Traveling crane cable-stayed prevention mechanism with cable-stayed alarm function

Abstract

The utility model discloses a travelling crane cable-stayed prevention mechanism with a cable-stayed alarm function, and relates to the technical field of cable-stayed prevention mechanisms. Four corresponding sensing assemblies are mounted on the lower side of the connecting shell; the supporting assembly comprises fixing plates, sliding rods, a connecting frame, guide wheels, springs and extrusion heads, the four corresponding fixing plates are fixed to the lower side of the connecting shell, sliding holes are formed in the middles of the fixing plates, the sliding rods are slidably connected to the interiors of the sliding holes, the connecting frame is fixed to one ends of the sliding rods, the guide wheels are rotatably connected to the interiors of the connecting frame, and the extrusion heads are fixed to the connecting frame. An extrusion head is fixed to the other end of the sliding rod, a spring is connected to the circumferential face of the sliding rod in a sleeving mode, one end of the spring is fixed to the side face of the fixing plate, the other end of the spring is fixed to the side face of the connecting frame, the four sensing assemblies correspond to the four extrusion heads, and quick response can be achieved when a traveling crane is obliquely pulled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anti-inclined pulling mechanism, specifically to the crane anti-inclined pulling mechanism with inclined pulling alarm function. BACKGROUND

[0002] In the operation of hoisting machinery, inclined pulling and inclined lifting are important risk sources of accidents such as wire rope fracture and cargo falling. In the existing anti-inclined pulling device, some schemes adopt rigid mechanical limiting structure, for example, fixed baffle or limiting rod is arranged around the hoisting rope system, and the deviation angle of the wire rope is limited by physical blocking. However, such pure mechanical structure has obvious defects: when the wire rope swings slightly due to normal operation during hoisting, the rigid limiting device is easy to be triggered by mistake, which leads to frequent shutdown of the equipment and seriously affects the operation efficiency; and when the inclined pulling occurs, the structure lacks dynamic adjustment ability, so it is difficult to timely sense the inclined state and quickly respond. Therefore, we propose the crane anti-inclined pulling mechanism with inclined pulling alarm function. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide the crane anti-inclined pulling mechanism with inclined pulling alarm function, which can quickly respond when the crane is inclined and effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: the crane anti-inclined pulling mechanism with inclined pulling alarm function, comprising a connecting shell and a supporting assembly.

[0005] The connecting shell is provided with four corresponding sensing assemblies on the lower side.

[0006] The supporting assembly comprises a fixed plate, a sliding rod, a connecting frame, a guide wheel, a spring and a extrusion head, four corresponding fixed plates are fixed on the lower side of the connecting shell, a sliding hole is formed in the middle part of the fixed plate, a sliding rod is connected in the sliding hole, a connecting frame is fixed on one end of the sliding rod, a guide wheel is rotatably connected in the connecting frame, an extrusion head is fixed on the other end of the sliding rod, a spring is sleeved on the circumference of the sliding rod, one end of the spring is fixed on the side surface of the fixed plate, and the other end of the spring is fixed on the side surface of the connecting frame. Four sensing assemblies and four extrusion heads correspond to each other, and four guide wheels are arranged to be in close contact with the wire rope.

[0007] Further, the induction assembly comprises a connecting frame, a threaded rod, a mounting box, a pressure sensor and a rotating disc, four corresponding connecting frames are fixed to the lower side of the connecting shell, threaded holes are formed in the side surface of the connecting frame, threaded rods are in threaded connection with the threaded holes, mounting boxes are rotationally connected to the end surface of the threaded rod in the connecting frame, pressure sensors are mounted in the mounting box, the pressure sensors correspond to the extrusion head, rotating discs are fixed to the end surface of the threaded rod away from the mounting box, and the pressure sensor is bidirectionally electrically connected with the external PLC controller, the position of the steel wire rope is inducted by the induction assembly, when the steel wire rope is obliquely pulled, the external PLC controller receives the signal sent by the corresponding position pressure sensor, and the external PLC controller automatically controls the hoisting machinery to automatically stop and shut down.

[0008] Further, four corresponding guide grooves are formed in the upper end of the connecting shell, T-shaped sliding blocks are slidably connected in the guide grooves, and the T-shaped sliding blocks are fixed to the upper side of the connecting frame.

[0009] Further, two corresponding sliding grooves are formed in the connecting frame, sliding blocks are slidably connected in the sliding grooves, and the two sliding blocks are fixed to the side surface of the corresponding mounting box, so that the movement direction of the mounting box is limited by the sliding blocks.

[0010] Further, two corresponding mounting frames are fixed to the upper side of the connecting shell, mounting holes are formed in the upper side of the mounting frame, and the connecting shell is connected with the crab beam of the hoisting machinery through the mounting frame and the mounting hole.

