surface, and the locking plate has an installation rail that slides and cooperates with the installation groove.

[0013] By adopting the above technical solution, the disassembly and assembly structure between the arc-shaped plate and the locking plate allows for easy replacement and maintenance of the arc-shaped plate, improving the practicality and flexibility of the device. The sliding fit design of the mounting groove and mounting rail ensures the stability and reliability of the arc-shaped plate installation, while facilitating quick assembly and position adjustment, thus improving operational efficiency.

[0014] Optionally, the arc-shaped plate is provided with a positioning abutment surface at one end of the mounting groove.

[0015] By adopting the above technical solution, setting a positioning abutment surface at one end of the installation groove on the curved plate can effectively limit the sliding range of the curved plate within the installation groove, ensuring the accuracy of the curved plate's installation position. This is combined with a locking plate.

[0016] Optionally, the locking plate has multiple mounting slots spaced apart on the mounting slide rail, and the locking plate is provided with a ball-head plunger in the mounting slot. The arc-shaped plate is provided with a locking slot on the inner wall of the mounting slot for the ball-head plunger to be inserted.

[0017] By adopting the above technical solution, the curved plate can be quickly positioned and locked onto the locking plate during installation, which improves assembly efficiency and makes the connection between the curved plate and the locking plate more stable and easier to disassemble and assemble.

[0018] Optionally, the arc-shaped plate is provided with an arc-shaped friction pad on the arc surface for the cable to abut against.

[0019] By adopting the above technical solution, the arc-shaped friction pad on the arc plate can increase the friction between the cable and the cable, effectively preventing the cable from sliding or displacing within the locking gap, thereby further improving the stability of the cable fixation.

[0020] Optionally, the fixing plate is provided with an arc-shaped positioning groove for cable arrangement in the locking gap.

[0021] By adopting the above technical solution, the fixed plate can be initially positioned by setting an arc-shaped positioning groove in the locking gap, which can prevent the cable from shifting or shaking in the locking gap, thereby improving the stability of the cable arrangement.

[0022] Optionally, a positioning arc plate is provided on the locking plate along the length of the cable, and the positioning arc plate is rotatably mounted on the locking plate.

[0023] By adopting the above technical solution, the positioning arc plate can further position and protect the cable, preventing the cable from shifting in the locking gap.

[0024] Optionally, the fixing plate has a movable slide groove, and a movable slider is slidably installed in the movable slide groove, and the threaded hole is provided in the movable slider.

[0025] By adopting the above technical solution, a movable groove is opened on the fixed plate, and a movable slider is slidably installed on it, so that the threaded hole can be adjusted in position within the movable groove along with the movable slider. This design can flexibly adjust the relative position between the locking plate and the fixed plate, thereby adapting to the needs of cables of different diameters and improving the versatility of the device.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By setting a locking plate and locking elastic element, when the cable is subjected to tension of the reserved section, the locking plate rotates to reduce the locking gap, thereby effectively preventing the cable from being damaged due to excessive stretching and improving the safety of the cable during the towing process;

[0028] 2. The locking elastic element makes the locking plate tend to rotate away from the reserved section, which can automatically adjust the locking force and prevent the cable from being excessively squeezed;

[0029] 3. By setting a movable slider, this application allows the threaded hole to adjust its position within the movable groove, thereby flexibly adjusting the relative position between the locking plate and the fixed plate to accommodate cables of different diameters. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the structure installed on the gantry crane in Embodiment 1.

[0031] Figure 2 is a schematic diagram of the overall structure of Embodiment 1.

[0032] Figure 3 is a schematic diagram of the exploded structure of Example 1.

[0033] Figure 4 is a schematic diagram of the exploded structure of Example 2.

[0034] Figure 5 is a cross-sectional schematic diagram of Example 2.

[0035] Figure 6 is a cross-sectional schematic diagram of the fixing plate of the movable slider in Embodiment 2.

[0036] Explanation of reference numerals in the attached drawings: 1. Fixed plate; 11. Threaded hole; 12. Arc-shaped positioning groove; 13. Positioning arc plate; 14. Moving slide; 15. Moving slider; 151. Limiting part; 152. Fitting part; 153. Moving bolt; 16. Second screw hole; 2. Locking plate; 21. Locking gap; 22. Rotating through hole; 23. Mounting slide rail; 231. Mounting groove; 232. Ball head plunger; 3. Locking elastic element; 4. Cable; 41. Reserved section; 5. Arc-shaped plate; 51. Mounting slide; 511. Locking groove; 52. Positioning abutment surface; 53. Arc-shaped friction pad; 6. Rotating column; 7. Gantry crane; 8. Bearing component. Detailed Implementation

[0037] The present application will be further described in detail below with reference to Figures 1-6.

[0038] This application discloses a one-way locking device for the engine cable of a gantry crane.

[0039] Example 1:

[0040] Referring to Figures 1 and 2, the gantry crane engine cable one-way locking device includes a fixed plate 1, two sets of locking plates 2 rotatably mounted on the fixed plate 1, and a locking elastic element 3 connecting the locking plates 2 and the fixed plate 1.

