Self-centering crane electric windproof securing system
The self-aligning electric windproof fixing system for cranes utilizes components such as an electrical control box and position sensors to achieve automatic alignment between the electric tie rod and the anchor seat. This solves the problem of manual intervention in traditional electric windproof fixing devices for cranes, and improves the safety and automation of cranes.
Patent Information
- Application Number
- CN202520410289.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Traditional electric windproof fixing devices for cranes suffer from large errors in the crane's trolley stopping position when the electric tie rod engages with the anchor thread, making it difficult to align the screw and nut manually, thus affecting safety and automation.
The crane adopts a self-aligning electric windproof fixing system, which uses components such as an electrical control box, position sensor and reducer to realize automatic alignment between the electric tie rod and the anchor. Through the cooperation of composite screw and floating nut, the position of screw and nut is automatically adjusted to ensure meshing accuracy.
It enables unmanned parking of the crane trolley, has a simple structure and is easy to operate, improves the safety and automation of the crane, and avoids the need for manual intervention.
Smart Images
Figure CN223852125U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the hoisting machinery technical field applied to the port, wharf, stockyard and other occasions, specifically relates to a self-centering crane electric wind prevention system. BACKGROUND
[0002] The crane is important equipment for port loading and unloading operation, and its safety is crucial. The wind prevention system is mainly used for preventing the crane from being blown by strong wind such as typhoon or gust in non-working state, causing safety accidents such as crane overturning, and timely and reliable wind prevention before the arrival of typhoon and gust is an important guarantee for safe operation of the crane. The traditional wind prevention system of the crane mostly adopts manpower to connect the wind prevention cable or wind prevention rod with the foundation anchor base, and then manually tightens.
[0003] In view of the deficiencies of the traditional wind prevention system, an electric wind prevention device driven by a motor is used. However, the electric wind prevention device also has the following deficiencies: when the electric rod is fixed, the screw rod of the electric rod is extended and threadedly engaged with the nut plate of the anchor base. In order to ensure that the screw rod and the nut are smoothly engaged, high axial alignment accuracy of the screw rod and the nut is required. However, due to the influence of the weight inertia of the crane, the frictional resistance of the track and the wheel, and the accuracy of the positioning system of the crane, the accuracy error of the stopping position of the crane is more than 50mm, which makes it difficult for the screw rod of the electric rod to be smoothly engaged with the nut of the anchor base. Therefore, manual micro-motion of the crane is required to meet the alignment of the screw rod of the electric rod with the nut of the anchor base. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide a self-centering electric wind prevention system of the crane.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] The utility model provides a self -centering crane electric wind -proof system, has such characteristics, include: electric pull rod for hanging on the crane main machine, anchor base for installing on the wharf foundation and electric control box contain with electric pull rod electric connection's controller, wherein, electric pull rod contains the tubular rod body, the earring, the nut, the driving motor, the speed reducer and the composite screw rod, the earring and the nut are fixedly arranged the upper end and the lower end of the rod body respectively, the driving motor, the speed reducer and the composite screw rod are installed in the rod body from top to bottom in proper order, the composite screw rod is set on the output shaft of the speed reducer in the way of circumferential fixed axial slidable, and the outer surface has the outer thread matched with the inner thread of the nut, the anchor base contains the base, the hollow ring -like guide cover, the hollow star -shaped floating nut of the floating nut of the hollow ring -like guide cover, the spring pressure seat and two butterfly springs, the guide cover is fixedly arranged on the base, and the upper end surface is equipped with the guide hole matched with the composite screw rod and the inverted cone, the floating nut is movably installed in the guide cover, has the inner thread matched with the outer thread of the composite screw rod, the spring pressure seat is fixedly arranged on the lower end surface of the guide cover, and two butterfly springs are respectively set in the upper end and the lower end of the floating nut.
[0007] In the self -centering crane electric wind -proof system provided by the utility model, the composite screw rod and the output shaft of the speed reducer can be circumferentially fixed and axially slidable through the following structure: the outer surface of the output shaft is provided with a guide key, and the inner hole of the composite screw rod is provided with a key groove extending along the axial direction of the composite screw rod and matched with the guide key.
[0008] In the self -centering crane electric wind -proof system provided by the utility model, the guide key can be a spline.
[0009] In the self -centering crane electric wind -proof system provided by the utility model, the upper position sensor and the lower position sensor for detecting the position of the composite screw rod and electrically connected with the controller can be arranged on the rod body.
