Broken bridge aluminum door and window profile cleaning processor

By designing a broken bridge aluminum door and window profile cleaning and processing machine with driving components and mobile components, the profile cleaning process is achieved in all aspects, solving the problems of poor cleaning effects and cleaning blind spots, and improving the cleaning efficiency.

CN223056182UActive Publication Date: 2025-07-04CHENGDEHONG ANDA GLASS PRODUCTS CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421820029.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-30
Publication Date
2025-07-04
Estimated Expiration
2034-07-30

AI Technical Summary

Technical Problem

The broken bridge aluminum door and window profiles have poor cleaning effect during the cleaning process, which is inconvenient to clean the clamped profiles in all aspects, which easily creates cleaning blind spots and reduces the cleaning efficiency.

Method used

A broken bridge aluminum door and window profile cleaning and treatment machine is designed. Through the cooperation of the driving components and the moving components, the multi-directional movement of the profile and the full-circuit friction cleaning of the cleaning brush are realized. Combined with the spraying and washing of the cleaning nozzle, it ensures the complete removal of stains on the surface of the profile.

Benefits of technology

It improves the cleaning effect, ensures the comprehensive removal of stains on the surface of the profile, avoids the occurrence of cleaning blind spots, and improves the cleaning efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223056182U_ABST
    Figure CN223056182U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of aluminum profile surface treatment, and provides a broken bridge aluminum door and window profile cleaning treatment machine which comprises a bottom plate, a cleaning pool is fixedly installed on the upper end face of the bottom plate, U-shaped frames are fixedly installed on the portions, located on the two sides of the cleaning pool, of the upper end face of the bottom plate, and a driving assembly is installed at the top in the cleaning pool. According to the sectional material cleaning device, a driving motor is started to drive two cams on a first rotating rod to rotate, meanwhile, an inserting rod, an inserting groove, a spring, a protruding block and a groove are matched with one another, and therefore a sectional material clamped on one side of a connecting frame is driven to move in a reciprocating mode; and meanwhile, a driving bevel gear, a third driven bevel gear, a first driven bevel gear and a second driven bevel gear are matched with one another, so that the clamped profile rotates while reciprocating, the clamped profile rubs with the cleaning brush in all directions, and the cleaning effect of the cleaning brush is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum profile surface treatment, and specifically relates to a cleaning and processing machine for broken bridge aluminum door and window profiles. Background Technique

[0002] The broken bridge aluminum door and window profile refers to a composite profile with heat insulation effect processed by means of processes such as tooth opening, strip threading, and rolling, in which strip-shaped heat insulation materials are introduced into the strip threading grooves of aluminum alloy profiles and firmly bitten by the aluminum alloy profiles. Since the broken bridge aluminum door and window profiles will be contaminated by various equipment during the production process, stains such as white spots, mildew spots, and oil stains will be generated, and these stains must be thoroughly cleaned before surface treatment.

[0003] At present, the cleaning effect of broken bridge aluminum door and window profiles during the cleaning process is poor, it is not convenient to clean the clamped profiles comprehensively, it is easy to generate cleaning dead corners, and the cleaning efficiency is reduced. For this reason, the utility model provides a cleaning and processing machine for broken bridge aluminum door and window profiles. Content of the Utility Model

[0004] The utility model proposes a cleaning and processing machine for broken bridge aluminum door and window profiles to solve the problems of poor cleaning effect, inconvenient comprehensive cleaning of the clamped profiles, easy generation of cleaning dead corners, and reduced cleaning efficiency in the above-mentioned background technique.

