A counterweight device for detecting load in a freight elevator car

Abstract

The utility model discloses a counterweight device for detecting the load of a freight elevator car, which relates to the technical field of detecting the load of a freight elevator car, and comprises a fixed frame and a guide assembly; the fixed frame: a sliding frame is slidably connected on the side, a PLC controller is installed on the left side of the fixed frame, the input end of the PLC controller is electrically connected to the output end of an external power supply, a first electric telescopic rod is installed on the front side of the slide frame, and a power assembly is installed inside the slide frame; the guide assembly: comprises a mounting frame, a mobile frame, a bidirectional screw, a guide wheel and a first motor, a mounting frame is fixed on the telescopic arm of the first electric telescopic rod, two corresponding mobile frames are slidably connected inside the mounting frame, threaded holes are opened on the side of the mobile frame, the threads of the two threaded holes are opposite, the internal threads of the two threaded holes are connected with bidirectional screws, the operation is convenient, and there is no need to carry it, and damage to the elevator car is inevitable.

Description

Technical Field

[0001] The utility model relates to the technical field of freight elevator car load detection, in particular to a counterweight device for freight elevator car load detection. Background Art

[0002] The car is a box-shaped space used by elevators to carry and transport people and materials. The car is generally composed of the car bottom, car wall, car top, car door and other main components. It is the car body component used by the elevator to carry passengers or goods and other loads. The weighing device is generally located on the car bottom, and a few are located on the upper beam or rope head board on the car top. It is the most basic switch. When overloaded (exceeding the rated load by 10%), the elevator door cannot be closed and the elevator cannot be started. At the same time, sound and light signals are issued (some have no light signals), so it is also called an overload switch. The weighing device needs to be tested during the load inspection of the car elevator;

[0003] At present, when performing load detection on the elevator car, the conventional operation is to carry heavy objects into the elevator car and trigger the weighing device for detection through the heavy objects. This has the disadvantages of inconvenient operation and time-consuming and labor-intensive. The load of a conventional car elevator is about 1000kg. Carrying heavy objects is not only time-consuming and labor-intensive, but also easy to damage the elevator car floor or side walls during the transportation process. Therefore, we propose a counterweight device for freight elevator car load detection. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a counterweight device for detecting the load of a freight elevator car, which can be easily operated, does not require transportation, and will not damage the elevator car, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a counterweight device for detecting the load of a freight elevator car, comprising a fixed frame and a guide assembly;

[0006] Fixed frame: a sliding frame is slidably connected to the side, a PLC controller is installed on the left side of the fixed frame, the input end of the PLC controller is electrically connected to the output end of the external power supply, a first electric telescopic rod is installed on the front side of the sliding frame, and a power component is installed inside the sliding frame;

[0007] Guide assembly: comprises an installation frame, a movable frame, a bidirectional screw, a guide wheel and a first motor, a installation frame is fixed on the telescopic arm of the first electric telescopic rod, two corresponding movable frames are slidably connected inside the installation frame, a threaded hole is provided on the side of the movable frame, the threads of the two threaded holes are opposite, and the internal threads of the two threaded holes are connected with a bidirectional screw, the bidirectional screw is welded by two threaded rods with opposite threads, the bidirectional screw is rotatably connected to the inside of the installation frame, a groove is provided on the side of the movable frame, and the inside of the groove is rotatably connected with a guide wheel, a first motor is installed on the left side of the installation frame, the output shaft of the first motor is fixed to the left end of the bidirectional screw, an extrusion assembly is installed inside the installation frame, the input end of the first motor is electrically connected to the output end of the PLC controller, and the extrusion assembly is guided by setting a guide assembly.

[0008] Furthermore, the extrusion assembly includes a T-shaped block, a second electric telescopic rod, a connecting rod, a strip opening, a U-shaped frame and a connecting plate. A T-shaped block is fixed in the middle of the interior of the installation frame. A through hole is provided on the side of the T-shaped block. The bidirectional screw is located inside the through hole. A second electric telescopic rod is installed on the lower side of the T-shaped block. A connecting rod is fixed on the telescopic arm of the second electric telescopic rod. A strip opening is provided in the middle of the connecting rod. A U-shaped frame is slidably connected to the interior of the strip opening. A connecting plate is fixed to the lower side of the U-shaped frame. The input end of the second electric telescopic rod is electrically connected to the output end of the PLC controller. The elevator car is extruded by setting the extrusion assembly.