[0010] In the self -centering crane electric wind -proof system provided by the utility model, the rod body and the nut can be coaxially arranged.
[0011] In the self -centering crane electric wind -proof system provided by the utility model, the guide cover, the floating nut, the butterfly spring and the spring pressure seat can be coaxially arranged.
[0012] In the self -centering crane electric wind -proof system provided by the utility model, the base can be composed of an upper plate, a tube seat body and a bottom plate.
[0013] The self-alignment crane electric wind-preventing fixing system further has the following features: the bottom plate is provided with mounting screw holes connected with foundation embedded anchor bolts.
[0014] The self-alignment crane electric wind-preventing fixing system further has the following features: a joint bearing is installed in the inner hole of the ear ring.
[0015] The self-alignment crane electric wind-preventing fixing system further has the following features: a manual device is arranged on the rod body at a position corresponding to the upper end of the driving motor,
[0016] The manual device is connected with the rotating shaft of the driving motor.
[0017] Compared with the prior art, the self-alignment crane electric wind-preventing fixing system has the following advantages:
[0018] (1) When the trolley of the crane stops at a position with an error, the screw rod of the electric pull rod is automatically inserted into the nut of the base, without manual intervention, and the unmanned parking of the trolley is realized.
[0019] (2) The structure is simple, the operation is simple, the system is fully automatic, safe and reliable. DETAILED DESCRIPTION
[0020] Figure 1 is a perspective structural schematic view of the self-alignment crane electric wind-preventing fixing system in a fixing state in the embodiment of the utility model;
[0021] Figure 2 is a sectional structural schematic view of the self-alignment crane electric wind-preventing fixing system in a non-fixing state in the embodiment of the utility model;
[0022] Figure 3 is a sectional structural schematic view of the self-alignment crane electric wind-preventing fixing system in a fixing state in the embodiment of the utility model;
[0023] Figure 4 is a sectional structural schematic view of the electric pull rod in the embodiment of the utility model; and
[0024] Figure 5 is a sectional structural schematic view of the anchor base in the embodiment of the utility model.
[0025] In the figure: 100 is an electric pull rod, 101 is an ear ring, 102 is a manual device, 103 is a driving motor, 104 is a rod body, 105 is a speed reducer, 106 is a composite screw rod, 107 is a nut, 108 is a lower position sensor, 109 is an upper position sensor, 110 is a junction box, 200 is an anchor base, 201 is a guide cover, 202 is a spring, 203 is a base, 204 is a spring pressure seat, 205 is a floating nut, 300 is an electric control box. DETAILED DESCRIPTION
[0026] The concept, specific structure and technical effects of the present application will be further described below in combination with the drawings, so as to fully understand the purpose, features and effects of the present application.
[0027] <EMBODIMENT>
[0028] Figure 1 is a perspective structural schematic view of the self-centering crane electric wind-preventing fixing system in the embodiment of the present application in a fixing state; Figure 2 is a cross-sectional structural schematic view of the self-centering crane electric wind-preventing fixing system in the embodiment of the present application in a non-fixing state; Figure 3 is a cross-sectional structural schematic view of the self-centering crane electric wind-preventing fixing system in the embodiment of the present application in a fixing state.
[0029] As shown in Figures 1 to 3 , in the present embodiment, the self-centering crane electric wind-preventing fixing system comprises an electric pull rod 100, an anchor base 200 and an electric control box 300.
[0030] Figure 4 is a cross-sectional structural schematic view of the electric pull rod in the embodiment of the present application.
[0031] As shown in Figures 1 to 4 , the electric pull rod 100 is hung on the crane main machine, and comprises a rod body 104, an ear ring 101, a nut 107, a driving motor 103, a speed reducer 105, a composite screw rod 106, a manual device 102, an upper position sensor 109, a lower position sensor 108 and a junction box 110.
[0032] The rod body 104 is tubular and is connected by a steel pipe with a certain thickness.
[0033] The ear ring 101 is fixedly arranged at the upper end of the rod body 104 and is used for being connected with the crane main machine. In the present embodiment, a knuckle bearing is mounted in the inner hole of the ear ring 10, so that the electric pull rod 100 can be inclined and rotated relative to the crane main machine.
[0034] The nut 107 is coaxially fixedly arranged at the lower end of the rod body 104.
