Automatic control system of lifting device

Abstract

The utility model belongs to the technical field of lifting device control application, and particularly discloses an automatic control system of a lifting device. Comprising a driving rotating shaft, a motor power transmission gear, a PLC, a first vertical beam, a second vertical beam, a power motor, a power driving gear, a first vertical supporting arm with transmission teeth, a second vertical supporting arm with transmission teeth, a supporting pedestal, a supporting frame plate with convex columns, a first circular plate, a second circular plate, a first circular convex plate, a second circular convex plate and a first rotating speed sensor mounting groove. A first rotating speed sensor, a second rotating speed sensor, a load sensor, a height sensor and the like. The utility model has the beneficial effects that the PLC is combined with a plurality of sensor modules for use, so that the automatic lifting control can be realized, the potential safety hazard problem is solved, and the labor is saved; and the structures of the driving rotating shaft, the first lifting control gear and the second lifting control gear are not changed, so that the conventional service life and safety performance are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of control application of lifting devices, and particularly relates to an automatic control system for a lifting device. Background Art

[0002] Classified by the driving type of the lifting device, it is mainly divided into three categories: pneumatic, hydraulic, and mechanical. Among them, the hydraulic type is the most, the mechanical type is the second, and the pneumatic type is the least.

[0003] Mechanical lift trucks mainly include single-motor-driven screw drive lift trucks and double-motor-driven screw drive lift trucks. The characteristics of this type of lift truck are good synchronism. Since it is generally driven by a motor and screw-driven, there is no problem of oil leakage and pollution.

[0004] When the mechanical lift truck is working, the power motor drives the motor power transmission gear through the power drive gear to drive the drive rotating shaft to rotate. The rotating drive rotating shaft drives the first lifting control gear and the second lifting control gear at both ends to rotate synchronously, and then completes the lifting control of the first belt drive tooth vertical support arm, the second belt drive tooth vertical support arm, the support pedestal, and the belt convex column support frame plate.

[0005] However, the current control method of the mechanical lift truck generally adopts manual operation. That is, after the material to be lifted is placed on the support pedestal, the operator manually controls the start and stop of the power motor. The problems are: (1) It consumes manpower and is not suitable for an automated production line; (2) The lifting / lowering of the first belt drive tooth vertical support arm and the second belt drive tooth vertical support arm is uncontrollable and requires the operator to judge, which has certain potential hazards and affects safe production operations.

[0006] Therefore, based on the above problems, the utility model provides an automatic control system for a lifting device. Content of the Utility Model

[0007] Purpose of the Utility Model: The purpose of the utility model is to provide an automatic control system for a lifting device in view of the deficiencies of the prior art, and solve the problems existing in the current manual control in the background art.

[0008] Technical solution: An automatic control system for a lifting device provided by the present utility model includes a driving rotating shaft, a motor power transmission gear, a first lifting control gear, a second lifting control gear, a PLC controller, a first vertical beam, a second vertical beam, a power motor, a power driving gear, a first belt-driven tooth vertical support arm, a second belt-driven tooth vertical support arm, a support pedestal, and a belt convex column support frame plate. First circular plates are respectively arranged on the outer layers of the outer walls of the first lifting control gear and the second lifting control gear. First circular convex plates are respectively arranged on one side of the first circular plates and the second circular plates. First rotational speed sensor mounting grooves are respectively arranged inside one side of the first circular convex plates and the second circular convex plates. First rotational speed sensors are respectively arranged in the first rotational speed sensor mounting grooves and the second rotational speed sensor mounting grooves. Load sensors are respectively arranged inside the upper end faces of the first belt-driven tooth vertical support arm and the second belt-driven tooth vertical support arm. A height sensor is arranged on the belt convex column support frame plate. Among them, the first rotational speed sensor, the second rotational speed sensor, the power motor, the load sensor, and the height sensor are respectively connected to the PLC controller.

[0009] In this technical solution, the automatic control system for the lifting device further includes a first circular table plate and a second circular table plate respectively arranged on the symmetric center lines of the outer walls of the first lifting control gear and the second lifting control gear, a first belt slot convex column and a second belt slot convex column respectively arranged on one side of the first circular table plate and the second circular table plate, a first L-shaped mounting plate and a second L-shaped mounting plate respectively arranged on the first vertical beam and the second vertical beam, a first through groove and a second through groove respectively arranged inside one end face of the first L-shaped mounting plate and the second L-shaped mounting plate, and a first angle sensor and a second angle sensor respectively arranged on the first L-shaped mounting and the second L-shaped mounting plate. The first angle sensor and the second angle sensor are respectively connected to the PLC controller. Among them, the rotating shaft of the first angle sensor passes through the first through groove and is connected to the first belt slot convex column, and the rotating shaft of the second angle sensor passes through the second through groove and is connected to the second belt slot convex column.

