Turntable type double-station mobile trolley dishwasher liner biting machine

Abstract

The present invention relates to a turntable type double-station mobile trolley biting machine, wherein both sides of a large base are connected to sliding supports through linear guide rails respectively, a main support and a sub-support are installed on each sliding support, a propulsion mechanism is arranged at two ends of the large base, a hydraulic cylinder body of the propulsion mechanism is fixedly connected to the large base, and a hydraulic piston rod is connected to the sliding support; a turntable rotating assembly is installed in the cavity of the main support and the sub-support, the turntable rotating assembly is connected to the turntable through a rotating shaft, a hob assembly is installed on the turntable, and six hob assemblies are evenly installed on the turntable, and the order of the hobs formed is 1# hob, 2# hob, 2# hob, 3# hob, 4# hob, 4# hob; a track mold and an outer backing mold are installed at the end of the fixed shaft in the turntable rotating assembly; a double-station mobile trolley is installed on the large base located between the two turntables through a linear guide rail, two tire frames are symmetrically installed on the double-station frame of the double-station mobile trolley, an inner lining film is installed on the tire frame, and the inner lining film is used in conjunction with an outer lining mold and a combined mold frame.

Description

Technical Field

[0001] The invention relates to a dishwasher inner liner forming machine, in particular to a dishwasher inner liner biting machine. Background Art

[0002] The traditional turntable dishwasher liner biting machine has four knives, namely 1#, 2#, 3# and 4#, which are evenly distributed on a large circular turntable. The first knife moves in when biting, and the fourth knife moves in after rotating 270°. Due to the needs of the biting process, the second and fourth knives need to bite twice to bite the liner tightly to prevent water leakage. Due to the limitation of this bottleneck, it takes 6 rotations to bite an liner turntable.

[0003] The original double-station trolley movement uses a hydraulic cylinder to push the trolley to move between the two stations. Due to the slow reciprocating speed of the hydraulic cylinder and the long non-engaging time of the biting machine, the overall rhythm of the biting machine liner production is slow. By speeding up the trolley running speed, the biting time can be reduced and work efficiency can be improved.

[0004] The four-knife turntable dishwasher liner biting machine has a large number of rotations and low working efficiency. It takes about 35 seconds to bite a liner. By reducing the number of rotations of the large plate, the biting time can be reduced without affecting product quality. The hydraulic cylinder drives the double-station trolley to move, and it takes 8 seconds for each time. Improving the hydraulic cylinder drive to a synchronous belt drive can save 4 seconds. Through the improvement, the 6-knife biting machine only takes 23 seconds to bite a liner, which can greatly improve work efficiency. Summary of the invention

[0005] In response to new demands on manufacturing technology, the present invention provides a turntable-type double-station mobile trolley dishwasher liner biting machine.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a turntable type double-station mobile trolley biting machine, including a large base, a main bracket, a sub-bracket, a turntable, a sliding support, a turntable rotating assembly, a propulsion mechanism, and a hob assembly. The two sides of the large base are respectively connected to the sliding support through linear guide rails, and the main bracket and the sub-bracket are installed on each of the sliding supports. The propulsion mechanism is arranged at both ends of the large base, and the hydraulic cylinder body of the propulsion mechanism is fixedly connected to the large base, and the hydraulic piston rod is connected to the sliding support; the turntable rotating assembly is installed in the cavity of the main bracket and the sub-bracket, and the turntable rotating assembly is connected to the turntable through a rotating shaft. Six hob assemblies are evenly installed on the turntable, and the order of the hobs is 1# hob, 2# hob, 2# hob, 3# hob, 4# hob, 4# hob, among which the double 2# hobs can ensure the first bite of the top plate and the middle plate of the biting machine, and the double 4# hobs can ensure the second bite without water leakage; the track mold and the outer support mold are installed on the end of the fixed shaft in the turntable rotating assembly; the double-station moving trolley is installed on the large base located between the two turntables through a linear guide rail, and two tire frames are symmetrically installed on the double-station frame of the double-station moving trolley, and the inner lining film is installed on the tire frame, and the inner lining film is used in conjunction with the outer lining mold and the combined mold frame.

