Hydraulic cylinder lifting detection device, double hydraulic cylinder synchronous motion device and bed frame type edible mushroom cultivation feeding device

Abstract

The utility model provides a kind of hydraulic cylinder lifting detection device, double hydraulic cylinder synchronous motion device and bed frame formula edible mushroom cultivation feeding device. Among them, hydraulic cylinder lifting detection device, including hydraulic cylinder, hydraulic cylinder has telescopic rod;Fixed stand, fixed stand is spaced apart with hydraulic cylinder;Pull rope encoder, pull rope encoder is installed on fixed stand, and the opening of pull rope encoder is towards fixed stand;Fixed pulley, fixed pulley is fixed on fixed stand, and the moving end of pull rope encoder is connected with the top of telescopic rod by passing fixed pulley, and the lifting speed of hydraulic cylinder can be detected by the displacement variation of pull rope encoder. Double hydraulic cylinder synchronous motion device with two sets of hydraulic cylinder lifting detection device, the speed and position of two hydraulic cylinders can be compared, the control of hydraulic cylinder movement speed and position is realized, the synchronization of two hydraulic cylinder operation process is achieved, and the stability of lifting is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of lifting and feeding devices, and in particular to a hydraulic cylinder lifting and detection device, a dual hydraulic cylinder synchronous motion device, and a bed frame type edible fungus cultivation feeding device. Background Technology

[0002] For single hydraulic cylinder lifting control, it is necessary to detect its lifting speed and consider the usage scenarios and lifespan of its components.

[0003] For a dual-hydraulic-cylinder synchronous motion device, the movement of the two hydraulic cylinders needs to be precisely controlled to ensure that they can always be synchronized during operation, adapting to fields with high consistency requirements.

[0004] The bed-frame type edible mushroom cultivation feeding device contains two sets of hydraulic cylinder motion devices. Due to the difference in load during the lifting process of the feeding equipment itself, and abnormal factors such as interference, the lifting of the two hydraulic cylinders will be inconsistent during actual use, and the device will have an overall tilt problem. Utility Model Content

[0005] To address at least one technical problem in the background art, this utility model provides a hydraulic cylinder lifting detection device, comprising:

[0006] A hydraulic cylinder having a telescopic rod;

[0007] A fixed column is provided, which is spaced apart from the hydraulic cylinder;

[0008] A pull-cord encoder, wherein the pull-cord encoder is mounted on the fixed column and the opening of the pull-cord encoder faces the fixed column;

[0009] A fixed pulley is fixed to the fixed column. The moving end of the pull rope encoder passes around the fixed pulley and is connected to the top of the telescopic rod. The lifting speed of the hydraulic cylinder can be detected by the displacement change of the pull rope encoder.

[0010] The pull-cord encoder uses an inverted installation method to prevent dirt and rainwater from entering the encoder through the cable take-up hole. The pull cord changes the direction of movement through a fixed pulley and connects to the top of the telescopic rod.

[0011] When the hydraulic cylinder operates, the telescopic rod extends, driving the rope encoder to move. The rope encoder can measure the speed and position of the rope movement, thereby detecting the lifting speed of the hydraulic cylinder.

[0012] Optionally, the moving end of the pull rope encoder is connected to the top of the telescopic rod via a connecting ring. Specifically, one or more circular connecting rings can be used. Using a connecting ring reduces wear on the pull rope.

[0013] Optionally, the top of the telescopic rod is provided with an extension plate perpendicular to the telescopic rod, and the moving end of the pull rope encoder is connected to the extension plate through a connecting ring.

[0014] Furthermore, a lifting ring is provided on the side of the extended plate near the fixed column, and the connecting ring is connected to the telescopic rod through the lifting ring to further prevent wear on the pull rope.

[0015] In one possible embodiment, the lifting ring is made of stainless steel, and the lifting ring is connected to the protruding plate by means of screws or welding.

[0016] Optionally, the connecting ring is made of 304 stainless steel.

[0017] Optionally, the pull rope of the pull rope encoder is a plastic-coated 304 steel wire rope with a diameter of 1.2mm.