[0035] The driving motor 103, the speed reducer 105 and the composite screw rod 106 are coaxially and sequentially installed in the rod body 104.
[0036] The composite screw rod 106 is a hollow tubular shaft, which is sleeved on the output shaft of the speed reducer 105 in a circumferential fixed and axial slidable manner, and is movably installed in the nut 107, and the outer surface of the composite screw rod 106 has external threads matched with the internal threads of the nut 107.
[0037] In the embodiment, the circumferential fixed and axial slidable manner between the composite screw rod 107 and the output shaft of the speed reducer 105 is achieved by that the output shaft of the speed reducer 105 is provided with a guide key, preferably a spline, and the inner hole of the composite screw rod 106 is provided with a key groove extending along the axial direction and matched with the guide key.
[0038] In the embodiment, when the composite screw rod 106 is retracted to the innermost position of the rod body 104, the external threads of the composite screw rod 106 are not disengaged from the internal threads of the nut 107; when the composite screw rod 106 is extended to the longest position of the rod body 104, the key groove in the inner hole of the composite screw rod 106 is not disengaged from the guide key on the output shaft of the speed reducer 105.
[0039] The upper position sensor 109 and the lower position sensor 108 are used for detecting the position of the composite screw rod 106, and are fixedly arranged on the rod body 104 and correspond to the positions where the composite screw rod 106 is retracted to the innermost position of the rod body 104 and extended to the longest position of the rod body 104, respectively.
[0040] The manual device 102 is arranged on the rod body 104 at a position corresponding to the upper end of the driving motor 103 and connected with the rotating shaft of the driving motor 103, and is used for manually rotating the rotating shaft of the driving motor 103 when the driving motor cannot be started due to power failure or other reasons, so as to realize the fixing of the electric pull rod 100 and the anchorage and the release of the anchorage.
[0041] The junction box 110 is fixedly arranged on the rod body 104.
[0042] Figure 5 It is a cross-sectional structure schematic view of the anchorage in the embodiment of the utility model.
[0043] As shown in Figures 1 to 3 and Figure 5 , the anchorage 200 is used for being installed on the wharf foundation, and comprises a base 203, a guide cover 201, a floating nut 205, a spring pressing base 204 and two butterfly springs 202.
[0044] The base 203 is used for being installed on the wharf foundation and is composed of an upper plate, a pipe base body and a bottom plate. In the embodiment, the bottom plate is provided with mounting screw holes connected with foundation embedded anchor bolts.
[0045] The guide cover 201 is a hollow circular ring, fixedly arranged on the upper plate of the base 203, and the upper end surface of the guide cover 201 is provided with a guide hole matched with the composite lead screw 106, and the guide hole is a large chamfered round cone.
[0046] The floating nut 205 is movably arranged in the guide cover 201, and is a hollow top wheel with a large middle diameter and small head diameters, and the inner hole of the floating nut 205 has an inner thread matched with the outer thread of the composite lead screw 106.
[0047] The spring pressing seat 204 is fixedly arranged on the lower end surface of the guide cover 201.
[0048] The two butterfly springs 202 are arranged in the guide cover 201, and are respectively sleeved on the upper end and the lower end of the floating nut 205. The inner hole of the butterfly spring 202 is matched with the shaft block with a small diameter at the two ends of the floating nut 205.
[0049] In the embodiment, the guide cover 201, the floating nut 205, the butterfly spring 202 and the spring pressing seat 204 are coaxially arranged.
[0050] As shown in Figures 1 to 3 The electric control box 300 is hung on the main machine of the crane, and contains a PLC controller and an operation panel. The PLC controller is electrically connected with the upper position sensor 109, the lower position sensor 108 and the driving motor 103, used to receive the operation instruction input from the operation panel and the position signal sent by the upper position sensor 109 and the lower position sensor 108, and control the driving motor 103 to act, so as to realize the automatic anchoring of the electric pull rod 100 and the anchor base 200 and the release of the anchorage.