[0007] Furthermore, the turntable rotating assembly includes a tension sleeve, a fixed shaft, an oil joint outer ring, an oil joint inner ring, a rotating shaft, a large sprocket, a chain, a small sprocket, and a reduction motor. The fixed shaft and the auxiliary bracket are fixedly connected by a tension sleeve, the oil joint inner ring is installed on the rotating shaft outer ring, the oil joint outer ring is installed on the oil joint inner ring, the rotating shaft inner ring is installed on the fixed shaft, the outer ring is installed in the main bracket, the reduction motor is installed in the cavity of the main bracket, and the reduction motor is connected to the large sprocket on the rotating shaft through a small sprocket and a chain; the end of the rotating shaft is connected to the turntable through a large turntable seat.

[0008] Furthermore, the hob assembly includes a linear slide rail, a support, a hydraulic cylinder, a connecting shaft, a skateboard, a hob, a hob shaft, and a track wheel. The support and the turntable are connected by a linear slide rail, the support and the skateboard are connected by a hydraulic cylinder, the skateboard is connected to the hob shaft, and the track wheel is installed on the back of the skateboard.

[0009] Furthermore, the cylinder body of the hydraulic cylinder is fixed on the support, the piston rod is connected to the connecting shaft, and the piston rod is locked with a round nut. The connecting shaft is connected to the slide plate, and the slide plate can move in the slideway of the support, and the slide plate is pressed by the side plate.

[0010] Furthermore, the double-station mobile trolley is composed of a tire frame, guide columns, an inner lining mold, a suction cup bracket, a suction cup, a mobile trolley, a trolley moving linear guide rail, a synchronous belt bracket, a trolley bracket, a synchronous belt, a synchronous pulley, and a three-in-one reduction motor. The trolley bracket is installed on the large base, and the trolley bracket is connected to the mobile trolley through the trolley moving linear guide rail. The three-in-one reduction motor and the synchronous belt support are installed on the trolley bracket, the synchronous pulley is installed on the three-in-one reduction motor, and both ends of the synchronous belt are installed on the synchronous pulley. The middle of the synchronous belt is fixed to the middle of the mobile trolley with a pressure plate, and the tire frame is fixed on both sides of the mobile trolley. The tire frame is connected to the telescopic frame through four guide columns, and the telescopic frame is fixedly connected to the inner lining membrane. The lower part of the tire frame is equipped with a middle plate tensioning mechanism.

[0011] Furthermore, the middle plate tensioning mechanism is composed of a pull plate, a hinge shaft, a pull plate bracket, a guide column, a linear bearing, a cylinder, a cylinder connecting shaft, a cylinder fixing plate, a lifting cylinder, and a spherical bearing. The lifting cylinder is installed on a mobile trolley, and the mobile trolley is connected to the pull plate bracket through a linear bearing. The piston rod of the lifting cylinder is installed on the pull plate bracket, and the pull plate is fixed to the pull plate bracket with a hinge shaft. The pull plate rotates under the action of the cylinder; the piston rod of the cylinder is connected to the pull plate with a spherical bearing, and the cylinder body of the cylinder and the pull plate bracket are connected with a cylinder fixing plate and a cylinder connecting shaft.

[0012] Furthermore, the outer backing mold and the track mold are fixed on the fixed axis of the biting machine, and the inner lining mold is fixed on the tire frame. The track mold, the outer backing mold and the inner lining mold are used in a matched manner.

[0013] The beneficial effects of the present invention are:

[0014] The present invention adopts a new type of six-knife turntable biting machine. Through the reasonable arrangement of the rolling cutters, the double 2# can ensure the primary biting of the top plate and the middle plate, and the double 4# can ensure the secondary biting without water leakage. After the improvement, the inner liner biting efficiency is improved and the scrap rate is reduced.

[0015] The three-in-one reduction motor drives the synchronous belt to pull the double moving trolley to move left and right. The reduction motor rotates at different speeds to drive the trolley to move at different speeds, reducing the non-engagement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the schematic diagram of the new process for the bite of the dishwasher liner;

[0017] Among them: (a) the hob bite process, (b) the bite principle;

[0018] Figure 2 It is a general diagram of the turntable type double-station mobile trolley dishwasher liner biting machine of the present invention;

[0019] Figure 3 is a schematic diagram of the turntable rotation assembly;

[0020] Figure 4 is a three-dimensional schematic diagram of a hob assembly;

[0021] Figure 5 is a side view of the hob assembly;

[0022] Figure 6 This is a schematic diagram of a double-station mobile trolley;