[0010] In this technical solution, the models of the first rotational speed sensor and the second rotational speed sensor respectively include but are not limited to SPH3 series metal threaded rotational speed sensors and CS-1-UNF rotational speed sensors.

[0011] In this technical solution, the models of the load sensor include but are not limited to ADK-209C and BRW100-1102.

[0012] In this technical solution, the models of the height sensor include but are not limited to DIMETIX series laser ranging sensors and BANNER ultrasonic photoelectric ranging sensors.

[0013] For the present technical solution, the models of the first angle sensor and the second angle sensor include, but are not limited to, the WOA-D2 dual-output magnetic induction multi-turn angle sensor and the VTA54T12 shafted single-turn angle sensor.

[0014] Compared with the prior art, the beneficial effects of an automatic control system for a lifting device of the present utility model are as follows: 1. By using a PLC controller in combination with multiple sensor modules, automatic lifting control can be achieved, solving the problem of potential safety hazards and saving labor; 2. Without modifying the structures of the driving rotating shaft, the first lifting control gear, and the second lifting control gear, the normal service life and safety performance are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a front view structural schematic diagram of an automatic control system for a lifting device of the present utility model;

[0017] Figure 2 It is a front view structural schematic diagram of the driving rotating shaft, the first lifting control gear, the second lifting control gear, the first belt-driven tooth vertical support arm, the second belt-driven tooth vertical support arm, and the load sensor of an automatic control system for a lifting device of the present utility model;

[0018] Figure 3 It is a left view structural schematic diagram of the first belt-driven tooth vertical support arm, the support pedestal, the belt convex column support frame plate, the load sensor, and the height sensor of an automatic control system for a lifting device of the present utility model;

[0019] Among them, the serial numbers in the figure are as follows: 100 - driving rotating shaft, 101 - motor power transmission gear, 102 - first lifting control gear, 103 - second lifting control gear, 104 - first circular plate, 105 - first circular convex plate, 106 - PLC controller, 1061 - first rotational speed sensor mounting groove, 107 - first rotational speed sensor, 108 - second circular plate, 109 - second circular convex plate, 110 - second rotational speed sensor mounting groove, 111 - second rotational speed sensor, 112 - first L-shaped mounting plate, 113 - first through groove, 114 - first angle sensor, 115 - first circular table plate, 116 - first convex column with card slot, 117 - second L-shaped mounting plate, 118 - second through groove, 119 - second angle sensor, 120 - first vertical beam, 121 - second circular table plate, 122 - second convex column with card slot, 123 - second vertical beam, 124 - power motor, 125 - power drive gear, 126 - first vertical support arm with belt transmission teeth, 127 - second vertical support arm with belt transmission teeth, 128 - support pedestal, 129 - support frame plate with convex column, 130 - load sensor, 131 - height sensor. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "rear", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Embodiment 1

[0022] As Figure 1 、 Figure 2 and Figure 3 shown, a lifting device automatic control system includes a driving rotating shaft 100, a motor power transmission gear 101, a first lifting control gear 102, a second lifting control gear 103, a PLC controller 106, a first vertical beam 120, a second vertical beam 123, a power motor 124, a power driving gear 125, a first belt-driven tooth vertical support arm 126, a second belt-driven tooth vertical support arm 127, a support pedestal 128, and a belt convex column support frame plate 129,

[0023] On the outer layers of the outer walls of the first lifting control gear 102 and the second lifting control gear 103, a first circular plate 104 and a second circular plate 108 are respectively arranged.

[0024] On one side of the first circular plate 104 and the second circular plate 108, a first circular convex plate 105 and a second circular convex plate 109 are respectively arranged.

[0025] Inside one side of the first circular convex plate 105 and the second circular convex plate 109, a first rotational speed sensor installation groove 1061 and a second rotational speed sensor installation groove 110 are respectively arranged.

[0026] Inside the first rotational speed sensor installation groove 1061 and the second rotational speed sensor installation groove 110, a first rotational speed sensor 107 and a second rotational speed sensor 111 are respectively arranged.

