Device for preventing steel wire rope of winding drum of bridge crane from being separated from groove
By installing a deviation correction detection device and baffle on the bridge crane, the problem of wire rope climbing or falling out of the groove due to the tilt of the grab bucket is solved, and the protection of the wire rope and production stability are achieved.
Patent Information
- Application Number
- CN202422892223.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-26
AI Technical Summary
When a bridge crane is grabbing materials, the wire rope is easily pulled obliquely due to the tilt of the grab bucket, causing it to climb into or fall out of the groove, resulting in increased wire rope loss and affecting the production rhythm.
A deviation correction detection device is installed on both sides of the rope eye of the wire rope. The induction rod and the support rod sense the oblique tension state of the wire rope, and the trolley moving mechanism corrects the deviation of the wire rope from the vertical direction, and cooperates with the baffle to prevent the wire rope from falling out of the groove.
It effectively prevents the wire rope from climbing into or falling out of the groove, reduces wire rope loss, maintains a stable production rhythm, and reduces maintenance costs.
Smart Images
Figure CN223458009U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cranes, and in particular relates to a device for preventing a wire rope from falling out of a drum of a bridge crane. Background Art
[0002] The primary raw material warehouse of the iron and steel plant consists of three span warehouses, A, B and C, with a total of 10 grab-type bridge cranes. Each crane is equipped with two winches, which drive the grab buckets to lift, open and close to grab and release bulk materials by rotating and winding wire ropes.
[0003] Primary storage facilities are primarily used for the transfer of raw materials such as coal, rubber powder, and mineral powder. The raw materials are dropped into a hopper below the crane via a conveyor belt installed above the crane. The crane then grabs and places them into various silos according to production process requirements. Due to production process factors, the material dumped into the hopper forms a conical pile within the hopper, with the highest point of the pile close to the crane beam. The crane often begins grabbing materials from the lower levels surrounding the conical pile. During the grabbing process, the grab bucket, upon landing on the material surface, often tilts left or right in the direction of the crane's movement, causing the wire rope to rise diagonally. This can easily cause the wire rope to escape the winch drum slot, causing it to climb or even fall out of the slot.
[0004] There are some problems when the wire rope climbs into or out of the groove: 1) The wire rope loss increases. Climbing into or out of the groove will cause the wire rope to detach from the winch drum, resulting in damage such as entanglement, interference, and broken strands. The entire wire rope can only be replaced, which increases maintenance costs; 2) It affects the production rhythm. After the wire rope is damaged, the workload of replacing the wire rope is large. During the period of tight production, climbing into or out of the groove will affect the overall feeding speed and the operation arrangement of the overall feeding conveyor belt, seriously affecting the production rhythm.
[0005] Therefore, it is necessary to study a device to prevent the wire rope in the hoisting drum of a bridge crane from falling out of the groove. Utility Model Content
[0006] In order to at least solve the problem in the prior art that the grab bucket on the bridge crane causes the wire rope to be pulled up obliquely during the material grabbing process, so that the wire rope can easily jump out of the winch drum slot, climb the slot or even fall out of the slot, the utility model provides the following technical solutions: a bridge crane drum wire rope anti-slip groove device, the bridge crane comprises: a trolley travel mechanism, a bridge, a trolley, a winch drum, a wire rope and a grab bucket, a pair of the bridges are horizontally mounted above the material pool and are moved by the trolley travel mechanism, the trolley is arranged between the pair of the bridges and runs along the track on the top of the bridge, the winch drum is installed on the trolley, and the winch drum drives the grab bucket below to operate by rotating and winding the wire rope, and the wire rope anti-slip groove device comprises: a deviation correction detection device;
[0007] The deviation correction detection device is located on the winding drum on both sides of the rope eye of the steel wire rope, and is used for sensing the inclined state of the steel wire rope caused by the tilt of the grab bucket, and correcting the deviation of the steel wire rope from the vertical direction in cooperation with the trolley moving mechanism.
[0008] The deviation correction detection device comprises two deviation correction detection units arranged on both sides of the winding drum, and each deviation correction detection unit comprises:
[0009] a pair of support rods vertically arranged in front of and behind the running direction of the trolley, and an induction rod provided with a safety voltage;
[0010] One end of the support rod is connected with the winding drum, and the support rod has a gap with the steel wire rope.