[0023] Figure 7 It is a schematic diagram of the middle plate tensioning mechanism;

[0024] Figure 8 It is a schematic diagram of the trajectory model;

[0025] Fig. 9 It is a schematic diagram of the external model;

[0026] Fig.10 is a schematic diagram of the lining mold;

[0027] In the figure: 101. auxiliary support, 102. turntable rotating assembly, 103. propulsion mechanism, 104. sliding base, 105. main support, 106. large base, 107. turntable, 108. hob assembly, 109. track mold, 110. external mold, 111. double-station mobile trolley, 201. tension sleeve, 202. fixed shaft, 203. oil joint outer ring, 204. oil joint inner ring, 205. rear bearing, 206. end cover, 207. rotating shaft, 208. large sprocket, 209. chain, 210. front bearing, 211. small sprocket, 212. reduction motor, 213. large turntable seat, 301. linear slide rail, 302. support, 303. hydraulic cylinder, 304. sliding shoe, 305. round nut, 306. .Connecting shaft, 307. Slide plate, 308. Side plate, 309. Hob, 310. Hob shaft, 311. Oil nozzle, 312. Locking screw, 313. Track wheel, 401. Tire frame, 402. Guide column, 403. Liner mold, 404. Suction cup bracket, 405. Suction cup, 406. Mobile trolley, 407. Trolley moving linear guide, 408. Synchronous belt bracket, 409. Trolley bracket, 410. Synchronous belt, 411. Synchronous belt pulley, 412. Three-in-one reduction motor, 501. Pull plate, 502. Hinge shaft, 503. Pull plate bracket, 504. Guide column, 505. Linear bearing, 506. Cylinder, 507. Cylinder connecting shaft, 508. Cylinder fixing plate, 509. Lifting cylinder, 510. Spherical bearing. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] In response to the new requirements for the manufacturing process of undercutting the inner tank of the dishwasher, the improved new process is detailed in Figure 1 (a) and (b) of .

[0030] The new process changes four knives into six knives on the original basis, adding a 2# knife behind the original 2# knife, and a 4# knife behind the original 4# knife. By evenly distributing 6 knives on the large turntable, the order of the knives is 1#, 2#, 2#, 3#, 4#, 4#, and the turntable rotates 2 circles to engage a dishwasher liner, which greatly improves work efficiency and greatly reduces the engagement scrap rate.

[0031] The traditional double-station trolley movement uses a hydraulic cylinder to push the trolley between the two stations. The improved and upgraded movement uses a three-in-one reducer to drive the synchronous belt to move the trolley. This form is fast and efficient.

[0032] like Figures 2 to 10 As shown, the turntable type double-station moving trolley biting machine is mainly composed of a large base 106, a main bracket 105, an auxiliary bracket 101, a turntable 107, a sliding support 104, a turntable rotating assembly 102, a propulsion mechanism 103, a hob assembly 108, a double-station moving trolley 111, a track mold 109, an outer mold 110, an inner lining mold, etc.

[0033] The large base 106 mainly provides support and installation position for the biting machine. The linear guide is installed on the large base 106. The sliding shoe of the linear guide is installed on the sliding support 104. The sliding support 104 can move along the linear guide on the large base 106. The main bracket 105 provides front support for the turntable assembly, and the auxiliary bracket 101 provides rear support for the turntable assembly. The main bracket 105 and the auxiliary bracket 101 are installed on the sliding support 104 at the same time. The hydraulic cylinder on the propulsion mechanism 103 provides thrust for the movement of the sliding support 104. The part installed on the sliding support 104 can move forward and backward along the linear guide.

[0034] The turntable 107 is installed on the rotating shaft, the outer ring of the rotating shaft is installed on the inner ring of the main bracket 105, the inner ring of the rotating shaft is installed on the outer ring of the fixed shaft, the turntable 107 provides rotational motion for the biting tool, the fixed shaft is installed inside the rotating shaft, the fixed shaft does not rotate, the track mold 109 and the external mold 110 are installed at the end of the fixed shaft, the track mold 109 provides a track for the tool rotational motion, the external mold 110 installed on the fixed shaft matches the inner lining mold installed on the tire frame to accurately position the top plate and the bottom plate of the inner liner.