[0005] The technical solution of the utility model is as follows:

[0006] A cleaning and processing machine for broken bridge aluminum door and window profiles includes a bottom plate. A cleaning pool is fixedly installed on the upper end surface of the bottom plate. U-shaped frames are fixedly installed on both sides of the cleaning pool on the upper end surface of the bottom plate. A driving component is installed on the inner top of the cleaning pool. A moving component is installed on the U-shaped frames. A cleaning component is installed on one side of the cleaning pool;

[0007] The driving component is a driving motor fixedly installed on one side of the top of the cleaning pool. Fixed blocks are symmetrically fixedly installed on both sides of the inner side wall of the cleaning pool. The output end of the driving motor penetrates through to one side of the fixed block through a bearing and a rotating rod one is fixedly installed. Cam wheels are symmetrically fixedly installed on both sides of the outer surface of the rotating rod one. A connecting frame is installed in the cleaning pool. Slots are opened on both sides of the connecting frame. Plug rods are fixedly installed on one side of the two fixed blocks. Rollers are symmetrically fixedly installed on one side of the connecting frame. Connecting blocks are fixedly installed on one side of the two fixed blocks. Springs are fixedly installed between the two connecting blocks and the connecting frame. A connecting plate one is fixedly installed on one side of the connecting frame. A sliding groove is opened on one side of the cleaning pool. The connecting plate one extends to the outside of the sliding groove;

[0008] On one side of the cleaning pool, a second connecting plate is fixedly installed. A sleeve rod is connected through the first connecting plate by a bearing. A second rotating rod is slidably connected inside the sleeve rod. One end of the second rotating rod passes through to one side of the second connecting plate through a bearing and is fixedly installed with a first driven bevel gear. On the outer surface of one end of the sleeve rod, a second driven bevel gear is fixedly installed. On one end of the second rotating rod, convex blocks are symmetrically fixedly installed. Grooves matching the convex blocks are symmetrically formed inside the sleeve rod. Both ends of the connecting frame are rotatably connected with U-shaped plates. A third rotating rod passes through one side of the sliding groove. One end of the third rotating rod is fixedly installed with a third driven bevel gear. The other end of the third rotating rod passes through to one side of the connecting frame through a bearing and is fixedly installed on one side of the U-shaped plate. The end of the first rotating rod away from the driving motor passes through to the outside of the cleaning pool through a bearing and is fixedly installed with a driving bevel gear.

[0009] Preferably, the moving assembly includes an electric push rod one fixedly installed on the top of the U-shaped frame. A connection box is installed at the bottom of the U-shaped frame. Telescopic rods are symmetrically fixedly installed on both sides of the top wall of the U-shaped frame. The output end of the electric push rod one and the bottom ends of the two telescopic rods are both fixedly installed with a first T-shaped slider. A first T-shaped sliding groove matching the first T-shaped slider is formed on the top of the connection box. An electric push rod two is fixedly installed on one side of the top of the U-shaped frame. The output end of the electric push rod two passes through to one side of the U-shaped frame and is fixedly installed with a connecting vertical plate. A second T-shaped slider is fixedly installed on one side of the connection box. A second T-shaped sliding groove matching the second T-shaped slider is formed on one side of the connecting vertical plate.

[0010] Preferably, the cleaning assembly includes cleaning brushes and cleaning spray nozzles evenly distributed on the lower end surface of the connection box. On one side of the bottom of the cleaning pool, a connecting pipe is fixedly communicated. One end of the connecting pipe is fixedly communicated with a telescopic hose. One end of the telescopic hose is fixedly communicated inside the connection box. A water pump is arranged on the connecting pipe. A filter screen is fixedly installed at one end of the connecting pipe.

[0011] Preferably, the inserting rod matches the inserting slot, and the inserting rod is slidably connected in the inserting slot.

[0012] Preferably, the two rollers are always in contact with the cam.

[0013] Preferably, the driving bevel gear is meshed with the first driven bevel gear, and the second driven bevel gear is meshed with the third driven bevel gear.

[0014] Preferably, the length of the cleaning brush is longer than that of the cleaning spray nozzle, and the cleaning spray nozzle is communicated with the inside of the connection box.

[0015] Preferably, clamping mechanisms are installed on both of the U-shaped plates.

[0016] The working principle and beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, by starting the driving motor to drive the first rotating rod to rotate, the first rotating rod drives two cams to rotate. While the two cams are rotating, through the mutual cooperation among the inserting rod, the inserting slot, the spring, the convex block and the groove, the profile clamped on one side of the connecting frame is driven to reciprocate. At the same time, through the mutual cooperation among the driving bevel gear, the third driven bevel gear, the third rotating rod, the first driven bevel gear, the second driven bevel gear, the second rotating rod and the sleeve rod, while the clamped profile reciprocates, it is rotated, so that the clamped profile rubs against the cleaning brush in all directions, thereby improving the cleaning effect of the cleaning brush and achieving comprehensive cleaning.