[0041] The fixing plate 1 is a rectangular steel plate, which is fixed to the grid plate of the gantry crane 7 by bolts or welding. Both sets of locking plates 2 are right-angled triangular steel plates, and are symmetrically arranged along the center line of the length direction of the fixing plate 1. A locking gap 21 is formed between the two sets of locking plates 2 for the cable 4 to be arranged. The cable 4 has a reserved section 41 between the gantry crane 7 and the engine to counteract the impact of engine vibration on the gantry crane 7.

[0042] The locking elastic element 3 is a compression spring, one end of which is fixed to the right-angled side of the locking plate 2, and the other end is fixed to the fixing plate 1 by a rectangular plate. The locking elastic element 3 is located on the side of the locking plate 2 near the reserved section 41 of the cable 4, and on the side away from the rotation center of the locking plate 2. The locking elastic element 3 causes the locking plate 2 to tend to rotate toward the reserved section 41.

[0043] The inclined sides of the two sets of locking plates 2 correspond to each other, and each inclined side is equipped with an arc-shaped plate 5 for pressing the cable 4. The arc surface of the arc-shaped plate 5 faces the cable 4. Compared with the contact of the flat surface, the contact area between the arc surface and the cable 4 can increase the contact area with the cable 4, thereby reducing local pressure and preventing damage to the surface of the cable 4 due to uneven force.

[0044] Referring to Figure 3, the locking plate 2 has a rotating through hole 22 extending through both end faces, and the fixing plate 1 has a threaded hole 11 corresponding to the rotating through hole 22. The locking device also includes a rotating column 6 and a bearing 8. The rotating column 6 passes through the rotating through hole 22 and is threaded into the threaded hole 11. The rotating column 6 and the rotating through hole 22 are rotatably engaged. The bottom of the locking plate 2 has a recess for arranging the bearing 8, so that the bottom of the locking plate 2 and the top of the fixing plate 1 fit together.

[0045] The implementation principle of the unidirectional locking device for the engine cable of a gantry crane in this embodiment is as follows: Under normal conditions, the locking plate 2 abuts against the side wall of the cable 4 under the action of the locking elastic element 3; when the cable 4 is subjected to tension on one side of the reserved section 41, the cable 4 tends to move towards the reserved section 41, and the cable 4 and the arc plate 5 abut against each other, so that the arc plate 5 is also subjected to frictional force in the same direction. The two sets of locking plates 2 rotate towards each other, realizing automatic locking of the cable 4; when the cable 4 is subjected to tension on one side of the gantry crane 7, the arc plate 5 rotates towards each other under the sliding friction of the cable 4, so that the locking gap 21 gradually increases, making it easier for the operator to retract the cable 4 and shorten the length of the reserved section 41.

[0046] Example 2:

[0047] Referring to Figures 4 and 5, the arc-shaped plate 5 is detachably mounted on the locking plate 2, and the arc-shaped plate 5 has an abutment surface on the inclined side facing the locking plate 2. The arc-shaped plate 5 has a mounting groove 51 on the abutment surface, which extends along the length of the abutment surface. One end of the mounting groove 51 penetrates the outer arc surface of the arc-shaped plate 5, and the other end of the mounting groove 51 forms a positioning abutment surface 52.

[0048] The locking plate 2 has an installation slide rail 23 on its inclined side that slides and engages with the installation slide groove 51. In this embodiment, the installation slide rail 23 has a T-shaped cross-section, and the installation slide groove 51 and the installation slide rail 23 are compatible. Multiple installation grooves 231 are evenly spaced along the length of the side wall of the installation slide rail 23, and the locking plate 2 has a ball-head plunger 232 within each of the installation grooves 231. The ball-head plunger 232 includes a plunger housing, a plunger ball, and a plunger spring connecting the plunger ball and the inner bottom wall of the plunger housing. The plunger housing and the installation groove 231 are inserted and fixed together.

[0049] The arc-shaped plate 5 has locking grooves 511 on the inner wall of the mounting groove 51, which correspond one-to-one with the plunger ball heads. The locking grooves 511 and the plunger ball heads cooperate to improve the locking stability of the arc-shaped plate 5 and the locking plate 2. In order to further improve the friction between the cable 4 and the arc-shaped plate 5, an arc-shaped friction pad 53 is provided on the outer arc surface of the arc-shaped plate 5. The arc-shaped friction pad 53 can be fixed to the arc-shaped plate 5 by embedding or glue.

[0050] To improve the stability of the cable 4, the fixing plate 1 is also provided with an arc-shaped positioning groove 12 and a positioning arc piece 13. The arc-shaped positioning groove 12 corresponds to the locking gap 21 and is used for positioning the cable 4, which can increase the contact area between the cable 4 and the fixing plate 1. The positioning arc piece 13 is rotatably installed at both ends of the arc-shaped positioning groove 12. It is rotatably installed through a rotating shaft, which can further position the cable 4 placed in the arc-shaped positioning groove 12 and reduce the probability of radial swaying of the cable 4.

