Multi-shaft gantry welding machine

Abstract

The multi-axis gantry welding machine comprises a machine base, a supporting plate, a purification structure, a drainage structure and a linkage structure, a multi-axis gantry frame is arranged at the upper end of the machine base, a multi-degree-of-freedom welding robot is arranged in the multi-axis gantry frame, and a sleeve is installed in the supporting plate in a penetrating mode; a suction cover connected to the outer side of the upper end of the multi-axis portal frame in a sleeving mode is arranged at the lower end of the sleeve, a first machine shell and a second machine shell are arranged at the upper end of the supporting plate, a grid cylinder is arranged in the sleeve, and spiral blades are arranged on the outer wall of the grid cylinder; air holes distributed in a rectangular array and penetrating through the cavity are formed in the upper end of the machine base, air supply boxes are arranged on the inner walls of the two sides of the multi-axis portal frame, and nozzles inclining towards the center of the suction cover are installed at the upper ends of the air supply boxes in a penetrating mode. According to the multi-axis gantry welding machine, harmful gas generated by a welded part is blown upwards, and the situation that the harmful gas generated in the welding process is prone to being diffused all around is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of marine petroleum engineering welding, and in particular relates to a multi-axis gantry welding machine. Background Art

[0002] Multi-axis gantry welding machines are widely used in heavy industry. With the development of intelligence, robotic welding arms are used in conjunction with gantry frames to weld large workpieces. Multi-axis gantry can provide lateral and longitudinal movement, while robotic welding arms provide greater flexibility during the welding process. Their combined use can fully utilize the advantages of both and adapt to welding workpieces of different shapes and sizes. The welding of large workpieces will also lead to an increase in harmful gases generated during welding.

[0003] Publication number CN218638906U retrieved discloses a gantry-type multi-axis welding robot, comprising two walking rails, two vertical beams, and a multi-axis robot body, wherein the two walking rails are arranged in parallel, the two vertical beams are installed at the output ends of the walking rails, and an adjustment component is installed between the two vertical beams. With the cooperation of the adjustment component and the walking rails, the utility model can achieve stable adjustment of the X, Y, and Z axes of the multi-axis robot body, further expanding the processing range of the multi-axis robot body. At the same time, the locking component can be used to quickly connect and fix the multi-axis robot body to the equipment, and the subsequent disassembly is convenient, reducing the difficulty of installation and disassembly for the staff and the subsequent maintenance intensity. The multi-axis robot body can be installed and fixed without the help of external auxiliary tools, avoiding the problem of cumbersome disassembly and high maintenance intensity of the traditional bolt installation method for connecting the multi-axis robot body.

[0004] This patented technology has the advantage of convenient disassembly and assembly of the multi-axis robot body during use, but there are still shortcomings during use. Harmful gases will be generated during the welding process, especially when welding large workpieces. Since the harmful gases generated during welding have a wide diffusion range, the traditional exhaust system cannot effectively cover the entire welding area, making the treatment of harmful gases not timely and sufficient, causing serious environmental pollution and harm to human health.

[0005] Therefore, it is urgent to design a multi-axis gantry welding machine to solve the above-mentioned problems. Summary of the Invention

[0006] In order to solve the technical problem mentioned in the background technology that the harmful gases generated during the welding process have a wide diffusion range, the traditional exhaust system cannot effectively cover the entire welding area, and the treatment of harmful gases is not timely and sufficient, a multi-axis gantry welding machine is provided to solve the problem of insufficient and timely treatment of harmful gases generated during the welding process.

[0007] To achieve the above-mentioned purpose, the specific technical solution of the multi-axis gantry welding machine of the present invention is as follows: A multi-axis gantry welding machine comprises a machine base, a support plate, a purification structure, a drainage structure and a linkage structure, a multi-axis gantry is provided at the upper end of the machine base, a multi-degree-of-freedom welding robot is provided inside the multi-axis gantry, a sleeve is installed through the inside of the support plate, a suction hood is provided at the lower end of the sleeve and is sleeved on the outer side of the upper end of the multi-axis gantry, a first housing and a second housing are respectively provided at the upper ends of the support plates, a grid tube is provided inside the sleeve, spiral blades are provided on the outer wall of the grid tube, a hollow cavity is provided inside the machine base, air holes distributed in a rectangular array and passing through the cavity are opened inside the upper end of the machine base, air boxes are provided on both sides of the inner walls of the multi-axis gantry, and a nozzle inclined to the center of the suction hood is installed through the upper end of the air box; the linkage structure comprises a motor fixedly arranged on the upper end of the support plate, a rotating shaft is provided at the output end of the motor, mounting shafts are rotatably installed inside the first housing and the second housing, and impellers are sleeved on the outer walls of the mounting shafts.