[0009] Furthermore, it also includes a measuring component, which includes an extrusion disk and a pressure sensor. The extrusion disk is fixed to the lower end of the connecting rod, and a connecting groove is opened at the upper end of the connecting disk. The pressure sensor is installed inside the connecting groove. The pressure sensor corresponds to the extrusion disk, and the pressure sensor is bidirectionally electrically connected to the PLC controller. The extrusion pressure is measured by setting the measuring component.

[0010] Furthermore, the power assembly includes a second motor, a gear column and a gear plate. The second motor is installed on the rear side of the sliding frame. A gear column is fixed on the output shaft of the second motor. A gear plate is fixed on the right side inside the fixed frame. The gear column is meshed with the gear plate. The input end of the second motor is electrically connected to the output end of the outsourced PLC controller, and the sliding frame is driven to move by setting the power assembly.

[0011] Furthermore, two corresponding fixing frames are fixed on the left and right sides of the fixing frame, two corresponding universal wheels are installed on the lower side of the fixing frames, and brake plates are installed on the sides of the universal wheels. By setting the universal wheels, users can move the fixing frame very conveniently.

[0012] Furthermore, an anti-skid pad is fixed to the lower end of the extrusion plate, and evenly distributed anti-skid grooves are opened at the lower end of the anti-skid pad. The stability of the extrusion plate can be effectively guaranteed by providing the anti-skid pad.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the counterweight device for detecting the load of the freight elevator car has the following advantages:

[0014] By setting the universal wheel, the user can easily push the fixed frame to the door of the elevator car, and then push the extrusion assembly into the interior of the elevator car. After pushing, the power assembly is started to move the sliding frame downward to drive the connecting plate downward to contact the bottom of the elevator car. After contact, the second electric telescopic rod is started to drive the extrusion plate downward to drive the connecting plate downward to apply pressure to the bottom of the elevator car. When the elevator car alarms, the load of the elevator car can be known by observing the value tested by the pressure sensor. The whole process does not require transportation and it is very convenient to avoid damaging the elevator car. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the guide assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the extrusion assembly of the utility model.

[0018] In the figure: 1 fixed frame, 2 sliding frame, 3 first electric telescopic rod, 4 guide assembly, 41 installation frame, 42 moving frame, 43 bidirectional screw, 44 guide wheel, 45 first motor, 5 extrusion assembly, 51 T-shaped block, 52 second electric telescopic rod, 53 connecting rod, 54 strip mouth, 55 U-shaped frame, 56 connecting plate, 6 measuring assembly, 61 extrusion plate, 62 pressure sensor, 7 power assembly, 71 second motor, 72 gear column, 73 gear plate, 8 fixed frame, 9 universal wheel, 10 brake plate, 11 anti-slip pad, 12 PLC controller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 ,This embodiment provides a technical solution: a counterweight device for detecting the load of a freight elevator car, comprising a fixed frame 1 and a guide assembly 4;

[0021] Fixed frame 1: A sliding frame 2 is slidably connected on the side, a PLC controller 12 is installed on the left side of the fixed frame 1, and the input end of the PLC controller 12 is electrically connected to the output end of the external power supply. A first electric telescopic rod 3 is installed on the front side of the sliding frame 2, and a power assembly 7 is installed inside the sliding frame 2. The power assembly 7 includes a second motor 71, a gear column 72 and a gear plate 73. A second motor 71 is installed on the rear side of the sliding frame 2, and a gear column 72 is fixed on the output shaft of the second motor 71. A gear plate 73 is fixed on the right side inside the fixed frame 1, and the gear column 72 is meshed with the gear plate 73. The input end of the second motor 71 is electrically connected to the output end of the outsourced PLC controller, and the sliding frame 2 is driven to move by setting the power assembly 7;

