CN110067616B

CN110067616B - DPF cleaning machine

Info

Publication number: CN110067616B
Application number: CN201910442800.1A
Authority: CN
Inventors: 项昶斌; 黄菲; 洪鹏健; 刘鹏; 陈立峰; 刘伟军
Original assignee: Zhejiang Yinlun Intelligent Equipment Co ltd
Current assignee: Zhejiang Yinlun Intelligent Equipment Co ltd
Priority date: 2019-05-25
Filing date: 2019-05-25
Publication date: 2024-08-27
Anticipated expiration: 2039-05-25
Also published as: CN110067616A

Abstract

The invention discloses a DPF cleaning machine, which comprises a rack, a PLC control device arranged on one side of the rack and used for controlling the operation of a complete machine, a pneumatic cleaning device arranged in the rack and used for cleaning a DPF, a three-jaw chuck locking device used for locking the DPF, a collecting device arranged below the pneumatic cleaning device and used for collecting PM particles, and a secondary filtering device arranged behind the collecting device. The invention has the following beneficial effects: the DPF cleaner has the characteristics of higher cleaning efficiency, simple subsequent treatment and low use cost.

Description

DPF cleaning machine

Technical Field

The present invention relates to a DPF cleaning apparatus, and more particularly, to a DPF cleaning machine.

Background

The diesel particulate filter is a device for reducing Particulate Matters (PM) in exhaust gas by filtering, abbreviated as DPF, installed in an exhaust system of a diesel vehicle. The DPF can effectively purify 70% -90% of particles in exhaust gas, and is one of the most effective and direct methods for purifying diesel particulate matters. Generally, when a DPF is mounted on an exhaust pipe of a diesel engine and exhaust gas passes through, PM particles are adsorbed and filtered by a filter element, but as the operating time increases, PM in the filter element increases, so that the exhaust back pressure increases, and the dynamic performance of the diesel engine is affected. Therefore, the removal of PM on the filter cartridge is referred to as regeneration of the DPF.

Chinese patent publication No. CN107890710a discloses a DPF cleaning device based on ultrasonic cleaning, which comprises a container and a cover for sealing the container, when the container contains a DPF, the container is divided into a first chamber and a second chamber by the DPF, the container is connected with an ultrasonic generator, the first chamber is connected with a cleaning solution source through a liquid inlet valve FA1, a pump, the second chamber is connected with the cleaning solution source through a liquid outlet valve FB2, a filter, a liquid outlet of the pump is connected with a liquid outlet of the filter through a back flushing valve FC, and a liquid inlet of the filter is connected with a liquid waste discharge pipe with a liquid waste valve FD.

The DPF cleaning device is complex in structure, ultrasonic waves are needed to participate in cleaning, cleaning stock solution is needed, subsequent treatment of the cleaning stock solution is complex, the process flow is complex, and the efficiency is low.

Disclosure of Invention

The invention aims to provide a DPF cleaner. The DPF cleaner has higher efficiency and simple subsequent treatment.

The invention aims at realizing the following technical scheme:

The DPF cleaning machine comprises a rack, a PLC control device arranged on one side of the rack and used for controlling the whole machine to run, a pneumatic cleaning device arranged inside the rack and used for cleaning a DPF, a three-jaw chuck locking device used for locking the DPF, a collecting device arranged below the pneumatic cleaning device and used for collecting PM particles, and a secondary filtering device arranged behind the collecting device.

After the technical scheme is adopted, the DPF is fixed by being placed on the three-jaw chuck locking device, and then the pneumatic cleaning device is controlled to clean the DPF. The cleaned particulate matters are collected by the collecting device and pass through the secondary filtering device, so that the particulate matters are completely collected, and the aim of environmental protection is achieved. The whole process is controlled by a PLC control device with set parameters.

The invention is further provided with: the pneumatic cleaning device comprises sliding rails arranged on two sides in a rack, sliding blocks are matched with the sliding rails, a screw rod is arranged in the sliding rails, the sliding blocks are connected with the screw rod in a matched mode, two sliding blocks are connected with a fixed box jointly, a control shaft is sleeved in the middle of the fixed box in a sliding mode, the top of the control shaft is fixedly connected with a high-pressure air inlet pipe, the bottom of the control shaft is fixedly connected with a high-pressure air pipe, the high-pressure air pipe is connected with a gas storage box, the gas storage box is fixedly connected with a pneumatic valve, and the pneumatic valve is connected with an air injection pipe.