[0011] Both ends of the induction rod are insulatedly connected with one of the support rods.
[0012] Optionally, in the bridge crane winding drum steel wire rope anti-off groove device, the induction rod is signal connected with the trolley moving mechanism.
[0013] The trolley moving mechanism moves to the direction of the tilt of the grab bucket in response to the contact time of the steel wire rope with the induction rod being greater than 0.5 seconds.
[0014] Optionally, in the bridge crane winding drum steel wire rope anti-off groove device, the induction rod comprises a rod body and an isolation transformer and an intermediate relay arranged on the rod body.
[0015] The isolation transformer is a safety power supply, the negative electrode of the isolation transformer is connected with the grounding wire, the positive electrode of the isolation transformer is connected with one end of the coil of the intermediate relay, the other end of the coil of the intermediate relay is connected with the rod body, both ends of the rod body are insulatedly connected with one of the support rods, the contact of the intermediate relay is a normally open contact, and the normally open contact is connected with the control end of the trolley moving mechanism.
[0016] Optionally, in the bridge crane winding drum steel wire rope anti-off groove device, the normally open contact is connected with the control end of the PLC controller of the trolley moving mechanism.
[0017] The PLC controller has a false trigger prevention function for determining the false touch caused by the swing of the steel wire rope.
[0018] Optionally, in the bridge crane winding drum steel wire rope anti-off groove device, the length of the induction rod is not less than the maximum horizontal displacement generated by the inclination of the steel wire rope when the steel wire rope is grabbed by the grab bucket.
[0019] Optionally, in the bridge crane drum wire rope anti-off groove device, the induction rod is connected with the support rod through an insulator.
[0020] Optionally, in the bridge crane drum wire rope anti-off groove device, a reinforcing rod is arranged above the induction rod between the pair of support rods to increase the structural strength of the deviation correction detection unit.
[0021] Optionally, in the bridge crane drum wire rope anti-off groove device, the moving distance of the trolley moving mechanism is negatively correlated with the height of the grab bucket.
[0022] Optionally, in the bridge crane drum wire rope anti-off groove device, the wire rope anti-off groove device further comprises a baffle.
[0023] The baffle is sleeved on the hoisting drum on both sides of the eye of the wire rope, the radius of the baffle is greater than the diameter of the wire rope, and the baffle is used for preventing the wire rope from sliding out of the hoisting drum.
[0024] Optionally, in the bridge crane drum wire rope anti-off groove device, the radius of the baffle is greater than 3 times the diameter of the wire rope.
[0025] The hoisting drum on the side of the baffle away from the wire rope is provided with a support plate in the circumferential direction.
[0026] The support plate is located at the connection between the hoisting drum and the baffle.
[0027] The technical scheme provided by the embodiment of the utility model has the beneficial effects that:
[0028] The deviation correction detection device is arranged on the hoisting drum on both sides of the eye of the wire rope, as the first protection, for sensing the inclined state of the wire rope caused by the inclination of the grab bucket, cooperating with the trolley moving mechanism to correct the deviation of the wire rope from the vertical direction, when the wire rope is inclined caused by the inclination of the grab bucket, the wire rope touches any deviation correction detection unit, the deviation correction detection unit generates a safety voltage signal and transmits the signal to the PLC controller of the trolley moving mechanism, when the time of the inclined state of the wire rope meets the preset condition, the PLC controller sends an operation instruction to the trolley moving mechanism, the trolley moving mechanism receives and indicates according to the operation instruction, moves a distance to the direction of the inclination of the grab bucket, so that the wire rope is separated from the deviation correction detection unit, thereby eliminating the inclined state of the wire rope, and avoiding the phenomenon of wire rope climbing or off groove in the hoisting drum. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 A structural schematic view of the bridge crane drum wire rope anti-off groove device is provided for the embodiment of the utility model.
