A long-stroke double-support hydraulic cylinder capable of real-time monitoring of support load

Abstract

This utility model discloses a long-stroke double-support hydraulic cylinder capable of real-time monitoring of support load, relating to the field of hydraulic cylinder technology. The long-stroke double-support hydraulic cylinder includes a hydraulic cylinder body, which includes a cylinder barrel. A piston rod is disposed within the inner cavity of the cylinder barrel. A positioning assembly is fixedly disposed at the bottom end of the cylinder barrel. A pressure sensor is disposed at the top end of the piston rod. A lifting assembly is disposed at the top end of the pressure sensor and is connected to the piston rod. A double-support assembly is disposed on the outer side of the cylinder barrel, with its bottom end connected to the top surface of the positioning assembly. This utility model can monitor the load supported by the hydraulic cylinder body, improve its support stability, and issue an alarm when support abnormalities occur, thus improving the safety of the hydraulic cylinder body support.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically a long-stroke double-support hydraulic cylinder that can monitor the support load in real time. Background Technology

[0002] Hydraulic cylinders are one of the core actuators in hydraulic systems, widely used in engineering machinery, agricultural machinery, metallurgical equipment, aerospace, shipbuilding, automated production lines, and other fields. They convert hydraulic energy into mechanical energy to achieve linear reciprocating motion or oscillation, thereby completing various operational tasks. The operation of hydraulic cylinders is based on Pascal's Law, which states that pressure applied in a closed container will be evenly transmitted to all directions of the liquid.

[0003] However, hydraulic cylinders have a simple structure and can only provide simple auxiliary support. As a result, it is impossible to monitor the support load at all times, which reduces the safety and convenience of equipment use. Therefore, we propose a long-stroke double-support hydraulic cylinder that can monitor the support load in real time to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a long-stroke double-support hydraulic cylinder capable of real-time monitoring of support loads. This solves the problem that existing cylinders have simple structures and can only provide simple auxiliary support, thus failing to monitor support loads at all times, thereby reducing the safety and convenience of equipment use.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a long-stroke double-support hydraulic cylinder capable of real-time monitoring of support load, comprising a hydraulic cylinder body, the hydraulic cylinder body comprising a cylinder barrel, a piston rod disposed in the inner cavity of the cylinder barrel, a positioning component fixedly disposed at the bottom end of the cylinder barrel, a pressure sensor disposed at the top end of the piston rod, a lifting component disposed at the top end of the pressure sensor, and the lifting component being connected to the piston rod, a double-support component disposed on the outer side of the cylinder barrel, the bottom end of the double-support component being connected to the top surface of the positioning component;

[0006] The top of the dual support assembly is connected to the bottom surface of the lifting assembly, and a display assembly is provided on one side of the outer wall of the cylinder. The display assembly is electrically connected to the pressure sensor.

[0007] Preferably, the positioning component includes a base disposed on the bottom surface of the cylinder, and the top surface of the base is provided with first slots on both sides for inserting into the bottom surface of the double support component.

[0008] The base has first stepped holes on both sides of its side walls, and mounting holes are provided at the four corners of the top surface of the base.

[0009] Preferably, the lifting assembly includes a top plate, and a retaining ring for engaging the piston rod is fixedly disposed at the middle position of the bottom surface of the top plate. The pressure sensor is located in the inner cavity of the retaining ring. Sliding holes are provided on both side walls of the retaining ring. Limiting screws are inserted into the inner cavities of both sliding holes. One end of the limiting screw is rotatably connected to the piston rod.

[0010] The side wall of the retaining ring and above the sliding hole is provided with a wire hole. The bottom surface of the top plate is provided with second slots on both sides for inserting into the top surface of the double support assembly. The side walls of the top plate are provided with second stepped holes.

[0011] Preferably, the inner diameter of the retaining ring is the same as the outer diameter of the piston rod, and the two are connected by an insertion joint.

