Multi-point synchronous lifting and weight measurement system

Abstract

The present invention discloses a multi-point synchronous jacking and weight metering system, which includes a shell, wherein a plurality of variable frequency motors are fixedly installed inside the shell, the output end of the variable frequency motor is electrically connected to a balancing valve, the top of the balancing valve is electrically connected to a reversing valve, the top of the reversing valve is electrically connected to a pressure gauge, the outer surface of the balancing valve is electrically connected to a pressure sensor, and an operation panel is fixedly installed on the top of the shell. The multi-point synchronous jacking and weight metering system of the present invention first utilizes hydraulic drive, pressure and displacement closed-loop automatic control to achieve multi-point control of the jack, and through the synchronous jacking system, it can perform heavy-load weighing, synchronous jacking, and synchronous lowering effects on the load, and at the same time adopts a variable frequency speed regulator to control the oil pump motor, and relies on adjusting the power supply frequency to change the speed of the variable frequency motor, so as to accurately control the extension and retraction speed of the jack and achieve synchronous control of the jack.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, in particular to a multi-point synchronous lifting and weight measurement system. Background Art

[0002] The multi-point synchronous weighing hydraulic control system uses large-tonnage and large-stroke hydraulic cylinders to achieve the overall jacking and lowering of structural parts, reads the weight data of the weighing sensor attached to the jack, and accurately determines the weight of the structural parts. By setting the coordinates of each point and combining it with the weight of the corresponding point, the center of gravity coordinates of the structural parts are automatically calculated.

[0003] The current weighing hydraulic control system consists of a control system, a drive system, and an energy system. The control system consists of a controller and a feedback system. The main controller uses an imported Siemens PLC and an industrial computer as the display component. The feedback system is composed of multiple pressure sensors, displacement sensors, and weighing sensors to form a feedback closed-loop system. However, the existing weighing hydraulic control system still has some problems in actual use:

[0004] 1. When using the existing weighing hydraulic control system, a jack is usually used to detect the detailed weighing data of the workpiece. However, the data structure obtained in this way is difficult to be accurate, and the center of gravity of the workpiece cannot be determined, which causes problems in subsequent processing. At the same time, the existing weighing hydraulic control system is difficult to accurately control the pressure and displacement, making it impossible to guarantee data accuracy when measuring the workpiece.

[0005] 2. When using the existing weighing hydraulic control system, it is usually necessary to set up multiple pump station data structures and electrically connect the data body of the jack to facilitate the control of the jack. However, when inserting the cable connector into the pump station data structure, due to the excessive number of pump station data connectors, the cable connector is prone to misconnection during connection, which can easily affect the use of the weighing hydraulic control system and even cause an electrical short circuit inside the weighing hydraulic control system.

[0006] 3. When using the existing weighing hydraulic control system, the workpiece is usually placed on the output end of the jack, and the weight of the workpiece is calculated by the pressure detected by the jack. However, when using this method, due to the unstable surface shape of the workpiece, it is difficult for the workpiece to fully contact the output end of the jack, making it difficult to achieve accurate detection of the workpiece. In addition, the jack is prone to damage the uneven workpiece during detection. Summary of the Invention

[0007] The object of the present invention is to provide a multi-point synchronous lifting and weight measurement system to solve the problems raised in the above background technology.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multi-point synchronous lifting and weight measurement system, comprising a housing, a plurality of variable frequency motors fixedly installed inside the housing, an output end of the variable frequency motor electrically connected to a balancing valve, a top end of the balancing valve electrically connected to a reversing valve, a top end of the reversing valve electrically connected to a pressure gauge, an outer surface of the balancing valve electrically connected to a pressure sensor, an operation panel fixedly installed on the top end of the housing, the operation panel electrically connected to the variable frequency motor, a plurality of jacks provided on the side of the housing, a displacement sensor and a weighing sensor fixedly installed inside the jacks;