Through adopting above-mentioned technical scheme, through rotatory lead screw for the slider reciprocates under the drive of lead screw, thereby drives pneumatic belt cleaning device and reciprocates. Such an arrangement is intended to be oriented towards different specifications of DPFs, so that the DPF cleaner can be adapted to a variety of different operating environments. The gas enters the control shaft through the high-pressure gas inlet pipe, then enters the gas storage box through the high-pressure gas pipe, and the pneumatic valve fixedly connected with the gas storage box can control whether the gas can enter the gas spraying pipe or not. The gas storage box is arranged to ensure that the pressure stably enters the gas spraying pipe. If the gas storage box is not present, high-pressure gas can be led to directly enter the gas injection pipe. When high-pressure gas in the gas jet pipe blows out, a vacuum state exists between the high-pressure gas pipe and the interior of the gas jet pipe for a certain time, and a certain time is needed for subsequent high-pressure gas filling, so that the pressure of the gas blown out of the gas jet pipe is unstable, and the cleaning effect is affected.

The invention is further provided with: the gas injection pipe comprises a gas injection pipe body, and is characterized in that a fixing plate is fixedly connected to one side of the gas injection pipe, a guide rail is arranged on the other side of the fixing plate, a sliding block is connected to the guide rail in a matched mode, a pneumatic stepping motor is fixedly connected to the sliding block, a gear is fixedly connected to the bottom of one side of the pneumatic stepping motor, a gear rod is matched with the gear, and the gear rod is fixedly connected with the fixing plate.

Through adopting above-mentioned technical scheme, through the operation of pneumatic step motor for gear rotation, gear rotation drives the gear pole and removes, thereby drives the fixed plate and removes certain distance. The fixed plate moves to drive the air jet pipe to move, so that the displacement of the air jet pipe is realized, and the air jet pipe can clean the DPF omnidirectionally.

The invention is further provided with: the fixed box is provided with the cylinder in control shaft both sides, cylinder bottom and fixed box fixed connection, the cylinder top is provided with the piston, and the piston butt has the movable plate, the movable plate is connected with the control shaft bearing, fixed box is provided with pneumatic step motor in control shaft one side, just pneumatic step motor is connected with the belt pulley group, belt pulley group and control shaft fixed connection, control shaft and fixed plate fixed connection.

After the technical scheme is adopted, the air cylinder is arranged, so that the air cylinder can drive the piston to move when the air ejector tube moves. The piston moves to drive the moving plate which is abutted with the piston to move up and down, so that the control shaft is driven to move up and down. The control shaft moves up and down to drive the fixed plate to move, so as to drive the air ejector tube to move. The arrangement is to prevent abrasion caused by abutting with the DPF when the air jet pipe moves under the action of the pneumatic stepping motor, and prolong the service life of the air jet pipe.

The invention is further provided with: the collecting device comprises a cylindrical filter element, wherein a plurality of fine holes through which air can pass but particles can not pass are formed in the surface of the cylindrical filter element, an upper support is arranged at the top of the cylindrical filter element, a lower support is arranged at the bottom of the cylindrical filter element, a connecting rod is connected between the upper support and the lower support through bolts, a screw hole is formed in the upper support, a through hole for the cylindrical filter element to be fit and fixed is formed in the lower support, a collecting funnel is arranged at the position of the through hole of the lower support, and the bottom of the collecting funnel is used for being connected with a filter bag.

After the technical scheme is adopted, the upper support is used for fixedly connecting the cylindrical filter element with the frame, and the lower support and the connecting rod are used for supporting the position of the cylindrical filter element, so that the cylindrical filter element is fixed up and down, and the fixing effect of the cylindrical filter element is optimal. Through the setting of collecting funnel for the collecting funnel can collect the particulate matter that the drum filter core filtered down together in the filter bag, thereby accomplish the particulate matter and collect. Wherein, the surface of the filter bag related to the invention is provided with the same fine holes as the cylindrical filter element, so that air can pass through the filter bag and particulate matters cannot pass through the filter bag.