[0027] Inside the upper end faces of the first belt-driven tooth vertical support arm 126 and the second belt-driven tooth vertical support arm 127, load sensors 130 are respectively arranged.

[0028] On the belt convex column support frame plate 129, a height sensor 131 is arranged.

[0029] Among them, the first rotational speed sensor 107, the second rotational speed sensor 111, the power motor 124, the load sensors 130, and the height sensor 131 are respectively connected to the PLC controller 106.

[0030] The working principle is as follows: (1) When the material is placed on the support pedestal 128, at this time, the belt convex column support frame plate 129 exerts pressure on the load sensors 130 on the first belt-driven tooth vertical support arm 126 and the second belt-driven tooth vertical support arm 127;

[0031] (2) The PLC controller 106 receives the feedback information of the load sensor 130 in real time, and starts the power motor 124 according to the preset weight value information. At this time, the power drive gear 125 drives the motor power transmission gear 101, and the motor power transmission gear 101 drives the drive shaft 100, the first lifting control gear 102, and the second lifting control gear 103 to rotate synchronously. When the first lifting control gear 102 and the second lifting control gear 103 rotate, they drive the first belt-driven tooth vertical support arm 126 and the second belt-driven tooth vertical support arm 127 to lift synchronously. At this time, the support pedestal 128, the belt convex column support frame plate 129 on the first belt-driven tooth vertical support arm 126 and the second belt-driven tooth vertical support arm 127 and the material are lifted upward together;

[0032] (3) The PLC controller 106 receives the feedback information of the height sensor 131 in real time, and controls the power motor 124 to stop according to the preset height value information, completing the corresponding material lifting control. When the goods on the support pedestal 128 move, the feedback information of the load sensor 130 is zero at this time. At this time, the power motor 124 is started. At this time, the power drive gear 125 drives the motor power transmission gear 101, and the motor power transmission gear 101 drives the drive shaft 100, the first lifting control gear 102, and the second lifting control gear 103 to rotate synchronously. When the first lifting control gear 102 and the second lifting control gear 103 rotate, they drive the first belt-driven tooth vertical support arm 126 and the second belt-driven tooth vertical support arm 127 to reset synchronously. The support pedestal 128 and the belt convex column support frame plate 129 on the first belt-driven tooth vertical support arm 126 and the second belt-driven tooth vertical support arm 127 are reset.

[0033] During the above lifting / reset process, the PLC controller 106 receives the feedback information of the first speed sensor 107 and the second speed sensor 111 in real time, and then controls the rotation speeds of the power drive gear 125 and the motor power transmission gear 101 to drive the motor power transmission gear 101, completing the precise and stable control of the rotation speed of the drive shaft 100, and meeting the safe lifting / reset control. Embodiment 2

[0034] On the basis of the first embodiment, the automatic control system of the lifting device further includes a first circular platen 115 and a second circular platen 121 respectively arranged on the symmetric center lines of the outer walls of the first lifting control gear 102 and the second lifting control gear 103, a first card slot convex column 116 and a second card slot convex column 122 respectively arranged on one side of the first circular platen 115 and the second circular platen 121, a first L-shaped mounting plate 112 and a second L-shaped mounting plate 117 respectively arranged on the first vertical beam 120 and the second vertical beam 123, a first through groove 113 and a second through groove 118 respectively arranged in the end faces of one ends of the first L-shaped mounting plate 112 and the second L-shaped mounting plate 117, and a first angle sensor 114 and a second angle sensor 119 respectively arranged on the first L-shaped mounting plate 112 and the second L-shaped mounting plate 117. The first angle sensor 114 and the second angle sensor 119 are respectively connected to the PLC controller 106;

[0035] Among them, the rotating shaft of the first angle sensor 114 passes through the first through groove 113 and is connected to the first card slot convex column 116, and the rotating shaft of the second angle sensor 119 passes through the second through groove 118 and is connected to the second card slot convex column 122. The above design of the dual angle sensors realizes the real-time monitoring of the rotation working state of the driving rotating shaft 100.

[0036] In the above first embodiment or the second embodiment, preferably, the models of the first speed sensor 107 and the second speed sensor 111 respectively include but are not limited to SPH3 series metal threaded speed sensors and CS-1-UNF speed sensors; preferably, the model of the load sensor 130 includes but is not limited to ADK-209C and BRW100-1102; preferably, the model of the height sensor 131 includes but is not limited to DIMETIX series laser ranging sensors and BANNER ultrasonic photoelectric ranging sensors; preferably, the models of the first angle sensor 114 and the second angle sensor 119 respectively include but are not limited to WOA-D2 dual-output magnetic induction multi-turn angle sensors and VTA54T12 shaft-type single-turn angle sensors.