[0009] The outer surface of the shell is provided with a plurality of pump station data interfaces, a slide is slidably installed inside the pump station data interface, a first rack is fixedly installed on the lower surface of the slide, a plurality of sliders are slidably penetrated on the surface of the shell close to the pump station data interface, a push rod is fixedly installed on the surface of the slider close to the shell, a second rack is fixedly installed on the top of the push rod, a gear is rotatably installed inside the shell, and the gear is respectively engaged with the first rack and the second rack;

[0010] The top end of the jack is provided with a sliding sleeve, the top end of the sliding sleeve is fixedly installed with a box body, the interior of the box body is provided with an airbag, the outer surface of the sliding sleeve is fixedly installed with a sleeve, the interior of the sleeve is slidably installed with a movable plate, a spring is fixedly installed between the movable plate and the sleeve, the surface of the movable plate close to the jack is fixedly installed with an insertion rod, the insertion rod is inserted into the output shaft of the jack, the surface of the movable plate away from the insertion rod is fixedly installed with a pull rod, and the pull rod slides through the sleeve.

[0011] As a preferred technical solution of the present invention, a warning light is fixedly installed on the top of the housing, and the warning light is electrically connected to the pressure gauge.

[0012] As a preferred technical solution of the present invention, an observation window is provided on the outer surface of the housing close to the variable frequency motor, and the observation window is made of transparent glass.

[0013] As a preferred technical solution of the present invention, an oil tank is fixedly installed on the side wall of the shell, and an oil cylinder is fixedly installed inside the oil tank, and the oil cylinder is electrically connected to the variable frequency motor.

[0014] As a preferred technical solution of the present invention, a protective shell is provided inside the pump station data interface, and a piston is provided at one end of the protective shell away from the outer shell.

[0015] As a preferred technical solution of the present invention, a first sliding rod and a second sliding rod are fixedly installed inside the housing, and the first sliding rod and the second sliding rod slide through the slide plate and the first rack respectively.

[0016] As a preferred technical solution of the present invention, the outer surface of the jack is electrically connected to a cable body, the free end of the cable body is electrically connected to a cable connector, and the cable connector is inserted into the inside of the pump station data interface.

[0017] As a preferred technical solution of the present invention, the interior of the housing is electrically connected to a second electromagnetic block, the top of the slide is fixedly mounted with a first electromagnetic block, and the first electromagnetic block is magnetically connected to the second electromagnetic block and the cable connector respectively.

[0018] As a preferred technical solution of the present invention, limit plates are fixedly installed on both sides of the airbag, and an elastic soft plate is fixedly installed between the two limit plates.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention sets a variable frequency motor, a reversing valve, a balancing valve and a sensor. When the synchronous jacking system is used, it first uses hydraulic drive, pressure and displacement closed-loop automatic control to realize multi-point control of the jack. The synchronous jacking system can also perform heavy load weighing, synchronous jacking and synchronous lowering on the load. At the same time, a variable frequency speed regulator is used to control the oil pump motor. By adjusting the power supply frequency, the speed of the variable frequency motor is changed to achieve the purpose of continuously adjusting the flow of the oil pump. With appropriate electronic control and detection systems, the extension and retraction speed of the jack can be accurately controlled to realize synchronous control of the jack.

[0021] 2. The present invention sets a first electromagnetic block, a second electromagnetic block, a slide plate, a push rod and a slider, so that when the jack is connected, the cable connector is inserted into the inside of the pump station data connector. At this time, the cable connector drives the slide plate to move, the slide plate drives the push rod to move, the push rod drives the slider to move, and the slider is pushed out, so that it is convenient to know the specific pump station data connector to be inserted, avoiding errors. At the same time, the first electromagnetic block is electrically connected to the second electromagnetic block and the cable connector respectively, so that the cable connector cannot be removed before power is cut off, avoiding the risk of electric shock when removing the cable connector.