[0051] As shown in Figures 1 to 5 The process of realizing anchoring and releasing of the self-centering crane electric windproof anchoring system in the embodiment is as follows:
[0052] When the anchoring, the electric control box 300 is powered on, the driving motor 103 is driven to increase the torque after the reduction of the reduction machine 105, the output shaft of the reduction machine 105 drives the composite lead screw 106 to rotate, since the nut 107 and the rod body 104 of the electric pull rod 100 are fixed, the composite lead screw 106 extends out of the rod body 104 after rotating, when the crane trolley has an error in the stop position, the lower end of the composite lead screw 106 will rotate into the inverted conical guide hole of the guide cover 201. Since the ear ring 101 is provided with a relevant joint bearing, the electric pull rod 100 produces a certain inclination, the lower end of the composite lead screw 106 rotates the end face of the floating nut 205, the butterfly spring 202 produces one-sided compression, the outer thread of the composite lead screw 106 and the inner thread of the floating nut 205 are coupled to realize the rotation. Reach the design requirement position, the lower position sensor 108 sends the stop command to the PLC controller of the electric control box 300, the driving motor 103 stops working, so as to realize the anchoring of the electric pull rod 100 and the anchor base 200.
[0053] When the anchoring is released, the driving motor 103 is powered in reverse, the composite lead screw 106 rotates in reverse to rotate the floating nut 205, the composite lead screw 106 is retracted into the rod body 104 of the electric pull rod 100, reaches the design requirement position, the upper position sensor 109 sends the stop command to the PLC controller of the electric control box 300, the driving motor 103 stops working, so as to realize the anchoring release of the electric pull rod 100 and the anchor base 200.
[0054] The above embodiment is a preferred case of the utility model, and does not limit the protection scope of the utility model.
Claims
1. A self-centering, electrically powered windlass system for a crane, characterized in that, The self-aligning crane electric wind-proof system comprises: an electric pull rod for being hung on a main machine of a crane; an anchor base for being installed on a wharf foundation; and an electric control box containing a controller electrically connected with the electric pull rod, wherein the electric pull rod contains a rod body in a tubular shape, an ear ring, a nut, a driving motor, a speed reducer and a composite screw rod in a hollow tubular shape, the ear ring and the nut are respectively fixedly arranged at upper and lower ends of the rod body, the driving motor, the speed reducer and the composite screw rod are sequentially arranged in the rod body from top to bottom, the composite screw rod is fixedly arranged on an output shaft of the speed reducer in a circumferential direction and is axially slidable, and an outer surface of the composite screw rod has an external thread matched with an internal thread of the nut, the anchor base contains a base, a guide cover in a hollow circular ring shape, a floating nut in a hollow worm gear shape with a middle diameter larger than two end diameters, a spring pressing base and two butterfly springs, the guide cover is fixedly arranged on the base, and an upper end surface of the guide cover is provided with a guide hole matched with the composite screw rod and in an inverted conical shape, the floating nut is movably arranged in the guide cover and has an internal thread matched with an external thread of the composite screw rod, the spring pressing base is fixedly arranged on a lower end surface of the guide cover, and the two butterfly springs are respectively arranged on upper and lower ends of the floating nut.
2. The self-aligning crane electric wind-proof system according to claim 1, wherein: circumferential fixing and axial slidable connection between the composite screw rod and the output shaft of the speed reducer is achieved by the following structure: wherein an outer surface of the output shaft is provided with a guide key, an inner hole of the composite screw rod is provided with a key groove extending along an axial direction of the composite screw rod and matched with the guide key.
3. The self-aligning crane electric wind-proof system according to claim 2, wherein: the guide key is a spline. wherein 4. The self-aligning crane electric wind-proof system according to claim 1, wherein: the rod body is provided with an upper position sensor and a lower position sensor for detecting positions of the composite screw rod and respectively electrically connected with the controller. wherein 5. The self-aligning crane electric wind-proof system according to claim 1, wherein: the rod body and the nut are coaxially arranged. wherein 6. The self-aligning crane electric wind-proof system according to claim 1, wherein: the guide cover, the floating nut, the butterfly springs and the spring pressing base are coaxially arranged. wherein, 7. The self-aligning crane electric wind-proof system according to claim 1, wherein: the base is composed of an upper plate, a tubular base body and a bottom plate. wherein 8. The self-aligning crane electric wind-proof system according to claim 7, wherein: the bottom plate is provided with mounting screw holes connected with foundation bolts pre-buried in the wharf foundation. wherein 9. The self-aligning crane electric wind-proof system according to claim 1, wherein: a joint bearing is arranged in an inner hole of the ear ring. wherein, The self-aligning crane electric wind-proof system further comprises:
10. The self-aligning crane electro-motive windlass system of claim 1, wherein, a manual device arranged on the rod body at a position corresponding to an upper end of the driving motor, wherein the manual device is connected with a rotating shaft of the driving motor.