[0035] The hob assembly 108 is installed on the turntable 107. A circular hob wheel is installed on the front of the hob assembly 108. The cutter can bite the inner liner. A track wheel is installed on the back of the hob assembly 108. The track wheel moves in the track mold 109 to ensure that the hob is always close to the inner liner. The hydraulic cylinder pushes the hob to ensure that the hob is always under constant pressure during the movement. The six hob assemblies 108 are evenly distributed along the turntable 107, forming a hob sequence of 1#, 2#, 2#, 3#, 4#, 4#. The double 2# can ensure that the top plate and the middle plate bite tightly once, and the double 4# can ensure that the secondary bite is leak-proof.

[0036] The double-station mobile trolley 111 provides loading and unloading for the liner. The lining mold is installed on the double-station tire frame. The lining mold and the outer mold provide positioning support and positioning for the liner. The middle plate tensioning mechanism is installed inside the tire frame. Through the tension of the pull plate installed in the middle frame tensioning device, the middle plate can be positioned, making it easier for the top plate and the bottom plate to buckle. Accurate buckling can greatly reduce the scrap rate. The synchronous belt drive device drives the double-station trolley to move back and forth according to the beat, and the bite efficiency is improved through the double station.

[0037] Example:

[0038] like Figure 2 As shown, a turntable type double-station mobile trolley biting machine is mainly composed of a large base 106, a main bracket 105, a sub-bracket 101, a turntable 107, a sliding support 104, a turntable rotating assembly 102, a propulsion mechanism 103, a hob assembly 108, a double-station mobile trolley 111, a track mold 109, an outer backing mold 110, an inner lining mold, etc.

[0039] The large base 106 is placed on the civil engineering foundation by bolts, the linear guide rail is symmetrically installed on the large base 106, the sliding shoe of the linear guide rail is connected to the sliding base 104, the propulsion mechanism 103 is arranged at both ends of the large base 106, the hydraulic cylinder body of the propulsion mechanism 103 is bolted to the large base 106, the hydraulic piston rod is connected to the sliding support 104, and the hydraulic piston rod is telescopic to push the sliding base 104 to move forward and backward. The main bracket 105 and the auxiliary bracket 101 are installed on the sliding base 104, the turntable rotating assembly 102 is installed in the cavity of the main bracket 105 and the auxiliary bracket 101, the turntable 107 is located on one side of the turntable rotating assembly 102 and is a part of the turntable rotating assembly 102, the hob assembly 108 is installed on the turntable 107, the fixed shaft is installed in the turntable rotating assembly 102, and the track mold 109 and the outer mold 110 are installed at the end of the fixed shaft. The double-station moving trolley 111 is installed in the middle of the large base 106 using a linear guide rail, two tire frames are symmetrically installed on the double-station frame of the double-station moving trolley 111, and the inner lining film is symmetrically installed on the tire frame of the double-station moving trolley 111. The inner lining film, outer lining mold and combined mold frame are used in conjunction with each other.

[0040] like Figure 3As shown, the turntable rotating assembly 102 is mainly composed of a tension sleeve 201, a fixed shaft 202, an oil joint outer ring 203, an oil joint inner ring 204, a rear bearing 205, an end cover 206, a rotating shaft 207, a large sprocket 208, a chain 209, a front bearing 210, a small sprocket 211, a reduction motor 212, a large turntable seat 213, etc.

[0041] The fixed shaft 202 and the auxiliary bracket 101 are connected by a tension sleeve 201, the inner ring 204 of the oil joint is installed on the outer ring of the rotating shaft 207, the outer ring 203 of the oil joint is installed on the inner ring 204 of the oil joint, the inner and outer rings 204 and 207 of the oil joint are used in combination, the inner ring of the rotating shaft 207 is installed on the fixed shaft, the outer ring is installed in the main bracket 105, the reduction motor 212 is installed in the cavity of the main bracket 105, the chain 209 is used to connect the large sprocket 208 on the rotating shaft 207 and the small sprocket 211 on the driving shaft of the reduction motor 212, and the reduction motor 212 drives the large turntable 213 to rotate. The large turntable seat 213 is installed at the end of the rotating shaft 207, the turntable 107 is fixedly connected to the large turntable seat 213, and the hob is installed on the turntable 107.