[0018] Optionally, the fixed pulley is a guide wheel with a concave center.

[0019] Furthermore, the hydraulic cylinder lifting detection device also includes a PLC controller, which is connected to the pull rope encoder. The PLC controller can determine the position and speed of the hydraulic cylinder based on the current speed and position of the pull rope detected by the pull rope encoder.

[0020] Furthermore, the hydraulic cylinder lifting detection device also includes a proportional valve, which is connected to both the PLC controller and the hydraulic cylinder. The PLC controller can control the opening degree of the proportional valve to change the oil intake of the hydraulic cylinder, thereby controlling the movement speed and position of the hydraulic cylinder.

[0021] To address at least one technical problem in the background art, a dual hydraulic cylinder synchronous motion device includes two sets of hydraulic cylinder lifting and detection devices as described above, and also includes...

[0022] The PLC controller is connected to the rope encoder of the two hydraulic cylinder lifting detection devices. Each hydraulic cylinder lifting detection device also includes a proportional valve. The two proportional valves are respectively connected to the corresponding hydraulic cylinders. The two proportional valves are connected to the same PLC controller. The PLC controller can control the opening degree of the two proportional valves to change the oil supply of the corresponding hydraulic cylinder, thereby controlling the movement speed and position of the two hydraulic cylinders and achieving synchronization of the operation of the two hydraulic cylinders.

[0023] Specifically, the PLC controller acquires the current value of the rope encoder and compares it with the current values ​​of the rope encoders of the two hydraulic cylinders. These current values ​​include both speed and displacement. Based on the difference between the two values, the opening of the proportional valve is adjusted. During the ascent, the opening of the proportional valve of the faster-rising hydraulic cylinder is adjusted to make its speed equal to that of the slower-rising cylinder. During the descent, the opening of the proportional valve of the faster-falling hydraulic cylinder is adjusted to make its speed equal to that of the slower-falling hydraulic cylinder. The proportional valve controls the lifting and lowering speeds of the two hydraulic cylinders to remain consistent.

[0024] Optionally, the draw-wire encoder has a 485 interface, and the PLC controller has a 485 interface and an analog module. The 485 interfaces of the two draw-wire encoders are connected to the 485 interface of the PLC controller, and the analog module of the PLC controller is connected to the two proportional valves. The hydraulic cylinder controls the lifting process through the proportional valves. Based on the received feedback data, the PLC controller changes the output value of the analog module through a control algorithm, thereby changing the opening of the proportional valves and achieving synchronization of the two hydraulic cylinders. When the hydraulic cylinder rises, it drives the draw-wire encoder to extend the draw-wire. The draw-wire encoder outputs the current draw-wire position information through the 485 bus. The position information is read every 100ms. The rate of change can be obtained by subtracting the previous and current position information.

[0025] Optionally, the PLC controller outputs a linear 0-10V voltage to control the opening of the proportional valve, change the oil supply to the hydraulic cylinder, and realize the control of the hydraulic cylinder's movement speed and position.

[0026] To address at least one technical problem in the background art, this utility model also provides a bed-frame type edible mushroom cultivation feeding device, which utilizes the aforementioned dual hydraulic cylinder synchronous motion device. This device can solve the problem of inconsistent lifting and lowering of the two hydraulic cylinders and overall equipment tilting during the lifting process, taking into account factors such as load differences and interference during the lifting process of the feeding equipment itself.

[0027] Implementing the embodiments of this utility model has the following beneficial effects:

[0028] (1) This utility model provides a hydraulic cylinder lifting detection device. When the hydraulic cylinder is working, the telescopic rod extends and drives the rope encoder to move. The rope encoder can measure the speed and position of the rope movement, thereby realizing the detection of the lifting speed of the hydraulic cylinder through the rope encoder. The rope encoder adopts an inverted installation method to avoid dirt and rainwater from entering the encoder through the wire take-up hole.