[0051] Referring to Figure 6, in order to adapt the locking device of this application to cables 4 of different specifications, a sliding groove 14 penetrating both end faces is also provided on the fixing plate 1. A sliding block 15 is slidably mounted on the fixing plate 1 in the sliding groove 14. The sliding block 15 is a T-shaped slider, which has a limiting part 151 arranged in the sliding groove 14 and a fitting part 152 abutting against the bottom of the fixing plate 1. The top of the limiting part 151 is flush with the top surface of the fixing plate 1, and a threaded hole 11 is provided on the top of the limiting part 151.

[0052] The bottom of the fixed plate 1 has multiple sets of second screw holes 16 on both sides of the movable slide groove 14. The second screw holes 16 are evenly spaced along the length of the movable slide groove 14. The mating part 152 is provided with movable bolts 153 for fixing in cooperation with the second screw holes 16. The rectangular plate for fixing the end of the locking elastic member 3 is also slidably installed on the top of the fixed plate 1, and its fixing method is the same as that of the movable slider 15.

[0053] The implementation principle of the one-way locking device for the engine cable of a gantry crane in this embodiment is as follows: According to the diameter specification of the cable 4, the movable slider 15 is adjusted so that the locking gap 21 under normal conditions matches the diameter of the cable 4. The cable 4 is arranged in the arc-shaped positioning groove 12 of the fixed plate 1, and then the arc-shaped positioning plate is rotated so that the arc-shaped positioning plate plays a limiting role on the cable 4, reducing the probability of horizontal swaying of the cable 4.

[0054] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gantry crane engine cable one-way locking device, characterized in that, The system includes a fixed plate (1) mounted on the gantry crane (7), two sets of locking plates (2) rotatably mounted on the fixed plate (1), and a locking elastic member (3) connecting the locking plates (2) and the fixed plate (1). A locking gap (21) for arranging a cable (4) is formed between the two sets of locking plates (2). The cable (4) abuts against the two sets of locking plates (2). A reserved section (41) is provided between the gantry crane (7) and the engine. The locking elastic member (3) is located on the side of the locking plate (2) facing the reserved section (41). The locking elastic member (3) causes the locking plate (2) to have a tendency to rotate away from the reserved section (41). When the cable (4) is subjected to the tension of the reserved section (41), the cable (4) drives the locking plate (2) to rotate, causing the locking gap (21) to gradually shrink.

2. A gantry crane engine cable one-way locking device according to claim 1, characterized in that, The locking plate (2) is provided with an arc-shaped plate (5) for abutting the cable (4), and the arc surface of the arc plate (5) abuts the outside of the cable (4).

3. A gantry crane engine cable one-way locking device according to claim 2, characterized in that, The locking plate (2) has a rotating through hole (22) that passes through both end faces. The locking plate (2) is provided with a rotating column (6) for passing through the rotating through hole (22) and a bearing (8) sleeved on the rotating column (6). The fixing plate (1) has a threaded hole (11) that is threaded to the rotating column (6).

4. A one-way locking device for a gantry crane engine cable according to claim 3, characterized in that, The arc plate (5) is detachably mounted on the locking plate (2). The arc plate (5) has an abutting surface on the side facing the locking plate (2), and the arc plate (5) has an installation groove (51) on the abutting surface. The locking plate (2) has an installation slide rail (23) that slides and cooperates with the installation groove (51).

5. A one-way locking device for a gantry crane engine cable according to claim 4, characterized in that, The arc-shaped plate (5) has a positioning abutment surface (52) at one end of the mounting groove (51).

6. A one-way locking device for a gantry crane engine cable according to claim 5, characterized in that, The locking plate (2) has multiple mounting slots (231) spaced apart on the mounting slide rail (23). The locking plate (2) has a ball-head plunger (232) in the mounting slot (231). The arc plate (5) has a locking slot (511) on the inner wall of the mounting slot (231) for the ball-head plunger (232) to be inserted.

7. A one-way locking device for a gantry crane engine cable according to claim 4, characterized in that, The arc plate (5) has an arc-shaped friction pad (53) on its arc surface for the cable (4) to abut.

8. A one-way locking device for a gantry crane engine cable according to claim 4, characterized in that, The fixing plate (1) is provided with an arc-shaped positioning groove (12) for arranging the cable (4) in the locking gap (21).

9. A one-way locking device for a gantry crane engine cable according to claim 4, characterized in that, The fixing plate (1) is provided with a positioning arc plate (13) along the length direction of the cable (4), and the positioning arc plate (13) is rotatably installed on the locking plate (2).

10. A one-way locking device for a gantry crane engine cable according to claim 4, characterized in that, The fixed plate (1) has a movable slide groove (14), and a movable slider (15) is slidably installed in the movable slide groove (14), and the threaded hole (11) is provided in the movable slider (15).

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