The invention is further provided with: the cylinder filter core is characterized in that a ring body encircling the cylinder filter core is arranged on the outer surface of the cylinder filter core, a plurality of air holes are formed in the surface of the ring body and correspond to the positions of the fine holes, an air vent is formed in one side of the ring body, the air vent is connected with a valve, and the valve is connected with a high-pressure air pipe.

By adopting the technical scheme, when the external PM particles enter the cylindrical filter element, part of the PM particles are not filtered by the cylindrical filter element, but are adsorbed on the inner surface of the cylindrical filter element. After long-time use, the inner surface of the cylindrical filter element is stained with particulate matters, so that the pores on the surface of the cylindrical filter element are blocked, and the filtering effect of the cylindrical filter element is affected. In order to solve the problems, the invention utilizes the pneumatic generating mechanism to ventilate the ring body and enable the gas to flow to the position of the air hole of the ring body along the ring body and then blow out. The air blown out of the air hole has certain kinetic energy, and can impact the air on the surface of the cylindrical filter element. The pore that the drum filter core surface set up is the pore that can supply the air to pass through but can not make particulate matter pass through for the gas that the air vent blows out carries out gaseous impact to drum filter core surface, under gaseous impact, drum filter core internal surface attached particulate matter is impacted by outside air and can not adsorb at drum filter core's internal surface, guarantees drum filter core internal surface's cleanness, thereby guarantees that drum filter core long-time work's filter effect can not weaken, has improved drum filter core's life and prevented secondary pollution. And moreover, the internal particles are easy to gather at the center of the cylindrical filter element under the impact of external air, so that the filtering efficiency is improved.

The invention is further provided with: the lifting device is characterized in that the ring body is sleeved with a lifting frame, the lifting frame is fixedly connected with a sliding block, the sliding block is connected with a sliding rod in a sliding mode, the sliding rod is fixedly connected with the frame, a driving motor is arranged on the sliding block, and the driving motor is controlled by a PLC control device.

After the technical scheme is adopted, the PLC control device controls the driving motor to drive the sliding block to reciprocate back and forth, so that the sliding block drives the lifting frame to reciprocate back and forth. The ring body moves up and down along with the dust removing device, thereby realizing the purpose of automatic dust removing.

The invention is further provided with: the lifting frame is characterized in that an installation groove is formed in the middle of the lifting frame, and screwing bolts are arranged on the upper side and the lower side of the lifting frame.

Through adopting above-mentioned technical scheme, through the setting of screwing the bolt for can stabilize the installation joint between ring body and the crane between the crane, prevent that the ring body from taking place the shake in the course of the work.

The invention is further provided with: the secondary filter device comprises a through groove arranged on one side of the collecting device, and a fan is arranged on one side of the through groove.

Through adopting above-mentioned technical scheme back, through the setting of fan for fan one side forms the vacuum, strengthens the air flow in the frame, thereby accelerates filtration efficiency, and can collect the particulate matter of leaving over in the frame, realizes secondary filtration, more environmental protection.

In summary, the present invention has the following advantageous objects: the DPF cleaner has the characteristics of higher cleaning efficiency, simple subsequent treatment and low use cost.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a schematic view of the structure of the frame door after opening in the embodiment;

FIG. 3 is a schematic view of the structure in another direction in FIG. 2;

FIG. 4 is a schematic structural view of a pneumatic cleaning device;

FIG. 5 is a schematic view of the structure of FIG. 4 with a portion of the retaining box removed;

FIG. 6 is a schematic view of the structure in the other direction of FIG. 5;

FIG. 7 is a schematic view of the structure of the collecting device;

FIG. 8 is an exploded view of FIG. 7;

FIG. 9 is a schematic structural view of the ring body;

fig. 10 is an enlarged view of region a in fig. 9.

Reference numerals: 1. a frame, 2, a PLC control device 3, a pneumatic cleaning device; 301. a slide rail; 302. a sliding block; 303. a fixed box; 304. a control shaft; 305. a high pressure air inlet pipe; 306. a high pressure gas pipe; 307. a gas storage box; 308. a pneumatic valve; 309. a gas lance; 310. a fixing plate; 311. a guide rail; 312. a slide block; 313. a pneumatic stepping motor; 315. a gear lever; 316. a cylinder; 317. a piston; 318. a moving plate; 319. a pneumatic stepper motor; 320. a first pulley; 321. a belt; 322. a second pulley; 4. a three-jaw chuck locking device; 5. a collecting device; 501. a cylindrical filter element; 502. an upper bracket; 503. a lower bracket; 504. a connecting rod; 505. a screw hole; 506. a through hole; 507. a collection funnel; 508. a ring body; 509. air holes; 510. a vent; 511. a valve; 512. a lifting frame; 513. a sliding block; 514. a slide bar; 515. a mounting groove; 516. screwing the bolt; 6. a generating device; 7. a secondary filtering device; 701. a blower; 8. DPF.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.