[0018] 2. In the present utility model, by starting the first electric push rod to drive the cleaning brush and the cleaning nozzle at the bottom of the connecting box to approach the clamped profile, then starting the second electric push rod to drive the connecting box to reciprocate, and then through the cooperation of the driving component, the cleaning brush can clean the clamped profile back and forth, left and right, thereby further improving the cleaning effect. Description of the Drawings

[0019] The following further elaborates on the present utility model in conjunction with the drawings and specific embodiments.

[0020] Figure 1 is a three-dimensional external structure view of the present utility model;

[0021] Figure 2 is a schematic diagram of the driving component of the present utility model;

[0022] Figure 3 is a schematic diagram of the structure at position A in the driving component of the present utility model;

[0023] Figure 4 is a schematic diagram of the moving component of the present utility model;

[0024] Figure 5 is a schematic diagram of the cleaning component of the present utility model.

[0025] In the figure: 1, bottom plate; 2, cleaning pool; 3, U-shaped frame; 100, driving component; 101, driving motor; 102, fixing block; 103, first rotating rod; 104, cam; 105, connecting frame; 106, slot; 107, inserting rod; 108, roller; 109, connecting block; 110, spring; 111, first connecting plate; 112, sliding groove; 113, second connecting plate; 114, sleeve rod; 115, second rotating rod; 116, first driven bevel gear; 117, second driven bevel gear; 118, convex block; 119, groove; 120, U-shaped plate; 121, third rotating rod; 122, third driven bevel gear; 123, driving bevel gear; 200, moving component; 201, first electric push rod; 202, connecting box; 203, telescopic rod; 204, first T-shaped slider; 205, first T-shaped sliding groove; 206, second electric push rod; 207, connecting vertical plate; 208, second T-shaped slider; 209, second T-shaped sliding groove; 300, cleaning component; 301, cleaning brush; 302, cleaning spray head; 303, connecting pipe; 304, telescopic hose; 305, water pump. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] As Figures 1 to 5 shown, this embodiment proposes a cleaning and processing machine for broken bridge aluminum door and window profiles, including a bottom plate 1. A cleaning pool 2 is fixedly installed on the upper end surface of the bottom plate 1. U-shaped frames 3 are fixedly installed on both sides of the cleaning pool 2 on the upper end surface of the bottom plate 1. A driving component 100 is installed on the inner top of the cleaning pool 2. A moving component 200 is installed on the U-shaped frames 3. A cleaning component 300 is installed on one side of the cleaning pool 2;

[0029] The driving component 100 is fixedly installed with a driving motor 101 on one side at the top of the cleaning tank 2. A protective box is arranged outside the driving motor 101. The input end of the driving motor 101 is connected to a power supply through an external cable. Fixed blocks 102 are fixedly installed on both symmetric sides of the inner side wall of the cleaning tank 2. The output end of the driving motor 101 penetrates through to one side of the fixed block 102 through a bearing and is fixedly installed with a first rotating rod 103. Cam 104 is fixedly installed on both symmetric sides of the outer surface of the first rotating rod 103. A connecting frame 105 is installed in the cleaning tank 2. Slots 106 are opened on both sides of the connecting frame 105. Plug rods 107 are fixedly installed on one side of the two fixed blocks 102. The plug rods 107 are matched with the slots 106 and are slidably connected in the slots 106. Rollers 108 are symmetrically and fixedly installed on one side of the connecting frame 105. The two rollers 108 are always in contact with the cam 104. Connecting blocks 109 are fixedly installed on one side of the two fixed blocks 102. Springs 110 are fixedly installed between the two connecting blocks 109 and the connecting frame 105. A first connecting plate 111 is fixedly installed on one side of the connecting frame 105. A sliding groove 112 is opened on one side of the cleaning tank 2. The first connecting plate 111 extends to the outside of the sliding groove 112;