[0022] 3. The present invention provides a spring, an insertion rod, a box body, and an airbag, so that when the workpiece needs to be measured and weighed, the airbag can wrap the workpiece of different shapes, so that the workpiece can be placed stably on the output end of the jack, which can improve the stability of the jack's measurement center of gravity. At the same time, through the elastic force of the spring, the insertion rod is inserted into the output shaft of the jack, thereby fixing the box body, increasing the stability of the airbag, and facilitating the disassembly and replacement of the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a side structural schematic diagram of the present invention;

[0025] Figure 3 Schematic diagram of the housing structure of the present invention;

[0026] Figure 4 Schematic diagram of the internal structure of the sleeve of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the pump station data interface of the present invention;

[0028] Figure 6 Schematic diagram of the internal structure of the protective shell of the present invention.

[0029] In the figure: 1. Housing; 201. Frequency conversion motor; 202. Pressure gauge; 203. Reversing valve; 204. Balancing valve; 205. Pressure sensor; 206. Operation panel; 207. Warning light; 208. Pump station data interface; 209. Cable connector; 210. Cable body; 211. Jack; 212. Displacement sensor; 213. Weighing sensor; 301. Piston; 302. Protective housing; 303. First electromagnetic block; 3 04. Slide plate; 305. Second electromagnetic block; 306. First slide bar; 307. Second slide bar; 308. First rack; 309. Gear; 310. Second rack; 311. Push rod; 312. Slider; 401. Sleeve; 402. Box body; 403. Airbag; 404. Elastic soft board; 405. Limit plate; 406. Insert rod; 407. Moving plate; 408. Spring; 409. Pull rod; 410. Sleeve; 5. Fuel tank. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-6 The present invention provides a technical solution for a multi-point synchronous lifting and weight measurement system:

[0032] The multi-point synchronous lifting and weight measurement system includes a shell 1, a plurality of variable frequency motors 201 are fixedly installed inside the shell 1, the output end of the variable frequency motor 201 is electrically connected to a balancing valve 204, the top of the balancing valve 204 is electrically connected to a reversing valve 203, the top of the reversing valve 203 is electrically connected to a pressure gauge 202, the outer surface of the balancing valve 204 is electrically connected to a pressure sensor 205, an operation panel 206 is fixedly installed on the top of the shell 1, the operation panel 206 is electrically connected to the variable frequency motor 201, a plurality of jacks 211 are provided on the side of the shell 1, a displacement sensor 212 and a weighing sensor 213 are fixedly installed inside the jack 211, and the top of the shell 1 A warning light 207 is fixedly installed, and the warning light 207 is electrically connected to the pressure gauge 202. An observation window is provided on the outer surface of the outer shell 1 near the variable frequency motor 201, and the observation window is made of transparent glass. An oil tank 5 is fixedly installed on the side wall of the outer shell 1, and an oil cylinder is fixedly installed inside the oil tank 5, and the oil cylinder is electrically connected to the variable frequency motor 201. The outer surface of the jack 211 is electrically connected to the cable body 210, and the free end of the cable body 210 is electrically connected to the cable connector 209. The cable connector 209 is inserted into the interior of the pump station data interface 208, and the interior of the pump station data interface 208 is provided with a protective shell 302, and a piston 301 is provided at the end of the protective shell 302 away from the outer shell 1.

[0033] The outer surface of the shell 1 is provided with multiple pump station data interfaces 208, and a slide plate 304 is slidably installed inside the pump station data interface 208. A first rack 308 is fixedly installed on the lower surface of the slide plate 304. A plurality of sliders 312 slide through the surface of the shell 1 close to the pump station data interface 208. A push rod 311 is fixedly installed on the surface of the slider 312 close to the shell 1, and a second rack 310 is fixedly installed on the top of the push rod 311. A gear 309 is rotatably installed inside the shell 1, and the gear 309 is respectively engaged with the first rack 308 and the second rack 310. A first slide bar 306 and a second slide bar 307 are fixedly installed inside the shell 1. The first slide bar 306 and the second slide bar 307 slide through the slide plate 304 and the first rack 308 respectively. The interior of the shell 1 is electrically connected to the second electromagnetic block 305, and the top of the slide plate 304 is fixedly installed. The first electromagnetic block 303 is magnetically connected to the second electromagnetic block 305 and the cable connector 209 respectively.