As shown in fig. 1 to 3, a DPF8 cleaning machine includes a frame 1, a PLC control device 2 provided at one side of the frame 1 for controlling the operation of the whole machine, a pneumatic cleaning device 3 provided inside the frame 1 for cleaning the DPF8, a three-jaw chuck locking device 4 for locking the DPF8, a collecting device 5 provided below the pneumatic cleaning device 3 for collecting PM particles, a secondary filtering device 7 provided behind the collecting device 5, and a generating device 6 for supplying high-pressure gas.

The pneumatic cleaning device 3 as shown in fig. 4-6 comprises sliding rails 301 arranged on two sides in the frame 1, wherein the sliding rails 301 are matched with sliding blocks 312. A screw rod (not shown) is arranged in the sliding rail 301, the sliding blocks 302 are connected with the screw rod in a matched mode, and the two sliding blocks 302 are connected with a fixed box 303. The middle part of the fixed box 303 is slidably sleeved with a control shaft 304, and the top of the control shaft 304 is fixedly connected with a high-pressure air inlet pipe 305. The bottom of the control shaft 304 is fixedly connected with a high-pressure air pipe 306. The high-pressure gas pipe 306 is connected to the high-pressure gas inlet pipe 305. The high-pressure gas pipe 306 is connected with a gas storage box 307. The air storage box 307 is fixedly connected with a pneumatic valve 308, and the pneumatic valve 308 is connected with an air injection pipe 309. A fixing plate 310 is fixedly connected to one side of the gas lance 309. Wherein, the control shaft 304 is fixedly connected with the fixing plate 310. The other side of the fixing plate 310 is provided with a guide rail 311. The guide rail 311 is connected with a slider 312 in a matching way, the slider 312 is fixedly connected with a pneumatic stepping motor 313, a gear is fixedly connected with the bottom of one side of the pneumatic stepping motor 313, a gear rod 315 is matched with the gear, and the gear rod 315 is fixedly connected with the fixed plate 310. The fixed box 303 is provided with air cylinders 316 at two sides of the control shaft 304, and the bottom of the air cylinders 316 is fixedly connected with the fixed box 303. A piston 317 is provided on top of the cylinder 316, and the piston 317 abuts against a moving plate 318. The moving plate 318 is bearing-connected to the control shaft 304, wherein the fixed box 303 is provided with a pneumatic stepping motor 319 on one side of the control shaft 304. The pneumatic stepping motor 319 is connected with a first belt pulley 320, the first belt pulley 320 is matched with a belt 321, the other side of the belt 321 is matched with a second belt pulley 322, and the second belt pulley 322 is fixedly connected with the control shaft 304.

When the pneumatic cleaning device starts to operate, the position of the air jet pipe 309 is adjusted to the position of the outer edge of the DPF8 by a high-pressure stepping motor, and then the gas is introduced. Gas enters the control shaft 304 through a high pressure inlet pipe 305. The gas in the control shaft 304 enters the gas storage box 307 along the high-pressure gas pipe 306. The pressure is kept stable by the gas storage box 307, and the high-pressure gas in the gas storage box 307 enters the gas spraying pipe 309 through the pneumatic valve 308, so that the gas is sprayed out to impact the upper surface of the DPF8, and the particulate matters on the inner surface of the DPF8 are separated from the DPF 8. At the same time, the pneumatic stepper motor 319 rotates the first pulley 320. The first pulley 320 moves the belt 321, which in turn rotates the second pulley 322. Rotation of the second pulley 322 rotates the control shaft 304. When the control shaft 304 rotates, the air injection pipe 309 is located at the outer edge of the DPF8 and is not located at the center, so that the air injection pipe 309 rotates around the center for one circle around the outer edge of the DPF8, and the outer edge of the DPF8 is cleaned. After one rotation, the pneumatic stepping motor 319 is reversed to prevent the high pressure air tube 306 from knotting.