[0030] A second connecting plate 113 is fixedly installed on one side of the cleaning tank 2. A sleeve rod 114 is connected through a bearing on the first connecting plate 111. A second rotating rod 115 is slidably connected in the sleeve rod 114. One end of the second rotating rod 115 penetrates through to one side of the second connecting plate 113 through a bearing and is fixedly installed with a first driven bevel gear 116. A second driven bevel gear 117 is fixedly installed on the outer surface of one end of the sleeve rod 114. A driving bevel gear 123 is meshed and connected between the driving bevel gear 123 and the first driven bevel gear 116. The second driven bevel gear 117 is meshed and connected with a third driven bevel gear 122. Protrusions 118 are symmetrically and fixedly installed at one end of the second rotating rod 115. Grooves 119 are symmetrically opened on the inner side of the sleeve rod 114 and are matched with the protrusions 118. U-shaped plates 120 are rotatably connected to both ends of the connecting frame 105. A third rotating rod 121 penetrates through one side of the sliding groove 112. A third driven bevel gear 122 is fixedly installed at one end of the third rotating rod 121. The other end of the third rotating rod 121 penetrates through to one side of the connecting frame 105 through a bearing and is fixedly installed on one side of the U-shaped plate 120. Clamping mechanisms are installed on both U-shaped plates 120. The clamping mechanism includes a protective cover, an electric push rod and a clamping plate. The clamping mechanism can clamp and fix the profile. One end of the first rotating rod 103 away from the driving motor 101 penetrates through to the outside of the cleaning tank 2 through a bearing and is fixedly installed with a driving bevel gear 123;

[0031] Through the provided driving component 100, the clamped profile can be effectively moved in multiple directions. When it is necessary to move the clamped profile in multiple directions, start the driving motor 101 to drive the first rotating rod 103 to rotate. The first rotating rod 103 drives the two cams 104 to rotate. While rotating, the two cams 104 push the connecting frame 105 on one side of the roller 108 to move reciprocally. At the same time, through the reset action of the spring 110, the cams 104 are always in contact with the roller 108, thereby reciprocally moving the profile clamped on one side of the connecting frame 105. While the first rotating rod 103 is rotating, it drives the driving bevel gear 123 to rotate. The driving bevel gear 123 drives the first driven bevel gear 116 to rotate. The first driven bevel gear 116 drives the second driven bevel gear 117 to rotate, thereby driving the clamped profile to rotate while reciprocally moving, so as to move the clamped profile in multiple directions.

[0032] Embodiment 2

[0033] As Figures 1 to 5 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes that the moving component 200 includes an electric push rod one 201 fixedly installed on the top of the U-shaped frame 3. The input end of the electric push rod one 201 is connected to the power supply through an external cable. A connection box 202 is installed at the bottom of the U-shaped frame 3. Symmetrically fixed on both sides of the top wall of the U-shaped frame 3 are telescopic rods 203. Fixedly installed at the output end of the electric push rod one 201 and the bottom ends of the two telescopic rods 203 are T-shaped sliders one 204. A T-shaped chute one 205 matching the T-shaped slider one 204 is opened at the top of the connection box 202. Fixedly installed on one side of the top of the U-shaped frame 3 is an electric push rod two 206. The input end of the electric push rod two 206 is connected to the power supply through an external cable. The output end of the electric push rod two 206 penetrates to one side of the U-shaped frame 3 and is fixedly installed with a connecting vertical plate 207. Fixedly installed on one side of the connection box 202 is a T-shaped slider two 208. A T-shaped chute two 209 matching the T-shaped slider two 208 is opened on one side of the connecting vertical plate 207. Through the provided moving component 200, the connection box 202 can be effectively driven to move reciprocally. When it is necessary to drive the connection box 202 to move reciprocally, first start the electric push rod one 201 to drive the connection box 202 to move downward, making the connection box 202 close to the clamped profile. Then start the electric push rod two 206 to drive the connection box 202 to move reciprocally, thereby driving the connection box 202 to move reciprocally.