[0034] The top of the jack 211 is provided with a sliding sleeve 401, and a box body 402 is fixedly installed on the top of the sliding sleeve 401. An airbag 403 is arranged inside the box body 402. A sleeve 410 is fixedly installed on the outer surface of the sliding sleeve 401, and a movable plate 407 is slidably installed inside the sleeve 410. A spring 408 is fixedly installed between the movable plate 407 and the sleeve 410. A plug 406 is fixedly installed on the surface of the movable plate 407 close to the jack 211. The plug 406 is inserted into the output shaft of the jack 211. A pull rod 409 is fixedly installed on the surface of the movable plate 407 away from the plug 406. The pull rod 409 slides through the sleeve 410. Limiting plates 405 are fixedly installed on both sides of the airbag 403, and an elastic soft plate 404 is fixedly installed between the two limiting plates 405.

[0035] When used specifically, the multi-point synchronous jacking and weight metering system of the present invention, the pressure sensor 205, weighing sensor 213, and displacement sensor 212 used in the hydraulic station of the synchronous jacking system are all imported control components and domestic high-quality brand sensors, which effectively guarantee the accuracy and quality of the system. In addition, the industrial computer human-machine interface is used as the operating unit, so that various parameters of the system can be set and controlled on the computer, making the system very humanized. The software uses a large number of digital limits and alarm screen prompts. The system automatically handles abnormal conditions that occur during operation and gives alarm prompts, making the operation of the system simpler and safer. The energy system consists of multiple 70Mpa The hydraulic station is used as energy output to make the equipment run stably and reliably. When the synchronous jacking system is used, the hydraulic drive, pressure and displacement closed-loop automatic control method is first used to realize multi-point control of the jack 211, and the synchronous jacking system can perform heavy load weighing, synchronous jacking and synchronous lowering on the load. At the same time, the frequency converter is used to control the frequency conversion motor 201. The frequency of the power supply is adjusted to change the speed of the frequency conversion motor 201, so as to achieve the purpose of continuously adjusting the flow of the oil pump. With appropriate electronic control and detection systems, the extension and retraction speed of the jack 211 can be accurately controlled to realize synchronous control of the jack 211.

[0036] When connecting the jack 211, the cable connector 209 is inserted into the inside of the pump station data connector. At this time, the cable connector 209 contacts the first electromagnetic block 303. At this time, the first electromagnetic block 303 will drive the slide plate 304 to move, the slide plate 304 drives the first rack 308 to move, the first rack 308 drives the gear 309 to rotate, the gear 309 drives the second rack 310 to move, the second rack 310 drives the push rod 311 to move, the push rod 311 drives the slider 312 to move, and the slider 312 is used to eject. The outer surface of the slider 312 is provided with a displacement signal interface and a weighing signal interface, so that it is convenient to know which specific pump station data connector is inserted to avoid errors. At the same time, when the synchronous jacking system is powered on, the first electromagnetic block 303 is electrically connected to the second electromagnetic block 305 and the cable connector 209 respectively, so that the cable connector 209 is affected by magnetic attraction before power is cut off and cannot be removed, thereby avoiding the risk of electric shock when the cable connector 209 is removed.

[0037] When the workpiece needs to be measured and weighed, the box body 402 is first placed on the top of the jack 211, and then the elastic force of the spring 408 is used to insert the rod 406 into the output shaft of the jack 211, thereby fixing the box body 402. At this time, the workpiece is placed on the top of the airbag 403. When it is under pressure, the airbag 403 can wrap workpieces of different shapes, so that the workpiece can be placed stably at the output end of the jack 211, which can improve the stability of the jack 211 in measuring the center of gravity. At the same time, by pulling the pull rod 409, the pull rod 409 drives the movable plate 407 to move, and the movable plate 407 drives the rod 406 to move, so that the rod 406 moves out of the jack 211. At this time, the spring 408 is compressed, and it is convenient to disassemble and replace the airbag 403.