[0029] (2) This utility model also provides a dual hydraulic cylinder synchronous motion device, including two sets of hydraulic cylinder lifting detection devices, and the two sets of hydraulic cylinder lifting detection devices share a PLC controller. The PLC controller can compare the speed and position of the two hydraulic cylinders, and change the oil supply of the hydraulic cylinders by controlling the opening of the two proportional valves, so as to realize the control of the speed and position of the hydraulic cylinders, achieve synchronization of the operation of the two hydraulic cylinders, and further avoid the problem of tilting during the lifting process caused by load fluctuation and mechanical error, thus ensuring the smoothness of lifting.

[0030] (3) This utility model provides a bed-frame type edible fungus cultivation feeding device, which uses the aforementioned dual hydraulic cylinder synchronous motion device. This device can solve the problem of inconsistent lifting and lowering of the two hydraulic cylinders and overall tilting of the equipment during the lifting and lowering process, based on the load difference and interference abnormal factors of the feeding equipment itself. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the hydraulic cylinder lifting detection device of this utility model;

[0032] Figure 2 This is a schematic diagram of the dual hydraulic cylinder synchronous motion device of the present invention;

[0033] Figure 3 This is a schematic diagram of the control circuit of the dual hydraulic cylinder synchronous motion device of this utility model.

[0034] Figure 4 This is a schematic diagram of a bed-frame type edible mushroom cultivation feeding device according to the present invention.

[0035] The attached figures are labeled as follows:

[0036] 1-Hydraulic cylinder, 11-Telescopic rod, 12-Extended plate;

[0037] 2-Fixed column; 3-Pull rope encoder; 31-Pull rope;

[0038] 4-Fixed pulley; 5-Connecting ring; 6-Lifting ring; 7-PLC controller; 8-Proportional valve; 9-Oil tank; 10-Oil pump; 13-Relief valve. Detailed Implementation

[0039] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0040] Example:

[0041] This embodiment provides a hydraulic cylinder lifting detection device, as shown in the attached figure. Figure 1 As shown, it includes:

[0042] Hydraulic cylinder 1, wherein the hydraulic cylinder 1 has a telescopic rod 11;

[0043] Fixed column 2, which is spaced apart from hydraulic cylinder 1;

[0044] A pull-rope encoder 3 is mounted on the fixed column 2, and the opening of the pull-rope encoder 3 faces the fixed column 2.

[0045] A fixed pulley 4 is fixed on the fixed column 2. The moving end of the pull rope encoder 3 passes around the fixed pulley 4 and is connected to the top of the telescopic rod 11. The lifting speed of the hydraulic cylinder 1 can be detected by the displacement change of the pull rope encoder 3.

[0046] The pull-rope encoder 3 is installed in an inverted manner to prevent dirt and rainwater from entering the encoder through the wire take-up hole. The pull rope 31 changes the direction of movement through the fixed pulley 4 and is connected to the top of the telescopic rod 11.

[0047] When the hydraulic cylinder 1 is working, the telescopic rod 11 extends, driving the pull rope 31 of the pull rope encoder 3 to move. The pull rope encoder 3 can measure the movement speed and position of the pull rope 31, thereby realizing the detection of the lifting speed of the hydraulic cylinder 1 through the pull rope encoder 3.

[0048] In one possible embodiment, referring to Figure 1, the moving end of the pull rope encoder 3 is connected to the top end of the telescopic rod 11 via a connecting ring 5. Specifically, one or more circular connecting rings 5 ​​can be used. Using the connecting ring 5 reduces wear on the pull rope 31.

[0049] In one possible embodiment, referring to Figure 1, a protruding plate 12 perpendicular to the top of the telescopic rod 11 is provided, and the moving end of the pull rope encoder 3 is connected to the protruding plate 12 via a connecting ring 5. Specifically, a lifting ring 6 can be provided on the side of the protruding plate 12 near the fixed column 2, and the connecting ring 5 is connected to the telescopic rod 11 via the lifting ring 6, further preventing wear on the pull rope 31.

[0050] In one possible embodiment, the lifting ring 6 is made of stainless steel, and the lifting ring 6 is connected to the protruding plate 12 by means of screws or welding.

[0051] In one possible embodiment, the connecting ring 5 is made of 304 stainless steel.