[0037] The driving rotating shaft 100, the motor power transmission gear 101, the first lifting control gear 102, the second lifting control gear 103, the PLC controller 106, the first vertical beam 120, the second vertical beam 123, the power motor 124, the power driving gear 125, the first belt-driven tooth vertical support arm 126, the second belt-driven tooth vertical support arm 127, the support pedestal 128, the convex column support frame plate 129, the first speed sensor 107, the second speed sensor 111, the load sensor 130, the height sensor 131, the first angle sensor 114, the second angle sensor 119, etc. in the automatic control system of the lifting device of this structure are all conventional components or devices. They will not be elaborated in this application.

[0038] It should be noted that in this text, terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. An automatic control system for a lifting device, comprising a driving rotating shaft (100), a motor power transmission gear (101), a first lifting control gear (102), a second lifting control gear (103), a PLC controller (106), a first vertical beam (120), a second vertical beam (123), a power motor (124), a power driving gear (125), a first belt-driven tooth vertical support arm (126), a second belt-driven tooth vertical support arm (127), a support pedestal (128) and a belt convex column support frame plate (129), characterized in that: The outer layers of the outer walls of the first lifting control gear (102) and the second lifting control gear (103) are respectively provided with a first circular plate (104) and a second circular plate (108). One side of the first circular plate (104) and the second circular plate (108) is respectively provided with a first circular convex plate (105) and a second circular convex plate (109). One side of the first circular convex plate (105) and the second circular convex plate (109) is respectively provided with a first rotational speed sensor mounting groove (1061) and a second rotational speed sensor mounting groove (110). A first rotational speed sensor (107) and a second rotational speed sensor (111) are respectively arranged in the first rotational speed sensor mounting groove (1061) and the second rotational speed sensor mounting groove (110). Load sensors (130) are respectively arranged in the upper end faces of the first belt-driven tooth vertical support arm (126) and the second belt-driven tooth vertical support arm (127). A height sensor (131) is arranged on the belt convex column support frame plate (129). Among them, the first rotational speed sensor (107), the second rotational speed sensor (111), the power motor (124), the load sensor (130), and the height sensor (131) are respectively connected to the PLC controller (106).

2. The automatic control system of a lifting device according to claim 1, characterized in that: The automatic control system for the lifting device further includes a first circular table plate (115) and a second circular table plate (121) respectively arranged on the symmetric center lines of the outer walls of the first lifting control gear (102) and the second lifting control gear (103), a first belt slot convex column (116) and a second belt slot convex column (122) respectively arranged on one side of the first circular table plate (115) and the second circular table plate (121), a first L-shaped mounting plate (112) and a second L-shaped mounting plate (117) respectively arranged on the first vertical beam (120) and the second vertical beam (123), a first through groove (113) and a second through groove (118) respectively arranged in the end faces of one ends of the first L-shaped mounting plate (112) and the second L-shaped mounting plate (117), and a first angle sensor (114) and a second angle sensor (119) respectively arranged on the first L-shaped mounting plate (112) and the second L-shaped mounting plate (117). The first angle sensor (114) and the second angle sensor (119) are respectively connected to the PLC controller (106). Among them, the rotating shaft of the first angle sensor (114) passes through the first through slot (113) and then is connected to the first card slot convex post (116), and the rotating shaft of the second angle sensor (119) passes through the second through slot (118) and then is connected to the second card slot convex post (122).

3. The automated control system of a lifting device according to claim 1, characterized in that: The models of the first rotational speed sensor (107) and the second rotational speed sensor (111) include, but are not limited to, SPH3 series metal threaded rotational speed sensors and CS-1-UNF rotational speed sensors respectively.

4. The automated control system of a lifting device according to claim 1, characterized in that: The models of the load sensor (130) include, but are not limited to, ADK-209C and BRW100-1102.

5. The automated control system of a lifting device according to claim 1, wherein: The models of the height sensor (131) include, but are not limited to, DIMETIX series laser distance sensors and BANNER ultrasonic and photoelectric distance sensors.

6. The automatic control system of a lifting device according to claim 2, characterized in that: The models of the first angle sensor (114) and the second angle sensor (119) include, but are not limited to, WOA-D2 dual-output magnetic induction multi-turn angle sensors and VTA54T12 shaft-type single-turn angle sensors respectively.

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