[0042] like Figure 4 As shown in Figure 5, the hob assembly 108 is mainly composed of a linear guide rail 301, a support 302, a hydraulic cylinder 303, a sliding shoe 304, a round nut 305, a connecting shaft 306, a slide plate 307, a side plate 308, a hob 309, a hob shaft 310, an oil nozzle 311, a locking screw 312, a track wheel 313, etc.

[0043] Use bolts to fix the linear slide 301 on the turntable 107, the slide shoe 304 of the linear slide 301 is connected to the support 302, the cylinder body of the hydraulic cylinder 303 is fixed on the support 302, the piston rod is connected to the connecting shaft 306, and the round nut 305 is used to lock the piston rod. The connecting shaft 306 is connected to the slide plate 307. The slide plate 307 can move in the slideway of the support 302. The side plate 308 is used to press the slide plate 307, and the hob shaft 310 is used to connect the hob 309 and the slide plate 307 together on the front. After installation, the locking screw 312 is used to fix the hob 309 firmly, and the track wheel 313 is installed on the back of the slide plate 307.

[0044] like Figure 6 As shown, the double-station mobile trolley 111 is mainly composed of a tire frame 401, a guide column 402, an inner lining mold 403, a suction cup bracket 404, a suction cup 405, a mobile trolley 406, a trolley moving linear guide 407, a synchronous belt bracket 408, a trolley bracket 409, a synchronous belt 410, a synchronous belt pulley 411, a three-in-one reduction motor 412, etc.

[0045] The trolley bracket 409 is mounted on the large base 106, the trolley moving linear guide 407 is mounted on the trolley bracket 409, the sliding shoe of the trolley moving linear guide 407 is mounted on the moving trolley 406, the three-in-one reduction motor 412 and the synchronous belt support 408 are mounted on the trolley bracket 409, the synchronous belt pulley 411 is mounted on the three-in-one reduction motor 412, the two ends of the synchronous belt 410 are mounted on the synchronous belt pulley 411, the middle of the synchronous belt 410 is fixed to the middle of the moving trolley 406 by a pressing plate, the tire frame 401 is fixed to both sides of the moving trolley 406, there are four cylindrical guide holes on the tire frame 401, guide pillars are installed in the guide holes, the four guide pillars are installed on the telescopic frame, the guide pillars and the telescopic frame are fixed by a pressing plate, and the lining film 403 is fixed to the telescopic frame. The lower part of the tire frame 401 is equipped with a middle plate tensioning mechanism.

[0046] like Figure 7 As shown, the middle plate tensioning mechanism is mainly composed of a pull plate 501, a hinge shaft 502, a pull plate bracket 503, a guide column 504, a linear bearing 505, a cylinder 506, a cylinder connecting shaft 507, a cylinder fixing plate 508, a lifting cylinder 509, a spherical bearing 510, etc.

[0047] The lifting cylinder 509 is installed on the moving trolley, the linear bearing 505 is installed on the moving trolley, the pull plate bracket 503 can slide in the linear bearing 505, the piston rod of the lifting cylinder 509 is installed on the pull plate bracket 503, the pull plate 501 is fixed to the pull plate bracket 503 by a hinge shaft, the pull plate 501 rotates under the action of the cylinder 506, the joint bearing 510 is used to connect the piston rod of the cylinder 506 to the pull plate 501, and the cylinder body of the cylinder 506 and the pull plate bracket 503 are connected by a cylinder fixing plate 508 and a cylinder connecting shaft 507.

[0048] Figure 8 Track mode, Fig. 9 External model and Fig.10 The inner lining mold is a mold of the biting machine, the track mold and the outer backing mold are fixed on the fixed axis of the biting machine, the inner lining mold is fixed on the tire frame, and the track mold, the outer backing mold and the inner lining mold are used in matching.