Next, the pneumatic stepping motor 313 operates to drive the gear to rotate. The gear rotation moves the gear lever 315 and thus the fixed plate 310 a distance less than the diameter of the gas lance 309. The fixed plate 310 moves to move the gas nozzles 309 the same distance toward the center of the DPF 8. The above steps are repeated, and the pneumatic stepping motor 319 drives the air injection pipe 309 to rotate around the center of the DPF8, so as to clean the inside of the outer edge of the DPF8 by a certain distance. After repeating the above steps a number of times, the surface of the DPF8 is completely cleaned, and the air lance 309 is located at the center of the DPF 8. The whole process is under the control of the PLC control device 2.

When the air injection of the air injection pipe 309 is completed each time, the air cylinder 316 drives the moving plate 318 to move upwards for one displacement, so that the air injection pipe 309 is no longer in contact with the surface of the DPF8, and when the air injection pipe 309 rotates for one small angle to clean another position, the air cylinder 316 moves downwards for one displacement, so that the air injection pipe 309 is abutted with the DPF8 for cleaning. By this arrangement, the air lance 309 is prevented from moving when it is in direct contact with the surface of the DPF8, wear of the air lance 309 is prevented, and the service life of the air lance 309 is prolonged.

As shown in fig. 7 to 10, the collecting device 5 includes a cylindrical filter element 501 provided with a plurality of fine holes (not shown) through which air can pass but PM particles cannot pass. The cylindrical filter element 501 is provided with an upper bracket 502 at the top and a lower bracket 503 at the bottom. A connecting rod 504 is connected between the upper bracket 502 and the lower bracket 503 through bolts. The upper bracket 502 is provided with screw holes 505, and the lower bracket 503 is provided with through holes 506 for the cylindrical filter element 501 to be engaged and fixed. The lower bracket 503 is provided with a collection funnel 507 at the position of the through hole 506. The bottom of the collection funnel 507 is adapted to connect with a filter bag. The outer surface of the cylindrical filter element 501 is provided with a ring body 508 surrounding the cylindrical filter element 501. A plurality of air holes 509 are formed in the surface of the ring body 508 at positions corresponding to the fine holes, an air vent 510 is formed in one side of the ring body 508, a valve 511 is connected to the air vent 510, and the valve 511 is connected to the high-pressure air pipe 306.

Preferably, the lifting frame 512 is sleeved on the ring body 508, the lifting frame 512 is fixedly connected with a sliding block 513, the sliding block 513 is connected with a sliding rod 514 in a sliding manner, the sliding rod 514 is fixedly connected with the frame 1, and a driving motor (not shown) is arranged on the sliding block 312 and controlled by the PLC control device 2. Wherein, the middle part of the lifting frame 512 is provided with a mounting groove 515, and the upper side and the lower side of the lifting frame 512 are provided with tightening bolts 516.

The secondary filtering device 7 comprises a through groove (not shown) arranged on one side of the cylindrical filter element 501, and the through groove is communicated with the position where the cylindrical filter element 501 is positioned. A fan 701 is arranged on one side of the through groove.

All the high-pressure air pipes 306 and the high-pressure air inlet pipes 305 are connected with the generating device 6.

When the particles are cleaned by the pneumatic cleaning device 3 and enter the cylindrical filter element 501, the air holes 509 on the surface of the ring body 508 blow out air, and the air impact is carried out on the outer surface of the cylindrical filter element 501. The fine holes provided on the surface of the cylindrical filter 501 allow the gas to pass therethrough so that the gas impinges on the particulate matter on the inner wall of the cylindrical filter 501, so that the particulate matter does not adhere to the inner wall of the cylindrical filter 501, and so that the particulate matter moves toward the middle of the cylindrical filter 501, thereby improving the collection efficiency. The cylindrical filter cartridge 501 collects the particulate matter and collects the particulate matter into the filter bag through a collection funnel 507. The fan 701 keeps working, and the fan 701 drives the air around the filter bag to flow towards the position of the fan 701, so that the particles can completely enter the filter bag, and a better cleaning effect is ensured. Meanwhile, the missing particulate matters in the DPF8 cleaning machine can be sucked out and collected through the fan 701. Through the secondary filtering effect, the optimal particle treatment effect is achieved.