[0052] In one possible embodiment, the pull rope 31 of the pull rope encoder 3 is a plastic-coated 304 steel wire rope with a diameter of 1.2 mm.

[0053] In one possible embodiment, the fixed pulley 4 is a guide wheel with a concave center.

[0054] In one possible embodiment, the hydraulic cylinder lifting detection device further includes a PLC controller 7, which is connected to the pull rope encoder 3. The PLC controller 7 can determine the position and speed of the hydraulic cylinder 1 based on the current speed and position of the pull rope 31 detected by the pull rope encoder 3.

[0055] In one possible embodiment, the hydraulic cylinder lifting detection device further includes a proportional valve 8, which is connected to both the PLC controller 7 and the hydraulic cylinder 1. The PLC controller 7 can control the opening of the proportional valve 8 to change the oil intake of the hydraulic cylinder 1, thereby controlling the movement speed and position of the hydraulic cylinder 1.

[0056] In one possible embodiment, such as Figure 2 As shown, Figure 2 The illustration only shows a single-sided detection device. This invention also provides a dual-hydraulic-cylinder synchronous motion device, comprising two sets of hydraulic cylinder lifting detection devices as described in the preceding embodiments. The two sets of hydraulic cylinder lifting detection devices can share a PLC controller 7 or a new PLC controller 7 can be added and connected to the original two controllers. The PLC controller 7 can compare the speed and position of the two hydraulic cylinders 1, and by controlling the opening degree of the two proportional valves 8, change the oil intake of the hydraulic cylinders 1, thereby controlling the speed and position of the hydraulic cylinders 1 and achieving synchronization of the two hydraulic cylinders 1 during operation.

[0057] Specifically, the PLC controller 7 acquires the current value of the rope encoder 3 and compares it with the current values ​​of the rope encoders 3 of the two hydraulic cylinders 1. The current values ​​include both speed and displacement values. Based on the difference between the two values, the opening of the proportional valve 8 is adjusted. During the ascent, the opening of the proportional valve 8 of the faster-rising hydraulic cylinder 1 is adjusted to make its speed equal to that of the slower-rising hydraulic cylinder 1. During the descent, the opening of the proportional valve 8 of the faster-rising hydraulic cylinder 1 is adjusted to make its speed equal to that of the slower-rising hydraulic cylinder 1. The proportional valve 8 controls the lifting and lowering speeds of the two hydraulic cylinders 1 to remain consistent.

[0058] In one possible embodiment, such as Figure 3 As shown, the pull-cord encoder 3 has a 485 interface, the PLC controller 7 has a 485 interface and an analog module, the 485 interfaces of the two pull-cord encoders 3 are connected to the 485 interface of the PLC controller 7, and the analog module of the PLC controller 7 is connected to the two proportional valves 8.

[0059] Specifically, hydraulic cylinder 1 controls the lifting process through proportional valve 8. PLC controller 7 changes the output value of analog module according to the received feedback data and through control algorithm, thereby changing the opening degree of proportional valve 8 and realizing the synchronization of the two hydraulic cylinders 1.

[0060] Specifically, such as Figure 3 As shown, when hydraulic cylinder 1 rises, it causes the pull rope 31 of pull rope encoder 3 to extend. Pull rope encoder 3 outputs the current position information of pull rope 31 via a 485 bus. The position information is read every 100ms. The rate of change can be calculated by subtracting the previous and current position information.

[0061] Specifically, the PLC controller 7 outputs a linear 0-10V voltage to control the opening of the proportional valve 8, thereby changing the oil intake of the hydraulic cylinder 1 and controlling the movement speed and position of the hydraulic cylinder 1.

[0062] In one possible embodiment, such as Figure 3 As shown, a dual hydraulic cylinder synchronous motion device further includes an oil tank 9, an oil pump 10, and an overflow valve 13. One end of the oil pump 10 is connected to the oil tank 9, and the other end is connected to the proportional valve 8. The overflow valve 13 is disposed on the pipeline connecting the oil pump 10 and the proportional valve 8.