[0012] Preferably, the dual support assembly includes a stabilizing frame disposed on the outside of the cylinder. Multiple stabilizing frames are provided. Each stabilizing frame has guide holes on both sides of its top surface. A guide tube is inserted into the inner cavity of each guide hole. A guide post is inserted into the inner cavity of each guide tube. Each stabilizing frame has a first screw hole on each side wall. A first fixing screw is rotatably connected to the inner cavity of each first screw hole. A limiting groove for engaging one end of the first fixing screw is provided on the side wall of each guide tube.

[0013] Each of the guide tubes has a second screw hole on its outer wall near the bottom. A second fixing screw is rotatably connected to the inner cavity of the second screw hole. One end of the second fixing screw passes through the first stepped hole. Each of the guide columns has a third screw hole on its outer wall near the top. A third fixing screw is rotatably connected to the inner cavity of the third screw hole. One end of the third fixing screw passes through the second stepped hole.

[0014] Preferably, the outer diameter of the guide tube is the same as the inner diameter of the first slot, and the outer diameter of the guide post is the same as the inner diameter of the second slot.

[0015] Preferably, the display component includes a bracket disposed on the outer wall of the cylinder, a storage box disposed on the outer wall surface of the bracket, a lid disposed at the open end of the storage box, and a control board disposed in the inner cavity of the storage box;

[0016] The outer wall surface of the box cover is provided with a touch screen, an alarm and a button switch, wherein the touch screen is located above the alarm and the button switch.

[0017] Beneficial effects

[0018] This invention provides a long-stroke double-support hydraulic cylinder capable of real-time monitoring of support load. Compared with the prior art, it has the following advantages:

[0019] This long-stroke, double-support hydraulic cylinder, capable of real-time monitoring of support loads, can be fixed in a designated position via a positioning component, providing an attachment base for the cylinder barrel within the hydraulic cylinder body. This disperses the downward pressure of the cylinder barrel during operation. The lifting component not only rests against the object supported by the hydraulic cylinder body but also houses a pressure sensor. It can also be installed on the top of the piston rod of the hydraulic cylinder body. The operation of the hydraulic cylinder body drives the extension of the piston rod, allowing the piston rod to press against the object supported by the lifting component via the pressure sensor. This provides support for the object and continuously monitors the lifting force exerted by the piston rod on the object under the pressure sensor's monitoring. The pressure sensor then sends the monitoring data to a display component, allowing users to easily view the data and ensuring the stability of the piston rod's lifting force on the object.

[0020] Because a double support assembly is provided on the outside of the cylinder, the bottom end of the double support assembly is connected to the top surface of the positioning assembly, and the top end of the double support assembly is connected to the bottom surface of the lifting assembly, the double support assembly can be installed on the outside of the cylinder and can also extend and retract synchronously while the piston rod extends and retracts, thereby achieving the purpose of attachment support, so as to improve the stability of the piston rod support and improve the safety of the hydraulic cylinder body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the positioning component structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the lifting component structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the dual-support component structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the display component structure of this utility model.

[0028] In the diagram: 1. Hydraulic cylinder body; 2. Positioning assembly; 21. Base; 22. First slot; 23. First stepped hole; 24. Mounting hole; 3. Pressure sensor; 4. Lifting assembly; 41. Top plate; 42. Snap ring; 43. Sliding hole; 44. Limit screw; 45. Wire hole; 46. Second slot; 47. Second stepped hole; 5. Double support assembly; 51. Stabilizing frame; 52. Guide hole; 53. Guide tube; 54. Guide post; 55. First screw hole; 56. First fixing screw; 57. Second screw hole; 58. Second fixing screw; 59. Third screw hole; 510. Third fixing screw; 6. Display assembly; 61. Bracket; 62. Storage box; 63. Box cover; 64. Control board; 65. Touch screen; 66. Alarm; 67. Button switch. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-3 This utility model provides a technical solution: a long-stroke double-support hydraulic cylinder capable of real-time monitoring of support load, comprising a hydraulic cylinder body 1, a cylinder barrel, a piston rod disposed within the inner cavity of the cylinder barrel, a positioning component 2 fixedly disposed at the bottom end of the cylinder barrel, a pressure sensor 3 disposed at the top end of the piston rod, a lifting component 4 disposed at the top end of the pressure sensor 3 and connected to the piston rod, a double-support component 5 disposed on the outer side of the cylinder barrel, the bottom end of the double-support component 5 connected to the top surface of the positioning component 2; the top end of the double-support component 5 connected to the bottom surface of the lifting component 4, and a display component 6 disposed on one side of the outer wall of the cylinder barrel, the display component 6 being electrically connected to the pressure sensor 3.