[0008] Furthermore, columns are installed throughout the four corners of the suction hood, and the upper and lower ends of the columns are respectively connected to the support plate and the multi-axis gantry.

[0009] Furthermore, the purification structure includes a top cover located at the upper end of the sleeve, which is annular, hollow inside, and whose inner wall is sleeved on the outer wall of the grid tube. The suction end of the first housing is provided with a suction pipe that passes through the top cover.

[0010] Furthermore, a sealing plug is provided inside the upper end of the grid tube, and a downwardly inclined discharge pipe is installed through the lower end of the grid tube, and a control valve is provided inside the discharge pipe.

[0011] Furthermore, the sides of the spiral blades are connected to the inner wall of the sleeve, activated carbon is arranged inside the grid tube, and spiral flow channels are arranged between the spiral blades.

[0012] Furthermore, the drainage structure includes a diversion box fixed at the rear end of the suction hood, a mounting pipe fixed below the machine base, and diversion nozzles installed inside the upper end of the mounting pipe and the lower end of the machine base and distributed equidistantly.

[0013] Furthermore, a third air supply pipe is installed through one end of the installation pipe, one end of the third air supply pipe is installed through the inside of the diversion box, and a spiral hose is connected to the middle end of the third air supply pipe.

[0014] Furthermore, the output end of the second housing is provided with a first air supply pipe that passes through the interior of the diverter box, and the lower end side of the diverter box is provided with a second air supply pipe that is installed through the air supply box.

[0015] Furthermore, two groups of support legs distributed at equal distances are provided at the lower end of the machine base, and the mounting tube is located between the support legs.

[0016] Furthermore, the impellers inside the first casing and the second casing face opposite directions, a worm gear is provided at one end of the mounting shaft, a worm engaged with the worm gear is sleeved on the outer wall of the rotating shaft, a bearing bracket is provided on the upper end of the support plate, and one end of the rotating shaft is rotatably inserted into the bearing bracket.

[0017] The multi-axis gantry welding machine of the present invention has the following advantages: 1. A suction hood is provided at the upper end of the gantry body to extract the gas at the welding site. After the harmful gas enters the sleeve, it is guided by a spiral flow channel and contacts the activated carbon inside the grid tube along the way. The activated carbon adsorbs and purifies the harmful substances in the gas. The spiral flow channel prolongs the residence time of the gas inside the sleeve, compresses the space occupied by the purification component, and occupies a small area, which is suitable for situations where the interior of the welding device is limited. 2. A drainage structure is provided inside the welding device. The interior of the machine base is hollow and is connected to the outside world with a number of air holes. When welding, a positive pressure airflow is formed from the bottom to the top of the machine body, and the harmful gas generated by the weld is blown upward. When the gas in the upward flow pipe passes through the nozzle, it is ejected by the upward inclined airflow output by the nozzle and guided into the interior of the suction hood. This prevents the harmful gas generated by the multi-axis gantry welding machine during the welding process of large workpieces from easily spreading to the surroundings. The harmful gas is not discharged in a timely and sufficient manner, which reduces the quality of the working environment and harms the health of the workers. With the help of positive pressure airflow and the fluid dynamics characteristics of the nozzle, the harmful gas generated by the weld is quickly guided into the interior of the suction hood, thereby improving the emission efficiency. 3. At the same time, the purification structure and the drainage structure are driven by a linkage structure. The motor of the linkage structure is the only driving source, which reduces the equipment maintenance cost and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the multi-axis gantry welding machine of the present invention from a first angle of view; Figure 2 This is a schematic diagram of the three-dimensional structure of the multi-axis gantry welding machine of the present invention from a second angle of view from the main perspective; Figure 3 Schematic diagram of the bottom-up stereoscopic structure of the multi-axis gantry welding machine of the present invention; Figure 4 This is a schematic diagram of the main three-dimensional structure of the linkage structure of the multi-axis gantry welding machine of the present invention; Figure 5 This is a schematic diagram of a rear sectional perspective structure of a first housing of a multi-axis gantry welding machine according to the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the suction hood of the multi-axis gantry welding machine of the present invention when viewed from above; Figure 7 It is a schematic diagram of the main cross-sectional perspective structure of the interior of the casing and the suction hood of the multi-axis gantry welding machine of the present invention; Figure 8 It is a schematic diagram of the top cross-sectional three-dimensional structure of the sleeve of the multi-axis gantry welding machine of the present invention; Figure 9 It is a top view of the three-dimensional structure of the drainage structure of the multi-axis gantry welding machine of the present invention; Figure 10 This is a schematic diagram of the main cross-sectional perspective structure of the nozzle of the multi-axis gantry welding machine of the present invention; Figure 11 The figure is a top-sectional three-dimensional structural diagram of the machine base of the multi-axis gantry welding machine of the present invention.