Claims

1. A turntable type double-station mobile trolley dishwasher liner biting machine, comprising a large base, a main bracket, a secondary bracket, a turntable, a sliding support, a turntable rotating assembly, a propulsion mechanism, and a hob assembly, characterized in that: The two sides of the large base are respectively connected to the sliding support through linear guide rails, and a main support and a sub-support are installed on each of the sliding supports. The propulsion mechanism is arranged at both ends of the large base, and the hydraulic cylinder body of the propulsion mechanism is fixedly connected to the large base, and the hydraulic piston rod is connected to the sliding support; the turntable rotation assembly is installed in the cavity of the main support and the sub-support, and the turntable rotation assembly is connected to the turntable through a rotating shaft, and six hob assemblies are evenly installed on the turntable, and the order of the hobs formed is 1# hob, 2# hob, 2# hob, 3# hob, 4# hob, 4# hob, among which the double 2# hobs can ensure that the top plate and the middle plate of the biting machine are bitten tightly at one time, and the double 4# hobs can ensure that the secondary biting is watertight; the fixed shaft end of the turntable rotation assembly is installed Track mold and outer backing mold; a double-station moving trolley is installed on the large base between the two turntables through a linear guide rail, two tire frames are symmetrically installed on the double-station frame of the double-station moving trolley, and an inner lining mold is installed on the tire frame. The inner lining mold is used in conjunction with the outer lining mold and the combined mold frame; the hob assembly includes a linear slide rail, a support, a hydraulic cylinder, a connecting shaft, a skateboard, a hob, a hob shaft, and a track wheel. The support is connected to the turntable through a linear slide rail, the support is connected to the skateboard through a hydraulic cylinder, the skateboard is connected to the hob shaft, and the back of the skateboard is installed with a track wheel; the outer backing mold and the track mold are fixed on the fixed shaft of the biting machine, and the inner lining mold is fixed on the tire frame. The track mold, the outer backing mold and the inner lining mold are used in matching manner.

2. The turntable type double-station mobile trolley dishwasher liner biting machine according to claim 1 is characterized by: The turntable rotating assembly includes a tension sleeve, a fixed shaft, an oil joint outer ring, an oil joint inner ring, a rotating shaft, a large sprocket, a chain, a small sprocket, and a reduction motor. The fixed shaft and the auxiliary bracket are fixedly connected via a tension sleeve, the oil joint inner ring is mounted on the rotating shaft outer ring, the oil joint outer ring is mounted on the oil joint inner ring, the rotating shaft inner ring is mounted on the fixed shaft, the outer ring is mounted in the main bracket, the reduction motor is mounted in the main bracket cavity, the reduction motor is connected to the large sprocket on the rotating shaft via a small sprocket and a chain; the rotating shaft end is connected to the turntable via a large turntable seat.

3. The turntable type double-station mobile trolley dishwasher liner biting machine according to claim 1 is characterized by: The cylinder body of the hydraulic cylinder is fixed on the support, the piston rod is connected to the connecting shaft and locked with a round nut, the connecting shaft is connected to the slide plate, the slide plate can move in the slideway of the support, and the slide plate is pressed by the side plate.

4. The turntable type double-station mobile trolley dishwasher liner biting machine according to claim 1 is characterized by: The double-station mobile trolley is composed of a tire frame, guide columns, an inner lining mold, a suction cup bracket, a suction cup, a mobile trolley, a trolley moving linear guide rail, a synchronous belt bracket, a trolley bracket, a synchronous belt, a synchronous pulley, and a three-in-one reduction motor. The trolley bracket is installed on the large base, and the trolley bracket is connected to the mobile trolley through the trolley moving linear guide rail. The three-in-one reduction motor and the synchronous belt support are installed on the trolley bracket, the synchronous pulley is installed on the three-in-one reduction motor, and the two ends of the synchronous belt are installed on the synchronous pulley. The middle of the synchronous belt is fixed to the middle of the mobile trolley with a pressure plate, and the tire frame is fixed on both sides of the mobile trolley. The tire frame is connected to the telescopic frame through four guide columns, and the telescopic frame is fixedly connected to the inner lining film. The lower part of the tire frame is equipped with a middle plate tensioning mechanism.

5. The turntable type double-station mobile trolley dishwasher liner biting machine according to claim 4 is characterized by: The middle plate tensioning mechanism is composed of a pull plate, a hinge shaft, a pull plate bracket, a guide column, a linear bearing, a cylinder, a cylinder connecting shaft, a cylinder fixing plate, a lifting cylinder, and a spherical bearing. The lifting cylinder is installed on a mobile trolley, and the mobile trolley is connected to the pull plate bracket through a linear bearing. The piston rod of the lifting cylinder is installed on the pull plate bracket, and the pull plate is fixed to the pull plate bracket with a hinge shaft. The pull plate rotates under the action of the cylinder; the piston rod of the cylinder is connected to the pull plate with a spherical bearing, and the cylinder body of the cylinder and the pull plate bracket are connected with a cylinder fixing plate and a cylinder connecting shaft.

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