[0022] Guide assembly 4: includes mounting frame 41, moving frame 42, bidirectional screw 43, guide wheel 44 and first motor 45, the mounting frame 41 is fixed on the telescopic arm of the first electric telescopic rod 3, the interior of the mounting frame 41 is slidably connected with two corresponding moving frames 42, the side of the moving frame 42 is provided with a threaded hole, the two threaded holes have opposite threads, the internal threads of the two threaded holes are connected with a bidirectional screw 43, the bidirectional screw 43 is welded by two threaded rods with opposite threads, the bidirectional screw 43 is rotatably connected to the inside of the mounting frame 41, the side of the moving frame 42 is provided with a groove, the inside of the groove is rotatably connected with the guide wheel 44, the left side of the mounting frame 41 is installed with a first motor 45, the output shaft of the first motor 45 is fixed to the left end of the bidirectional screw 43, the inside of the mounting frame 41 is installed with an extrusion assembly 5, the input end of the first motor 45 is electrically connected to the output end of the PLC controller 12, the extrusion assembly 5 includes a T-shaped block 51, a second electric telescopic rod 52, a connecting rod 53, a strip-shaped mouth 54, a U-shaped frame 55 and a connecting plate 56, the inside of the mounting frame 41 A T-shaped block 51 is fixed in the middle, a through hole is provided on the side of the T-shaped block 51, a bidirectional screw 43 is located inside the through hole, a second electric telescopic rod 52 is installed on the lower side of the T-shaped block 51, a connecting rod 53 is fixed on the telescopic arm of the second electric telescopic rod 52, a strip opening 54 is provided in the middle of the connecting rod 53, a U-shaped frame 55 is slidably connected inside the strip opening 54, a connecting plate 56 is fixed on the lower side of the U-shaped frame 55, the input end of the second electric telescopic rod 52 is electrically connected to the output end of the PLC controller 12, and a measuring group is also included. Part 6, the measuring component 6 includes an extrusion disk 61 and a pressure sensor 62, the extrusion disk 61 is fixed to the lower end of the connecting rod 53, a connecting groove is opened at the upper end of the connecting disk 56, a pressure sensor 62 is installed inside the connecting groove, the pressure sensor 62 corresponds to the extrusion disk 61, the pressure sensor 62 is bidirectionally electrically connected to the PLC controller 12, the extrusion pressure is measured by setting the measuring component 6, the elevator car is squeezed by setting the extrusion component 5, and the extrusion component 5 is guided by setting the guide component 4.

[0023] Wherein: two corresponding fixing frames 8 are fixed on the left and right sides of the fixing frame 1, two corresponding universal wheels 9 are installed on the lower side of the fixing frame 8, and brake plates 10 are installed on the sides of the universal wheels 9. By setting the universal wheels 9, the user can move the fixing frame 1 very conveniently.

[0024] Wherein: an anti-skid pad 11 is fixed to the lower end of the extrusion plate 61 , and evenly distributed anti-skid grooves are opened at the lower end of the anti-skid pad 11 . The stability of the extrusion plate 61 can be effectively guaranteed by providing the anti-skid pad 11 .

[0025] The working principle of a counterweight device for load detection of a freight elevator car provided by the utility model is as follows: first, the fixed frame 1 is pushed to move and move it to the door of the elevator car, and then the first electric telescopic rod 3 is started to move the guide assembly 4 and the extrusion assembly 5. When they move to the interior of the elevator car, the first electric telescopic rod 3 is closed, and at this time, the first motor 45 is started to rotate the bidirectional screw 43 to drive the two moving frames 42 to move. At this time, the two guide wheels 44 are observed. When the two guide wheels 44 are in contact with the inner wall of the elevator car, the first motor 45 is closed, and then the second motor 71 is started The tooth column 72 rotates, and the rotation of the tooth column 72 drives the sliding frame 2 to move along the fixed frame 1 under the action of the tooth plate 73. The movement of the sliding frame 2 drives the connecting plate 56 to move downward. When the connecting plate 56 contacts the bottom of the elevator car downward, the second motor 71 is turned off, and then the second electric telescopic rod 52 is started to make the extrusion plate 61 drive the connecting plate 56 downward to apply pressure to the bottom of the elevator car. When the elevator car alarms, the load of the elevator car can be obtained by observing the value tested by the pressure sensor 62. The whole process does not require transportation, and it is very convenient to avoid damaging the elevator car.