[0063] In one possible embodiment, the present invention also provides a bed-frame type edible mushroom cultivation feeding device, which applies the dual hydraulic cylinder synchronous motion device described in the foregoing embodiments, such as... Figure 4 As shown, this device can solve the problem of inconsistent lifting between the two hydraulic cylinders and overall equipment tilting during the lifting process of the feeding equipment, based on the load differences and abnormal factors such as interference.

[0064] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hydraulic cylinder lifting detection device, characterized in that, include: Hydraulic cylinder (1), the hydraulic cylinder (1) having a telescopic rod (11); A fixed column (2) is provided, which is spaced apart from the hydraulic cylinder (1); A pull-rope encoder (3) is mounted on the fixed column (2), and the opening of the pull-rope encoder (3) faces the fixed column (2). A fixed pulley (4) is fixed on the fixed column (2). The moving end of the pull rope encoder (3) passes around the fixed pulley (4) and is connected to the top of the telescopic rod (11). The lifting speed of the hydraulic cylinder (1) can be detected by the displacement change of the pull rope encoder (3).

2. The hydraulic cylinder lifting detection device according to claim 1, characterized in that, The moving end of the pull-rope encoder (3) is connected to the top end of the telescopic rod (11) via a connecting ring (5).

3. The hydraulic cylinder lifting detection device according to claim 2, characterized in that, The top of the telescopic rod (11) is provided with an extension plate (12) perpendicular to the telescopic rod (11), and the moving end of the rope encoder (3) is connected to the extension plate (12) through a connecting ring (5).

4. The hydraulic cylinder lifting detection device according to claim 3, characterized in that, A lifting ring (6) is provided on the side of the protruding plate (12) near the fixed column (2), and the connecting ring (5) is connected to the telescopic rod (11) through the lifting ring (6).

5. The hydraulic cylinder lifting detection device according to claim 1, characterized in that, The fixed pulley (4) is a guide wheel with a concave shape in the middle.

6. The hydraulic cylinder lifting detection device according to claim 1, characterized in that, The PLC controller (7) is connected to the pull rope encoder (3). The PLC controller (7) can determine the position and speed of the hydraulic cylinder (1) based on the speed and position of the current pull rope (31) detected by the pull rope encoder (3).

7. The hydraulic cylinder lifting detection device according to claim 6, characterized in that, The hydraulic cylinder lifting detection device also includes a proportional valve (8), which is connected to the PLC controller (7) and the hydraulic cylinder (1) respectively. The PLC controller (7) can control the opening of the proportional valve (8) to change the oil intake of the hydraulic cylinder (1), thereby controlling the movement speed and position of the hydraulic cylinder (1).

8. A dual hydraulic cylinder synchronous motion device, characterized in that, Includes two sets of hydraulic cylinder lifting detection devices as described in any one of claims 1-5, and further includes, The PLC controller (7) is connected to the rope encoder (3) of the two hydraulic cylinder lifting detection devices. Each of the hydraulic cylinder lifting detection devices also includes a proportional valve (8). The two proportional valves (8) are respectively connected to the corresponding hydraulic cylinder (1). The two proportional valves (8) are connected to the same PLC controller (7). The PLC controller (7) can control the opening degree of the two proportional valves (8) to change the oil intake of the corresponding hydraulic cylinder (1), thereby controlling the movement speed and position of the two hydraulic cylinders (1).

9. A dual hydraulic cylinder synchronous motion device according to claim 8, characterized in that, The pull-cord encoder (3) has a 485 interface, the PLC controller (7) has a 485 interface and an analog module, the 485 interfaces of the two pull-cord encoders (3) are connected to the 485 interface of the PLC controller (7), and the analog module of the PLC controller (7) is connected to the two proportional valves (8); and / or, The dual hydraulic cylinder synchronous motion device also includes an oil tank (9), an oil pump (10), and an overflow valve (13). One end of the oil pump (10) is connected to the oil tank (9), and the other end is connected to the proportional valve (8). The overflow valve (13) is located on the pipeline connecting the oil pump (10) and the proportional valve (8).

10. A bed-frame type edible mushroom cultivation feeding device, characterized in that, The dual hydraulic cylinder synchronous motion device according to any one of claims 8-9 is applied.

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