[0031] Positioning component 2 not only fixes the cylinder in a designated position but also provides an attachment base for the cylinder barrel in the hydraulic cylinder body 1, thereby dispersing the downward pressure of the cylinder barrel during operation. Lifting component 4 not only rests against the object that the hydraulic cylinder body 1 needs to support but also mounts the pressure sensor 3. It can also be installed on the top of the piston rod of the hydraulic cylinder body 1. Then, through the operation of the hydraulic cylinder body 1, the piston rod is driven to extend, allowing the piston rod to press against the object via the pressure sensor 3 and the lifting component 4. This serves both to support the object and, under the monitoring of the pressure sensor 3, to continuously detect the piston rod's impact on the object. The pressure sensor 3 can transmit the monitoring data to the display component 6, allowing users to easily view the data at any time. This ensures the stability of the piston rod's force on the object. Since a double support component 5 is provided on the outside of the cylinder, the bottom end of the double support component 5 is connected to the top surface of the positioning component 2, and the top end of the double support component 5 is connected to the bottom surface of the lifting component 4. Therefore, the double support component 5 can be installed on the outside of the cylinder and can also extend and retract synchronously while the piston rod extends and retracts, thereby achieving the purpose of attachment support. This improves the stability of the piston rod support and enhances the safety of the hydraulic cylinder body 1.

[0032] See Figure 3 , Figure 4 The positioning component 2 includes a base 21 disposed on the bottom surface of the cylinder, and first slots 22 for inserting the double support component 5 on both sides of the top surface of the base 21; first stepped holes 23 are provided on both side walls of the base 21, and mounting holes 24 are provided at the four corners of the top surface of the base 21.

[0033] The base 21 in the positioning component 2 can provide a stable attachment base for the cylinder, thereby dispersing the downward pressure of the cylinder. It can also be installed in a designated position through four mounting holes 24. At the same time, it can be installed and fixed at the bottom of the double support component 5 through two first slots 22 and two first stepped holes 23, thereby improving the stability of the double support component 5 in use.

[0034] See Figures 3-5 The lifting assembly 4 includes a top plate 41. A retaining ring 42 for engaging the piston rod is fixedly installed at the middle position of the bottom surface of the top plate 41. The pressure sensor 3 is located in the inner cavity of the retaining ring 42. Sliding holes 43 are opened on both sides of the retaining ring 42. Limiting screws 44 are inserted into the inner cavities of the two sliding holes 43. One end of the limiting screw 44 is rotatably connected to the piston rod. A wire hole 45 is opened on the side wall of the retaining ring 42 above the sliding hole 43. Second slots 46 for inserting the top surfaces of the double support assembly 5 are opened on both sides of the bottom surface of the top plate 41. Second stepped holes 47 are opened on both sides of the top plate 41.

[0035] The top plate 41 in the lifting assembly 4 can be stably pressed against the bottom of the object, and the retaining ring 42 can be fitted onto the outer side of the top of the piston rod. The two second retaining grooves 46 and two second stepped holes 47 provide opening space. The retaining ring 42 can guide and limit the piston rod, so that the upward force of the piston rod can be smoothly transmitted upward through the pressure sensor 3. This allows the pressure sensor 3 to monitor the upward force of the piston rod at all times. At the same time, it can also provide opening space for the two sliding holes 43 and the wire hole 45. The corresponding limiting screws 44 can be installed through the two sliding holes 43 and rotated to be installed on the piston rod. This allows the retaining ring 42 to be installed on the piston rod. At this time, the retaining ring 42 can be prevented from falling off the piston rod and can move up and down slightly. The top of the double support assembly 5 can be installed and fixed through the two second retaining grooves 46 and two second stepped holes 47, thus achieving the purpose of attaching and supporting the top plate 41.