[0011] Compared with the prior art, the crane anti-oblique pulling mechanism with the oblique pulling alarm function has the following advantages:

[0012] Through the combination of the spring and the pressure sensor, flexible buffering is provided when the lifting rope normally swings, and the problem of false triggering of the rigid limiting structure is avoided; when oblique pulling occurs, the steel wire rope is inclined to push the guide wheel to compress the spring, the extrusion head rapidly triggers the pressure sensor, and the PLC controller immediately cuts off the power of the crane, achieving millisecond-level response, which not only guarantees the continuity of operation, but also quickly brakes in real danger. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front side structure schematic view of the utility model;

[0014] Figure 2 It is a support assembly structure schematic view of the utility model;

[0015] Figure 3 It is an induction assembly structure schematic view of the utility model;

[0016] Figure 4 The utility model discloses a lower side structure schematic drawing.

[0017] In the drawing: 1 connecting shell, 2 support assembly, 21 fixed plate, 22 slide rod, 23 connecting frame, 24 guide wheel, 25 spring, 26 extrusion head, 3 induction assembly, 31 connecting frame, 32 threaded rod, 33 installation box, 34 pressure sensor, 35 rotating disc, 4 guide slot, 5 T-shaped slider, 6 sliding slot, 7 slider, 8 mounting bracket, 9 mounting hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0019] Please refer to Figures 1-4 The embodiment provides technical scheme: the crane anti-inclined mechanism with the cable-stayed alarm function, including connecting shell 1 and support assembly 2;

[0020] Connecting shell 1: four corresponding induction assemblies 3 are installed on the lower side, and the induction assembly 3 includes connecting frame 31, threaded rod 32, installation box 33, pressure sensor 34 and rotating disc 35, four corresponding connecting frames 31 are fixed on the lower side of connecting shell 1, the side surface of connecting frame 31 is provided with screw hole, the inside screw hole is connected with threaded rod 32, the end face inside connecting frame 31 is rotatably connected with installation box 33, the inside installation box 33 is provided with pressure sensor 34, pressure sensor 34 corresponds with extrusion head 26, the end face of threaded rod 32 away from installation box 33 is fixed with rotating disc 35, pressure sensor 34 is bidirectionally electrically connected with external PLC controller, the position of steel wire rope is inducted by setting induction assembly 3, when the cable-stayed of steel wire rope appears, the signal sent by the corresponding position pressure sensor 34 is received by external PLC controller, at this time, external PLC controller will automatically control hoisting machinery to automatically shut down and stop crane;

[0021] Supporting assembly 2: including fixed plate 21, slide rod 22, connecting frame 23, guide wheel 24, spring 25 and extrusion head 26, the lower side of connecting shell 1 is fixed with four corresponding fixed plates 21, the middle part of fixed plate 21 is provided with a sliding hole, the inside of the sliding hole is slidably connected with a slide rod 22, one end of the slide rod 22 is fixed with a connecting frame 23, the inside of the connecting frame 23 is rotatably connected with a guide wheel 24, the other end of the slide rod 22 is fixed with an extrusion head 26, a spring 25 is sleeved on the circumference of the slide rod 22, one end of the spring 25 is fixed on the side surface of the fixed plate 21, the other end of the spring 25 is fixed on the side surface of the connecting frame 23, four sensing assemblies 3 correspond to four extrusion heads 26 respectively, and the four guide wheels 24 are in close contact with the steel wire rope.

[0022] Wherein: the upper end of the connecting shell 1 is provided with four corresponding guide grooves 4, the inside of the guide grooves 4 is slidably connected with T-shaped sliding blocks 5, the T-shaped sliding blocks 5 are fixed on the upper side of the connecting frame 23, and the movement direction of the connecting frame 23 is limited by the guide grooves 4 and the T-shaped sliding blocks 5.

[0023] Wherein: the inside of the connecting frame 31 is provided with two corresponding sliding grooves 6, the inside of the sliding grooves 6 is slidably connected with sliding blocks 7, and the two sliding blocks 7 are fixed on the side surface of the corresponding installation box 33, so that the movement direction of the installation box 33 is limited by the sliding blocks 7.

[0024] Wherein: the upper side of the connecting shell 1 is fixed with two corresponding mounting frames 8, the upper side of the mounting frame 8 is provided with a mounting hole 9, and the connecting shell 1 and the travelling beam of the hoisting machinery are connected by the mounting frame 8 and the mounting hole 9.