[0034] The cleaning assembly 300 includes cleaning brushes 301 and cleaning nozzles 302 that are equidistantly distributed on the lower end surface of the connection box 202. The length of the cleaning brushes 301 is longer than that of the cleaning nozzles 302. The cleaning nozzles 302 communicate with the inside of the connection box 202. One side of the bottom of the cleaning pool 2 is fixedly communicated with a connecting pipe 303. One end of the connecting pipe 303 is fixedly communicated with a telescopic hose 304. One end of the telescopic hose 304 is fixedly communicated with the inside of the connection box 202. A water pump 305 is arranged on the connecting pipe 303. The input end of the water pump 305 is connected to the power supply through an external cable. A filter screen is fixedly installed at one end of the connecting pipe 303. The filter screen facilitates the filtration of sewage. The profile can be effectively cleaned through the arranged cleaning assembly 300. When it is necessary to clean the profile, the water in the cleaning pool 2 is pumped out by starting the water pump 305 and filtered through the filter screen, and then transported to the inside of the connection box 202 through the connecting pipe 303 and the telescopic hose 304, and then sprayed out through the cleaning nozzles 302, so as to clean the profile.

[0035] During operation, first fix the profile through the clamping mechanism, then put the cleaning liquid into the cleaning pool 2, and then start the first electric push rod 201 to drive the connection box 202 to move downward, so that the cleaning brushes 301 at the bottom of the connection box 202 contact the profile. Then start the water pump 305 to pump out the water in the cleaning pool 2 and filter it through the filter screen, and then transport it to the inside of the connection box 202 through the connecting pipe 303 and the telescopic hose 304, and then spray it out through the cleaning nozzles 302, so as to clean the profile. Then start the second electric push rod 206 to drive the cleaning brushes 301 at the bottom of the connection box 202 to move reciprocally, so that the cleaning brushes 301 and the clamped profile rub back and forth to achieve cleaning. At the same time, start the driving motor 101 to drive the first rotating rod 103 to rotate. The first rotating rod 103 drives the two cams 104 to rotate. While rotating, the two cams 104 push the connecting frame 105 on one side of the roller 108 to move reciprocally. At the same time, through the reset function of the spring 110, the cams 104 are always in contact with the roller 108, so as to reciprocally move the profile clamped on one side of the connecting frame 105. While the first rotating rod 103 is rotating, it drives the driving bevel gear 123 to rotate. The driving bevel gear 123 drives the first driven bevel gear 116 to rotate. The first driven bevel gear 116 drives the second driven bevel gear 117 to rotate, so as to drive the clamped profile to move reciprocally and rotate at the same time, so as to clean the clamped profile in all directions and improve the cleaning effect.

[0036] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cleaning and processing machine for broken bridge aluminum door and window profiles, characterized in that, It includes a bottom plate (1), on the upper end surface of the bottom plate (1), a cleaning pool (2) is fixedly installed. On the upper end surface of the bottom plate (1) and on both sides of the cleaning pool (2), U-shaped frames (3) are fixedly installed. Inside the top of the cleaning pool (2), a driving component (100) is installed. On the U-shaped frames (3), a moving component (200) is installed. On one side of the cleaning pool (2), a cleaning component (300) is installed. The driving component (100) includes a driving motor (101) fixedly installed on one side of the top of the cleaning pool (2). On the symmetric two sides of the inner side wall of the cleaning pool (2), fixed blocks (102) are fixedly installed. The output end of the driving motor (101) passes through to one side of the fixed block (102) through a bearing and a rotating rod one (103) is fixedly installed. On the symmetric two sides of the outer surface of the rotating rod one (103), cams (104) are fixedly installed. Inside the cleaning pool (2), a connecting frame (105) is installed. On both sides of the connecting frame (105), slots (106) are opened. On one side of the two fixed blocks (102), inserting rods (107) are fixedly installed. On one side of the connecting frame (105), rollers (108) are symmetrically fixedly installed. On one side of the two fixed blocks (102), connecting blocks (109) are fixedly installed. Between the two connecting blocks (109) and the connecting frame (105), springs (110) are fixedly installed. On one side of the connecting frame (105), a connecting plate one (111) is fixedly installed. On one side of the cleaning pool (2), a sliding slot (112) is opened. The connecting plate one (111) extends to the outside of the sliding slot (112). On one side of the cleaning pool (2), a connecting plate two (113) is fixedly installed. On the connecting plate one (111), a sleeve rod (114) is connected through a bearing. Inside the sleeve rod (114), a rotating rod two (115) is slidably connected. One end of the rotating rod two (115) passes through to one side of the connecting plate two (113) through a bearing and a driven bevel gear one (116) is fixedly installed. On the outer surface of one end of the sleeve rod (114), a driven bevel gear two (117) is fixedly installed. On one end of the rotating rod two (115), bumps (118) are symmetrically fixedly installed. Inside the sleeve rod (114), grooves (119) matching the bumps (118) are symmetrically opened. At both ends of the connecting frame (105), U-shaped plates (120) are rotatably connected. Inside the sliding slot (112), a rotating rod three (121) penetrates through one side. One end of the rotating rod three (121) is fixedly installed with a driven bevel gear three (122). The other end of the rotating rod three (121) passes through to one side of the connecting frame (105) through a bearing and is fixedly installed on one side of the U-shaped plate (120). The end of the rotating rod one (103) away from the driving motor (101) passes through to the outside of the cleaning pool (2) through a bearing and a driving bevel gear (123) is fixedly installed.