[0036] See Figure 3 , Figure 5 The inner diameter of the retaining ring 42 is the same as the outer diameter of the piston rod, and the two are connected by an insertion, which can improve the stability of the retaining ring 42 on the piston rod.

[0037] See Figures 3-6 The dual support assembly 5 includes a stabilizing frame 51 disposed on the outside of the cylinder. Multiple stabilizing frames 51 are provided. Each stabilizing frame 51 has guide holes 52 on both sides of its top surface. A guide tube 53 is inserted into the inner cavity of each guide hole 52. A guide post 54 is inserted into the inner cavity of each guide tube 53. A first screw hole 55 is opened on both side walls of each stabilizing frame 51. A first fixing screw 56 is rotatably connected to the inner cavity of each first screw hole 55. A limiting groove for engaging one end of the first fixing screw 56 is opened on the side wall of each guide tube 53. A second screw hole 57 is opened on the outer wall of each guide tube 53 near the bottom end. A second fixing screw 58 is rotatably connected to the inner cavity of the second screw hole 57. One end of the second fixing screw 58 passes through the first stepped hole 23. A third screw hole 59 is opened on the outer wall of each guide post 54 near the top end. A third fixing screw 510 is rotatably connected to the inner cavity of the third screw hole 59. One end of the third fixing screw 510 passes through the second stepped hole 47.

[0038] Multiple stabilizing brackets 51 in the dual-support assembly 5 can be sleeved on the outside of the cylinder and can also be installed with corresponding guide tubes 53 through guide holes 52. The guide tubes 53 can be inserted into the inner cavity of the first slot 22 and rotatably installed in the second screw hole 57 through the first stepped hole 23 by the second fixing screw 58, so that the guide tubes 53 can be stably fixed on the base 21. At the same time, it can also provide a telescopic base for the guide column 54. Through the first fixing screw 56, it can be rotatably installed in the inner cavity of the first screw hole 55 and one end can be engaged in the limiting groove on the side wall of the guide tube 53, so as to achieve the purpose of installing and positioning the stabilizing brackets 51. Through the third fixing screw 510, it can be rotatably installed in the third screw hole 59 through the second stepped hole 47, so that the guide column 54 can be stably fixed in the second slot 46 on the top plate 41, so that the guide column 54 can provide auxiliary support for the top plate 41.

[0039] See Figures 4-6 The outer diameter of the guide tube 53 is the same as the inner diameter of the first slot 22, which can improve the stability of the guide tube 53 installed in the first slot 22. The outer diameter of the guide post 54 is the same as the inner diameter of the second slot 46, which can improve the stability of the guide post 54 installed in the second slot 46.

[0040] See Figure 3 , Figure 7 The display component 6 includes a bracket 61 disposed on the outer wall of the cylinder, a storage box 62 disposed on the outer wall surface of the bracket 61, a box cover 63 disposed at the open end of the storage box 62, and a control board 64 disposed in the inner cavity of the storage box 62; a touch screen 65, an alarm 66 and a button switch 67 are disposed on the outer wall surface of the box cover 63, wherein the touch screen 65 is located above the alarm 66 and the button switch 67;

[0041] The storage box 62 in the display component 6 can be fixed to the outer wall of the cylinder via the bracket 61, and can also be used with the box cover 63 to install the control board 64, touch screen 65, alarm 66 and push button switch 67. The control board 64 can receive data sent from the pressure sensor 3, process the received data and send it to the touch screen 65 for display, so that users can easily view the data information. When the pressure sensor data received by the control board 64 is lower or higher than the preset value, the control board 64 will control the alarm 66 to run and send an alarm to remind the staff and improve the safety of equipment use. The push button switch 67 can be used to turn the equipment on or off.