[0030] Figure 2 A front view structural schematic diagram of a bridge crane drum steel wire rope anti-off groove device is provided for the embodiment of the utility model;
[0031] Figure 3 A left view structural schematic diagram of a bridge crane drum steel wire rope anti-off groove device is provided for the embodiment of the utility model;
[0032] Figure 4 A top view structural schematic diagram of a bridge crane drum steel wire rope anti-off groove device is provided for the embodiment of the utility model;
[0033] In the figure: 1, crane; 101, bridge; 102, trolley; 103, trolley moving mechanism; 2, winding drum; 3, grab bucket; 4, steel wire rope; 5, induction rod; 6, support rod; 7, baffle; 8, support plate; 9, reinforcing rod. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will make further detailed description to the utility model embodiment combined with the drawings.
[0035] In the description of the utility model, the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is the orientation or position relationship shown based on the drawings, and is only for the convenience of describing the utility model and does not require the utility model to be necessarily constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation to the utility model. The terms "connected", "connected", "provided" used in the utility model should be understood broadly, for example, it can be fixed connection, also can be detachable connection, can be directly connected, also can be indirectly connected through intermediate parts, can be wired electrical connection, wireless electrical connection, also can be wireless communication signal connection, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0036] Please refer to Figures 1-4 The utility model provides the following technical scheme: a bridge crane drum steel wire rope anti-off groove device is applied to a bridge crane, referring to Figure 1 and Figure 2As shown, the bridge crane 1 comprises a trolley moving mechanism 103, a bridge 101, a trolley 102, a winch drum 2, a wire rope 4 and a grab bucket 3. Among them, a pair of bridges 101 are horizontally arranged above the material pool and move through the trolley moving mechanism 103 which is located on the high cement column or metal support above the material pool (the bridge 101 and the trolley moving mechanism 103 are collectively referred to as the trolley). The trolley 102 is arranged between the pair of bridges 101, and the trolley 102 can run along the track on the top of the bridge 101. The winch drum 2 is installed on the trolley 102, and the winch drum 2 drives the grab bucket 3 below by rotating and winding the wire rope 4 to perform operations such as lifting, opening and closing, and dumping and spreading materials. It should be noted that the bridge crane is prior art, and the specific structure thereof is not limited in the present application. The wire rope anti-off groove device of the present application comprises a deviation correction detection device. The deviation correction detection device is located on the winch drum 2 on both sides of the eye of the wire rope (referring to the position where the wire rope 4 extends out of the winch drum 2), and the deviation correction detection device is signal connected with the trolley moving mechanism 103. The deviation correction detection device (referring to the sensing rod 5) is used to sense the inclined state of the wire rope 4 caused by the inclination of the grab bucket 3, and corrects the deviation of the wire rope 4 from the vertical direction in cooperation with the trolley moving mechanism 103. Specifically, the deviation correction detection device comprises two deviation correction detection units arranged on both sides of the winch drum 2, and each deviation correction detection unit comprises a pair of support rods 6 vertically arranged in front of and behind the running direction of the trolley and a sensing rod 5 provided with a safety voltage (36V or 24V). One end of the support rod 6 is connected with the winch drum 2, and the support rod 6 has a gap with the wire rope 4. The two ends of the sensing rod 5 (also referred to as the deviation correction rod) are insulatedly connected with the support rod 6, such as the sensing rod 5 being connected with the support rod 6 through an insulator, so as to prevent the sensing rod 5 and the support rod 6 from forming a power return circuit, thereby eliminating the safety hazard. Preferably, the sensing rod 5 is signal connected with the trolley moving mechanism 103. During the grab material operation of the bridge crane, when the wire rope 4 is inclined due to the inclination of the grab bucket 3, the wire rope 4 touches the deviation correction detection unit on either side of the eye, because the deviation of the wire rope 4 to which side is random, the deviation correction detection unit (referring to the sensing rod 5) generates a safety voltage signal (sensing voltage) and transmits the signal to the PLC controller of the trolley moving mechanism 103. When the PLC controller judges that the time when the wire rope 4 is in the inclined state meets the preset condition, that is, the contact time between the wire rope 4 and the deviation correction detection unit reaches the preset condition, the PLC controller sends an operation instruction to the trolley moving mechanism 103. The trolley moving mechanism 103 receives the operation instruction and moves a distance in the direction of the inclination of the grab bucket 3 according to the operation instruction, so that the wire rope 4 is separated from the deviation correction detection unit, thereby eliminating the inclined state of the wire rope 4 and avoiding the phenomenon of the wire rope 4 climbing or off the groove in the winch drum 2. It should be noted that the specific value of the preset condition can be flexibly set according to the actual needs on site, and the present embodiment does not limit it.