[0025] The working principle of the crane anti-inclined pulling mechanism with the inclined pulling alarm function is as follows: in normal operation, the hoisting rope passes through the center area of the connecting shell 1, four guide wheels 24 are in flexible contact with the hoisting rope under the pre-tightening force of the spring 25, at this time, the spring 25 is in a natural extension and contraction state, a set gap is reserved between the extrusion head 26 and the pressure sensor 34, and the pressure sensor 34 has no signal output; when the hoisting rope is slightly deviated due to normal swinging, the guide wheel 24 is driven to push the connecting frame 23, the sliding rod 22 slides along the sliding hole of the fixed plate 21, the spring 25 absorbs the displacement energy through extension and contraction, rigid collision is avoided, the T-shaped sliding block 5 slides in the guide groove 4, linear movement of the connecting frame 23 is ensured, and mechanism jamming is prevented; if the hoisting rope is deviated to a certain direction by more than a safety threshold value, such as a deviation angle > 5°, the steel wire rope on the deviated side drives the corresponding guide wheel 24 to displace to the outside of the connecting shell 1, drives the connecting frame 23 to compress the spring 25, and the sliding rod 22 moves synchronously, the extrusion head 26 at the tail end of the sliding rod 22 breaks through the preset gap, directly presses the pressure sensor 34 in the installation box 33 on this side, the pressure sensor 34 transmits the pressure signal to the external PLC controller in real time, the external PLC controller immediately cuts off the power of the crane and triggers the external audible and light alarm, at the same time, the guide wheel 24 on the non-deviated side is reversely balanced under the spring tension, displacement is avoided, and misoperation is avoided; the initial distance between the installation box 33 and the extrusion head 26 is adjusted by rotating the rotating disc 35 to drive the threaded rod 32 to advance and retreat, so that the trigger threshold value in different working conditions is set, such as alarm when the pressure is greater than or equal to 50N, the sliding block 7 slides along the sliding groove 6 of the connecting frame 31, linear movement of the installation box 33 is ensured, and sensor deviation caused by rotation of the threaded rod 32 is avoided; after the fault is removed, the hoisting rope is reset to the vertical state, the spring 25 drives the guide wheel 24 to return to the initial position, the extrusion head 26 is automatically separated from the pressure sensor 34, and the system is reset and ready for use.

[0026] It is worth noting that the external PLC controller disclosed in the above embodiment is a specific model of Siemens S7-200, and the pressure sensor 34 can be freely configured according to actual application scenarios, and the external PLC controller controls the pressure sensor 34 to work by using a method commonly used in the prior art.

[0027] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion obtained by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A crane anti-slip mechanism with anti-slip alarm function, characterized in that: It includes connecting shell (1) and support assembly (2); Connecting shell (1): four corresponding induction assemblies (3) are installed on the lower side; Support assembly (2): it contains fixed plate (21), slide rod (22), connecting frame (23), guide wheel (24), spring (25) and extrusion head (26), the lower side of the connecting shell (1) is fixed with four corresponding fixed plates (21), the middle part of the fixed plate (21) is provided with a sliding hole, the sliding hole is slidably connected with the slide rod (22), one end of the slide rod (22) is fixed with the connecting frame (23), the connecting frame (23) is rotatably connected with the guide wheel (24), the other end of the slide rod (22) is fixed with the extrusion head (26), the spring (25) is sleeved on the circumference of the slide rod (22), one end of the spring (25) is fixed on the side surface of the fixed plate (21), the other end of the spring (25) is fixed on the side surface of the connecting frame (23), four induction assemblies (3) correspond to four extrusion heads (26).

2. The driving preventing mechanism with the diagonal pull alarm function according to claim 1, characterized in that: The induction assembly (3) contains connecting frame (31), threaded rod (32), mounting box (33), pressure sensor (34) and turntable (35), the lower side of the connecting shell (1) is fixed with four corresponding connecting frames (31), the side surface of the connecting frame (31) is provided with a threaded hole, the threaded hole is threadedly connected with the threaded rod (32), the threaded rod (32) is rotatably connected with the mounting box (33) on the end face in the connecting frame (31), the pressure sensor (34) is installed in the mounting box (33), the pressure sensor (34) corresponds to the extrusion head (26), the turntable (35) is fixed on the end face of the threaded rod (32) away from the mounting box (33), the pressure sensor (34) is bidirectionally electrically connected with the external PLC controller.

3. The driving preventing mechanism with the diagonal pull alarm function according to claim 1, characterized in that: The upper end of the connecting shell (1) is provided with four corresponding guide grooves (4), the T-shaped sliding block (5) is slidably connected in the guide groove (4), the T-shaped sliding block (5) is fixed on the upper side of the connecting frame (23).

4. The driving preventing mechanism with the diagonal pull alarm function according to claim 2, characterized in that: The inside of the connecting frame (31) is provided with two corresponding sliding grooves (6), the sliding block (7) is slidably connected in the sliding groove (6), two sliding blocks (7) are fixed on the side surface of the corresponding mounting box (33).

5. The anti-cable-slipping mechanism with cable-slipping alarm function according to claim 1, characterized in that: The upper side of the connecting shell (1) is fixed with two corresponding mounting frames (8), the mounting hole (9) is formed in the upper side of the mounting frame (8). The upper side of the connecting shell (1) is fixed with two corresponding mounting frames (8), the mounting hole (9) is formed in the upper side of the mounting frame (8).

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