[0042] During operation, the positioning component 2 not only fixes the cylinder in a designated position but also provides an attachment base for the cylinder barrel in the hydraulic cylinder body 1, thereby dispersing the downward pressure of the cylinder barrel during operation. The lifting component 4 not only rests against the object that the hydraulic cylinder body 1 needs to support but also mounts the pressure sensor 3. It can also be installed on the top of the piston rod of the hydraulic cylinder body 1. Then, through the operation of the hydraulic cylinder body 1, the piston rod is driven to extend, allowing the piston rod to rest against the object on the lifting component 4 via the pressure sensor 3. This serves both to support the object and, under the monitoring of the pressure sensor 3, to continuously detect the piston... The piston rod exerts a force on the object, and the pressure sensor 3 can send the monitoring data to the display component 6, so that the user can easily check it at any time, so as to ensure the stability of the piston rod's force on the object. Since the cylinder is provided with a double support component 5, the bottom end of the double support component 5 is connected to the top surface of the positioning component 2, and the top end of the double support component 5 is connected to the bottom surface of the lifting component 4. Therefore, the double support component 5 can be installed on the outside of the cylinder and can also extend and retract synchronously while the piston rod extends and retracts, so as to achieve the purpose of attachment support, thereby improving the stability of the piston rod support and improving the safety of the hydraulic cylinder body 1.

[0043] The base 21 in the positioning component 2 can provide a stable attachment base for the cylinder, thereby dispersing the downward pressure of the cylinder. It can also be installed in a designated position through four mounting holes 24. At the same time, it can be installed and fixed at the bottom of the double support component 5 through two first slots 22 and two first stepped holes 23, thereby improving the stability of the double support component 5 in use.

[0044] The top plate 41 in the lifting assembly 4 can be stably pressed against the bottom of the object, and the retaining ring 42 can be fitted onto the outer side of the top of the piston rod. The two second retaining grooves 46 and two second stepped holes 47 provide opening space. The retaining ring 42 can guide and limit the piston rod, so that the upward force of the piston rod can be smoothly transmitted upward through the pressure sensor 3. This allows the pressure sensor 3 to monitor the upward force of the piston rod at all times. At the same time, it can also provide opening space for the two sliding holes 43 and the wire hole 45. The corresponding limiting screws 44 can be installed through the two sliding holes 43 and rotated to be installed on the piston rod. This allows the retaining ring 42 to be installed on the piston rod. At this time, the retaining ring 42 can be prevented from falling off the piston rod and can move up and down slightly. The top of the double support assembly 5 can be installed and fixed through the two second retaining grooves 46 and two second stepped holes 47, thus achieving the purpose of attaching and supporting the top plate 41.

[0045] Multiple stabilizing brackets 51 in the dual-support assembly 5 can be sleeved on the outside of the cylinder and can also be installed with corresponding guide tubes 53 through guide holes 52. The guide tubes 53 can be inserted into the inner cavity of the first slot 22 and rotatably installed in the second screw hole 57 through the first stepped hole 23 by the second fixing screw 58, so that the guide tubes 53 can be stably fixed on the base 21. At the same time, it can also provide a telescopic base for the guide column 54. Through the first fixing screw 56, it can be rotatably installed in the inner cavity of the first screw hole 55 and one end can be engaged in the limiting groove on the side wall of the guide tube 53, so as to achieve the purpose of installing and positioning the stabilizing brackets 51. Through the third fixing screw 510, it can be rotatably installed in the third screw hole 59 through the second stepped hole 47, so that the guide column 54 can be stably fixed in the second slot 46 on the top plate 41, so that the guide column 54 can provide auxiliary support for the top plate 41.

[0046] The storage box 62 in the display component 6 can be fixed to the outer wall of the cylinder via the bracket 61, and can also be used with the box cover 63 to install the control board 64, touch screen 65, alarm 66 and push button switch 67. The control board 64 can receive data sent from the pressure sensor 3, process the received data and send it to the touch screen 65 for display, so that users can easily view the data information. When the pressure sensor data received by the control board 64 is lower or higher than the preset value, the control board 64 will control the alarm 66 to run and send an alarm to remind the staff and improve the safety of equipment use. The push button switch 67 can be used to turn the equipment on or off.

[0047] In summary, this device can monitor the load supported by the hydraulic cylinder body 1, improve the stability of its support, and issue an alarm when the support is abnormal, thereby improving the safety of the hydraulic cylinder body 1 support.