[0037] Further, the length of the induction rod 5 is not less than the maximum horizontal displacement caused by the inclination of the steel wire rope 4 when the grab bucket 3 is grabbing the material, so that the induction rod 5 can fully cover the inclination position of the steel wire rope 4, that is, the steel wire rope 4 has the possibility of contacting the induction rod 5 on both sides no matter it is inclined forward or backward. The moving distance of the trolley moving mechanism 103 is negatively related to the height of the grab bucket 3, that is, the lower the height of the grab bucket 3, the greater the distance the trolley moving mechanism 103 needs to move, and vice versa.
[0038] As an embodiment of the specific structure of the induction rod 5, in the embodiment, the induction rod 5 comprises a rod body and an isolation transformer and an intermediate relay arranged on the rod body. Specifically, the isolation transformer is a safety power supply, the negative electrode of the isolation transformer is connected with the ground wire, the positive electrode of the isolation transformer is connected with one end of the intermediate relay, the other end of the intermediate relay is connected with the rod body, and the two ends of the rod body are respectively insulatedly connected with a support rod 6. Meanwhile, the contact of the intermediate relay is a normally open contact, which is connected with the control end of the trolley moving mechanism 103, and preferably, the normally open contact of the intermediate relay is connected with the control end of the PLC controller of the trolley moving mechanism 103. Thus, when the steel wire rope 4 contacts the rod body in the induction rod 5, a safety voltage signal (i.e. induction voltage) is formed in the coil loop of the intermediate relay, and the intermediate relay transmits the safety voltage signal to the PLC controller of the trolley moving mechanism 103 through the signal line after isolating the safety voltage signal (which plays a safety protection role). The PLC controller of the trolley moving mechanism 103 has a false trigger prevention function for determining the false touch caused by the swing of the steel wire rope 4. According to the actual site needs, the correction function starting time is set in the internal program of the PLC controller of the trolley moving mechanism 103 in advance. In simple terms, only when the contact time of the steel wire rope 4 with the induction rod 5 meets the preset condition, such as more than 0.5 seconds, the PLC controller of the trolley moving mechanism 103 will enable the correction function, that is, the PLC controller will send a control instruction to the trolley moving mechanism 103 to control the trolley moving mechanism 103 to move in the direction in which the grab bucket 3 is inclined, so as to eliminate the inclination state of the steel wire rope 4. When the contact time of the steel wire rope 4 with the induction rod 5 is less than 0.5 seconds, the PLC controller determines that it is a false touch caused by the swing of the steel wire rope 4, and does not enable the correction function.
[0039] Referring to Figure 2 As shown in FIG. 6, a reinforcing rod 9 is arranged above the induction rod 5 between the pair of support rods 6, which is used to increase the structural strength of the correction detection unit.
[0040] As a preferred embodiment of the above embodiment, in the embodiment, the steel wire rope anti-falling device further comprises a baffle 7. Referring to Figure 3As shown, the baffle 7 is sleeved on the winding drum 2 on both sides of the rope eye, the radius of the baffle 7 is greater than the diameter of the steel wire rope 4, for example, the radius of the baffle 7 is greater than 3 times the diameter of the steel wire rope 4. The baffle 7 serves as a second protection, when the deviation detection device cannot avoid the steel wire rope 4 from being out of the groove due to the cable-stayed, the baffle 7 can prevent the steel wire rope 4 from sliding out of the winding drum 2. Preferably, the winding drum 2 away from the steel wire rope 4 on the side of the baffle 7 is provided with a support plate 8 in the circumferential direction. The support plate 8 is located at the connection between the winding drum 2 and the baffle 7, and is used for increasing the load borne by the baffle 7, and plays a reinforcing role. The material of the baffle 7 is Q345B, and the shape of the baffle 7 can be triangular. The material of the winding drum 2 is Q235B, the thickness of the baffle 7 is 20mm, and the baffle 7 and the winding drum 2 are welded through J422 welding rods.