2. The cleaning and treating machine for profile of broken bridge aluminum doors and windows according to claim 1, wherein, The moving component (200) includes an electric push rod one (201) fixedly installed on the top of the U-shaped frame (3). A connection box (202) is installed at the bottom of the U-shaped frame (3). Telescopic rods (203) are fixedly installed on both symmetric sides of the top wall of the U-shaped frame (3). T-shaped sliders one (204) are fixedly installed at the output end of the electric push rod one (201) and the bottom ends of the two telescopic rods (203). A T-shaped chute one (205) matching the T-shaped slider one (204) is formed at the top of the connection box (202). An electric push rod two (206) is fixedly installed on one side of the top of the U-shaped frame (3). The output end of the electric push rod two (206) penetrates to one side of the U-shaped frame (3) and is fixedly installed with a connecting vertical plate (207). A T-shaped slider two (208) is fixedly installed on one side of the connection box (202). A T-shaped chute two (209) matching the T-shaped slider two (208) is formed on one side of the connecting vertical plate (207).

3. A cleaning and processing machine for profile of broken bridge aluminum doors and windows according to claim 1, characterized in that, The cleaning component (300) includes cleaning brushes (301) and cleaning spray heads (302) evenly distributed on the lower end surface of the connection box (202). A connection pipe (303) is fixedly communicated with one side of the bottom of the cleaning pool (2). One end of the connection pipe (303) is fixedly communicated with a telescopic hose (304). One end of the telescopic hose (304) is fixedly communicated with the inside of the connection box (202). A water pump (305) is arranged on the connection pipe (303). A filter screen is fixedly installed at one end of the connection pipe (303).

4. A cleaning and processing machine for profile of broken bridge aluminum doors and windows according to claim 1, characterized in that, The plug rod (107) matches the slot (106), and the plug rod (107) is slidably connected in the slot (106).

5. The cleaning and processing machine for a broken bridge aluminum door and window profile according to claim 1, wherein, The two rollers (108) are always in contact with the cam (104).

6. The cleaning and processing machine for profile of broken bridge aluminum doors and windows according to claim 1, characterized in that, The driving bevel gear (123) is meshed with the driven bevel gear one (116), and the driven bevel gear two (117) is meshed with the driven bevel gear three (122).

7. The cleaning and processing machine for profile of broken bridge aluminum alloy doors and windows according to claim 3, characterized in that The length of the cleaning brush (301) is longer than that of the cleaning spray head (302), and the cleaning spray head (302) is communicated with the inside of the connection box (202).

8. A cleaning and processing machine for broken bridge aluminum door and window profiles according to claim 1, characterized in that, Clamping mechanisms are installed on both of the two U-shaped plates (120).