[0048] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A long-stroke double-support hydraulic cylinder capable of real-time monitoring of support load, comprising a hydraulic cylinder body (1), wherein the hydraulic cylinder body (1) includes a cylinder barrel, and a piston rod is provided in the inner cavity of the cylinder barrel, characterized in that: A positioning component (2) is fixedly installed at the bottom of the cylinder, a pressure sensor (3) is installed at the top of the piston rod, a lifting component (4) is installed at the top of the pressure sensor (3), and the lifting component (4) is connected to the piston rod. A double support component (5) is installed on the outside of the cylinder, and the bottom end of the double support component (5) is connected to the top surface of the positioning component (2). The top of the double support assembly (5) is connected to the bottom surface of the lifting assembly (4), and a display assembly (6) is provided on one side of the outer wall of the cylinder. The display assembly (6) is electrically connected to the pressure sensor (3).

2. The long stroke double support hydraulic cylinder capable of monitoring support load in real time according to claim 1, characterized in that: The positioning component (2) includes a base (21) disposed on the bottom surface of the cylinder, and the top surface of the base (21) is provided with first slots (22) on both sides for inserting into the bottom surface of the double support component (5). The base (21) has first stepped holes (23) on both sides of its side walls, and mounting holes (24) are provided at the four corners of the top surface of the base (21).

3. The long stroke double support hydraulic cylinder capable of monitoring support load in real time according to claim 2, characterized in that: The lifting assembly (4) includes a top plate (41). A retaining ring (42) for engaging the piston rod is fixedly provided at the middle position of the bottom surface of the top plate (41). The pressure sensor (3) is located in the inner cavity of the retaining ring (42). Sliding holes (43) are provided on both sides of the retaining ring (42). Limiting screws (44) are inserted into the inner cavities of the two sliding holes (43). One end of the limiting screw (44) is rotatably connected to the piston rod. The side wall of the retaining ring (42) and above the sliding hole (43) is provided with a wire hole (45). The bottom surface of the top plate (41) is provided with a second slot (46) for inserting into the top surface of the double support assembly (5). The two side walls of the top plate (41) are provided with a second stepped hole (47).

4. The long stroke double support hydraulic cylinder capable of monitoring support load in real time according to claim 3, characterized in that: The inner diameter of the retaining ring (42) is the same as the outer diameter of the piston rod, and the two are connected by insertion.

5. The long stroke double support hydraulic cylinder capable of monitoring support load in real time according to claim 3, characterized in that: The dual support assembly (5) includes a stabilizing frame (51) disposed on the outside of the cylinder. Multiple stabilizing frames (51) are provided. Each stabilizing frame (51) has guide holes (52) on both sides of its top surface. Each guide hole (52) has a guide tube (53) inserted into its inner cavity. Each guide tube (53) has a guide post (54) inserted into its inner cavity. Each stabilizing frame (51) has a first screw hole (55) on both side walls. Each first screw hole (55) has a first fixing screw (56) rotatably connected to its inner cavity. Each guide tube (53) has a limiting groove on its side wall for engaging one end of the first fixing screw (56). Each of the guide tubes (53) has a second screw hole (57) on its outer wall near the bottom. The inner cavity of the second screw hole (57) is rotatably connected to a second fixing screw (58). One end of the second fixing screw (58) passes through the first stepped hole (23). Each of the guide pins (54) has a third screw hole (59) on its outer wall near the top. The inner cavity of the third screw hole (59) is rotatably connected to a third fixing screw (510). One end of the third fixing screw (510) passes through the second stepped hole (47).

6. The long stroke double support hydraulic cylinder capable of monitoring support load in real time according to claim 5, characterized in that: The outer diameter of the guide tube (53) is the same as the inner diameter of the first slot (22), and the outer diameter of the guide post (54) is the same as the inner diameter of the second slot (46).

7. The long stroke double support hydraulic cylinder capable of monitoring support load in real time according to claim 1, characterized in that: The display component (6) includes a bracket (61) disposed on the outer wall of the cylinder, a storage box (62) disposed on the outer wall surface of the bracket (61), a box cover (63) disposed at the open end of the storage box (62), and a control board (64) disposed in the inner cavity of the storage box (62). The outer wall surface of the cover (63) is provided with a touch screen (65), an alarm (66) and a push button switch (67), wherein the touch screen (65) is located above the alarm (66) and the push button switch (67).

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