[0041] It is to be understood by those skilled in the art that the present application can be implemented by other embodiments without departing from the spirit or essential characteristics thereof. Therefore, the above disclosed embodiments are merely exemplary, and are not the only ones. All changes within the scope of the present application or equivalent to the present application are intended to be included in the present application.
Claims
1. A bridge crane drum wire rope anti-derailing device, the bridge crane comprising: The crane moving mechanism, the bridge, the trolley, the winch drum, the steel wire rope and the grab bucket, a pair of the bridge is horizontally arranged above the material pool and moves through the crane moving mechanism, the trolley is arranged between the pair of the bridge and runs along the track on the top of the bridge, the winch drum is installed on the trolley, the winch drum drives the grab bucket below to work by winding the steel wire rope through rotation, characterized in that the steel wire rope anti-off groove device comprises: a deviation correction detection device; The deviation correction detection device is arranged on the winch drum on both sides of the eye of the steel wire rope, is used for sensing the inclined state of the steel wire rope caused by the inclination of the grab bucket, and corrects the deviation of the steel wire rope from the vertical direction in cooperation with the crane moving mechanism; The deviation correction detection device comprises: two deviation correction detection units, the two deviation correction detection units are arranged on both sides of the winch drum, and the deviation correction detection unit comprises: A pair of support rods vertically arranged before and after along the running direction of the trolley and an inductive rod provided with a safety voltage; One end of the support rod is connected with the winch drum, and the support rod is spaced apart from the steel wire rope; Both ends of the inductive rod are insulatedly connected with one of the support rods.
2. The bridge crane drum rope anti-drop groove device according to claim 1, characterized in that, The inductive rod is signal connected with the crane moving mechanism; The crane moving mechanism moves to the direction of the inclination of the grab bucket in response to the contact time of the steel wire rope with the inductive rod being greater than 0.5 seconds.
3. The bridge crane drum rope anti-drop groove device according to claim 1, characterized in that, The inductive rod comprises: a rod body and an isolation transformer and an intermediate relay arranged on the rod body; The isolation transformer is a safety power supply, the negative electrode of the isolation transformer is connected with the grounding wire, the positive electrode of the isolation transformer is connected with one end of the coil of the intermediate relay, the other end of the coil of the intermediate relay is connected with the rod body, both ends of the rod body are insulatedly connected with one of the support rods, the contact of the intermediate relay is a normally open contact, and the normally open contact is connected with the control end of the PLC controller of the crane moving mechanism.
4. The bridge crane drum rope anti-drop groove device according to claim 3, characterized in that, The normally open contact is connected with the control end of the PLC controller of the crane moving mechanism; The PLC controller has a false trigger prevention function and is used for judging the false touch caused by the swing of the steel wire rope.
5. The bridge crane drum rope anti-drop groove device according to claim 1, characterized in that, The length of the inductive rod is not less than the maximum horizontal displacement generated by the inclination of the steel wire rope when the steel wire rope is grabbed by the grab bucket.
6. The bridge crane drum rope anti-drop groove device according to claim 1, characterized in that, The inductive rod is connected with the support rod through an insulator.
7. The bridge crane drum rope anti-drop groove device according to claim 1, characterized in that, A reinforcing rod is arranged between the pair of support rods and above the inductive rod, and is used for increasing the structural strength of the deviation correction detection unit.
8. The bridge crane drum rope anti-drop groove device according to claim 2, characterized in that, The moving distance of the crane moving mechanism is negatively correlated with the height of the grab bucket.
9. The bridge crane drum rope anti-drop groove device according to claim 1, characterized in that, The steel wire rope anti-off groove device further comprises: a baffle; The baffle is sleeved on the winch drum on both sides of the eye, the radius of the baffle is greater than the diameter of the steel wire rope, and the baffle is used for preventing the steel wire rope from sliding out of the winch drum.
10. The bridge crane drum rope anti-drop groove device according to claim 9, characterized in that, The radius of the baffle is greater than 3 times the diameter of the steel wire rope; The winch drum away from the steel wire rope on the side of the baffle is circumferentially provided with a support plate; The support plate is located at the connection between the winch drum and the baffle.