[0026] It is worth noting that the PLC controller 12 disclosed in the above embodiment is specifically a Siemens S7-200 model, the first motor 45 and the second motor 71 can use 1LE0003 three-phase asynchronous motors, the first electric telescopic rod 3 and the second electric telescopic rod 52 can use TGC-A high-thrust electric telescopic rods, and the pressure sensor 62 can use DP-101 pressure sensor. The PLC controller 12 controls the first motor 45, the second motor 71, the first electric telescopic rod 3 and the second electric telescopic rod 52 to work using methods commonly used in the prior art.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A counterweight device for detecting the load of a freight elevator car, characterized in that: It comprises a fixed frame (1) and a guide component (4); A fixed frame (1): a sliding frame (2) is slidably connected to the side surface, a PLC controller (12) is installed on the left side of the fixed frame (1), an input end of the PLC controller (12) is electrically connected to the output end of an external power supply, a first electric telescopic rod (3) is installed on the front side of the sliding frame (2), and a power assembly (7) is installed inside the sliding frame (2); The guide assembly (4) comprises a mounting frame (41), a movable frame (42), a bidirectional screw (43), a guide wheel (44) and a first motor (45). The mounting frame (41) is fixed on the telescopic arm of the first electric telescopic rod (3). Two corresponding movable frames (42) are slidably connected inside the mounting frame (41). The side of the movable frame (42) is provided with a threaded hole. The threads of the two threaded holes are opposite to each other. The internal threads of the two threaded holes are connected to the bidirectional screw (43). The bidirectional screw (43) is composed of two opposite threads. The two-way screw rod (43) is welded together, the two-way screw rod (43) is rotatably connected to the inside of the installation frame (41), a groove is provided on the side of the movable frame (42), a guide wheel (44) is rotatably connected to the inside of the groove, a first motor (45) is installed on the left side of the installation frame (41), the output shaft of the first motor (45) is fixed to the left end of the two-way screw rod (43), an extrusion assembly (5) is installed inside the installation frame (41), and the input end of the first motor (45) is electrically connected to the output end of the PLC controller (12).

2. A counterweight device for detecting a load in a freight elevator car according to claim 1, characterized in that: The extrusion assembly (5) comprises a T-shaped block (51), a second electric telescopic rod (52), a connecting rod (53), a strip-shaped opening (54), a U-shaped frame (55) and a connecting plate (56). The T-shaped block (51) is fixed in the middle of the installation frame (41). A through hole is provided on the side of the T-shaped block (51). The bidirectional screw (43) is located inside the through hole. The second electric telescopic rod (52) is installed on the lower side of the T-shaped block (51). A connecting rod (53) is fixed on the telescopic arm of the second electric telescopic rod (52). A strip-shaped opening (54) is provided in the middle of the connecting rod (53). The inside of the strip-shaped opening (54) is slidably connected to a U-shaped frame (55). A connecting plate (56) is fixed on the lower side of the U-shaped frame (55). The input end of the second electric telescopic rod (52) is electrically connected to the output end of the PLC controller (12).

3. A counterweight device for detecting a load in a freight elevator car according to claim 2, characterized in that: The device also comprises a measuring assembly (6), wherein the measuring assembly (6) comprises an extrusion disk (61) and a pressure sensor (62); the extrusion disk (61) is fixed to the lower end of the connecting rod (53); a connecting groove is provided at the upper end of the connecting disk (56); a pressure sensor (62) is installed inside the connecting groove; the pressure sensor (62) corresponds to the extrusion disk (61); and the pressure sensor (62) is bidirectionally electrically connected to the PLC controller (12).

4. A counterweight device for detecting a load in a freight elevator car according to claim 1, characterized in that: The power assembly (7) comprises a second motor (71), a gear column (72) and a tooth plate (73); the second motor (71) is installed on the rear side of the slide frame (2); a gear column (72) is fixed on the output shaft of the second motor (71); a tooth plate (73) is fixed on the right side inside the fixed frame (1); the gear column (72) is meshed with the tooth plate (73); and the input end of the second motor (71) is electrically connected to the output end of an outsourced PLC controller.

5. A counterweight device for detecting a load in a freight elevator car according to claim 1, characterized in that: Two corresponding fixing frames (8) are fixed on the left and right sides of the fixing frame (1), two corresponding universal wheels (9) are installed on the lower side of the fixing frame (8), and brake plates (10) are installed on the sides of the universal wheels (9).

6. A counterweight device for detecting a load in a freight elevator car according to claim 3, characterized in that: An anti-skid pad (11) is fixed to the lower end of the squeezing plate (61), and evenly distributed anti-skid grooves are provided at the lower end of the anti-skid pad (11).

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