Claims

DPF cleaning machine, characterized by: the device comprises a frame (1), a PLC control device (2) arranged at one side of the frame (1) and used for controlling the operation of the whole machine, a pneumatic cleaning device (3) arranged inside the frame (1) and used for cleaning a DPF (8), a three-jaw chuck locking device (4) used for locking the DPF (8), a collecting device (5) arranged below the pneumatic cleaning device (3) and used for collecting PM particles, and a secondary filtering device (7) arranged behind the collecting device (5);

The pneumatic cleaning device (3) comprises sliding rails (301) arranged on two sides in a rack (1), sliding blocks (302) are matched with the sliding rails (301), screw rods are arranged in the sliding rails (301), the sliding blocks (302) are matched with the screw rods to be connected, two sliding blocks (302) are connected with a fixed box (303) together, a control shaft (304) is sleeved in the middle of the fixed box (303) in a sliding mode, a high-pressure air inlet pipe (305) is arranged above the control shaft (304), a high-pressure air pipe (306) is fixedly connected to the bottom of the control shaft (304), the high-pressure air inlet pipe (305) is communicated with the high-pressure air pipe (306), a gas storage box (307) is connected to the high-pressure air pipe (306), a pneumatic valve (308) is fixedly connected to the gas storage box (307), and the pneumatic valve (308) is connected with a gas spraying pipe (309);

A fixed plate (310) is fixedly connected to one side of the air ejector tube (309), a guide rail (311) is arranged on the other side of the fixed plate (310), a sliding block (312) is connected to the guide rail (311) in a matched mode, a pneumatic stepping motor (313) is fixedly connected to the sliding block (312), a gear is fixedly connected to the bottom of one side of the pneumatic stepping motor (313), a gear rod (315) is matched with the gear, and the gear rod (315) is fixedly connected with the fixed plate (310);

The fixed box (303) is provided with air cylinders (316) at two sides of the control shaft (304), the bottoms of the air cylinders (316) are fixedly connected with the fixed box (303), pistons (317) are arranged at the tops of the air cylinders (316), the pistons (317) are abutted to moving plates (318), the moving plates (318) are connected with the control shaft (304) through bearings, the fixed box (303) is provided with a pneumatic stepping motor (319) at one side of the control shaft (304), the pneumatic stepping motor (319) is connected with a belt (321) wheel set, the belt (321) wheel set is fixedly connected with the control shaft (304), and the control shaft (304) is fixedly connected with the fixed plate (310);

the secondary filtering device (7) comprises a through groove arranged at one side of the collecting device (5), and a fan (701) is arranged at one side of the through groove;

The collecting device (5) comprises a cylindrical filter element (501) with a plurality of fine holes for air to pass through but not particles to pass through, an upper bracket (502) is arranged at the top of the cylindrical filter element (501), a lower bracket (503) is arranged at the bottom of the cylindrical filter element, a connecting rod (504) is connected between the upper bracket (502) and the lower bracket (503) through bolts, a screw hole (505) is formed in the upper bracket (502), a through hole (506) for the cylindrical filter element (501) to be fit and fixed is formed in the lower bracket (503), a collecting funnel (507) is arranged at the position of the through hole (506) of the lower bracket (503), and the bottom of the collecting funnel (507) is used for being connected with a filter bag;

the cylindrical filter element is characterized in that a ring body (508) surrounding the cylindrical filter element (501) is arranged on the outer surface of the cylindrical filter element (501), a plurality of air holes (509) are formed in the surface of the ring body (508) and correspond to the fine holes, an air vent (510) is formed in one side of the ring body (508), the air vent (510) is connected with a valve (511), and the valve (511) is connected with a high-pressure air pipe (306);

The lifting device is characterized in that the ring body (508) is sleeved with a lifting frame (512), the lifting frame (512) is fixedly connected with a sliding block (513), the sliding block (513) is connected with a sliding rod (514) in a sliding mode, the sliding rod (514) is fixedly connected with the frame (1), a driving motor is arranged on the sliding block (513), and the driving motor is controlled by the PLC control device (2);

the middle part of the lifting frame (512) is provided with a mounting groove (515), and the upper side and the lower side of the lifting frame (512) are provided with screwing bolts (516).