[0038] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0040] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

Claims

1. A multi-point synchronous lifting and weight measurement system, comprising a housing (1), characterized in that: A plurality of variable frequency motors (201) are fixedly installed inside the housing (1), the output end of the variable frequency motor (201) is electrically connected to a balancing valve (204), the top end of the balancing valve (204) is electrically connected to a reversing valve (203), the top end of the reversing valve (203) is electrically connected to a pressure gauge (202), the outer surface of the balancing valve (204) is electrically connected to a pressure sensor (205), an operation panel (206) is fixedly installed on the top end of the housing (1), the operation panel (206) is electrically connected to the variable frequency motor (201), a plurality of jacks (211) are provided on the side of the housing (1), and a displacement sensor (212) and a weighing sensor (213) are fixedly installed inside the jacks (211); The outer surface of the housing (1) is provided with a plurality of pump station data interfaces (208), a slide plate (304) is slidably installed inside the pump station data interface (208), a first rack (308) is fixedly installed on the lower surface of the slide plate (304), a plurality of sliders (312) are slidably penetrated through the surface of the housing (1) close to the pump station data interface (208), a push rod (311) is fixedly installed on the surface of the slider (312) close to the housing (1), a second rack (310) is fixedly installed on the top end of the push rod (311), a gear (309) is rotatably installed inside the housing (1), and the gear (309) is respectively engaged with the first rack (308) and the second rack (310); The top end of the jack (211) is provided with a sliding sleeve (401), the top end of the sliding sleeve (401) is fixedly provided with a box body (402), the interior of the box body (402) is provided with an air bag (403), the outer surface of the sliding sleeve (401) is fixedly provided with a sleeve (410), the interior of the sleeve (410) is slidably provided with a moving plate (407), a spring (408) is fixedly provided between the moving plate (407) and the sleeve (410), a plug rod (406) is fixedly provided on the surface of the moving plate (407) close to the jack (211), the plug rod (406) is inserted into the output shaft of the jack (211), and a pull rod (409) is fixedly provided on the surface of the moving plate (407) away from the plug rod (406), and the pull rod (409) slides through the sleeve (410).

2. The multi-point synchronous lifting and weight measurement system according to claim 1 is characterized in that: A warning light (207) is fixedly mounted on the top of the housing (1), and the warning light (207) is electrically connected to the pressure gauge (202).

3. The multi-point synchronous lifting and weight measurement system according to claim 1 is characterized in that: An observation window is provided on the outer surface of the housing (1) close to the variable frequency motor (201), and the observation window is made of transparent glass.

4. The multi-point synchronous lifting and weight measurement system according to claim 1 is characterized in that: An oil tank (5) is fixedly mounted on the side wall of the housing (1), an oil cylinder is fixedly mounted inside the oil tank (5), and the oil cylinder is electrically connected to the variable frequency motor (201).

5. The multi-point synchronous lifting and weight measurement system according to claim 1 is characterized in that: The pump station data interface (208) is internally sheathed with a protective shell (302), and a piston (301) is provided at one end of the protective shell (302) away from the outer shell (1).

6. The multi-point synchronous lifting and weight measurement system according to claim 1, characterized in that: A first slide bar (306) and a second slide bar (307) are fixedly installed inside the housing (1), and the first slide bar (306) and the second slide bar (307) slide through the slide plate (304) and the first rack (308) respectively.

7. The multi-point synchronous lifting and weight measurement system according to claim 1 is characterized in that: The outer surface of the jack (211) is electrically connected to a cable body (210), and the free end of the cable body (210) is electrically connected to a cable connector (209), and the cable connector (209) is inserted into the pump station data interface (208).

8. The multi-point synchronous lifting and weight measurement system according to claim 7, characterized in that: The interior of the housing (1) is electrically connected to a second electromagnetic block (305), and the top of the slide plate (304) is fixedly mounted with a first electromagnetic block (303), and the first electromagnetic block (303) is magnetically connected to the second electromagnetic block (305) and the cable connector (209).

9. The multi-point synchronous lifting and weight measurement system according to claim 1, characterized in that: Limiting plates (405) are fixedly mounted on both sides of the airbag (403), and an elastic soft plate (404) is fixedly mounted between the two limiting plates (405).

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