[0019] Description of the marks in the figure: 100. Machine base; 101. Multi-axis gantry; 102. Multi-degree-of-freedom welding robot; 103. Support legs; 200, support plate; 201, column; 300, purification structure; 301, first housing; 302, suction pipe; 303, sleeve; 304, grid tube; 305, spiral blade; 306, top cover; 307, suction cover; 308, sealing plug; 309, flow channel; 310, discharge pipe; 400, drainage structure; 401, second housing; 402, first air supply pipe; 403, diverter box; 404, second air supply pipe; 405, air supply box; 406, nozzle; 407, spiral hose; 408, third air supply pipe; 409, mounting tube; 410, diverter nozzle; 411, cavity; 412, air hole; 500, linkage structure; 501, motor; 502, worm gear; 503, rotating shaft; 504, worm; 505, bearing bracket; 506, mounting shaft; 507, impeller. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] Those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0022] Please refer to the attached Figure 1 To the attached Figure 11 The multi-axis gantry welding machine of the present invention is described.

[0023] The multi-axis gantry welding machine of the present invention includes a machine base 100, a support plate 200, a purification structure 300, a drainage structure 400 and a linkage structure 500. A multi-axis gantry 101 is provided at the upper end of the machine base 100, and a multi-degree-of-freedom welding robot 102 is provided inside the multi-axis gantry 101. Two sets of equidistant support legs 103 are provided at the lower end of the machine base 100, and a mounting tube 409 is located between the support legs 103. The multi-axis gantry 101 provides X, Y, and Z axis movement capabilities, allowing the multi-degree-of-freedom welding robot 102 to stably reach the designated welding position. The multi-degree-of-freedom welding robot 102 can be adjusted at multiple angles and directions during operation, and can complete welding tasks on various surfaces of complex workpieces. The multi-axis gantry 101 and the multi-degree-of-freedom welding robot 102 can achieve collaborative operation through program control, and the multi-axis gantry 101 provides a relatively fixed working platform.

[0024] The multi-degree-of-freedom welding robot 102 can perform high-precision and complex welding tasks on this platform. The combination of the two is suitable for welding large and medium-sized workpieces in heavy industry. When welding, clamping tooling is required. It is explained that the tooling for clamping the workpiece is mounted on the machine base 100 and has travel space between it and the multi-axis gantry 101 to ensure the movement of the multi-axis gantry 101 and the use of part of the drainage structure 400.

[0025] As a preferred embodiment, a sleeve 303 is installed through the inside of the support plate 200, and a suction hood 307 is provided at the lower end of the sleeve 303, which is sleeved on the outer side of the upper end of the multi-axis gantry 101. The upper end of the support plate 200 is respectively provided with a first shell 301 and a second shell 401, a grid tube 304 is provided inside the sleeve 303, and a spiral blade 305 is provided on the outer wall of the grid tube 304. A hollow cavity 411 is provided inside the machine base 100, and columns 201 are installed through the four corners of the suction hood 307. The upper and lower ends of the columns 201 are respectively connected to the support plate 200 and the multi-axis gantry 101.

[0026] The purification structure 300 includes a top cover 306 located at the upper end of the sleeve 303, which is annular, hollow inside, and the inner wall of which is sleeved on the outer wall of the grid tube 304. The suction end of the first shell 301 is provided with a suction pipe 302 that passes through the top cover 306. A sealing plug 308 is provided inside the upper end of the grid tube 304. A downward-inclined discharge pipe 310 is installed through the lower end of the grid tube 304. A control valve is provided inside the discharge pipe 310. The side of the spiral blade 305 is connected to the inner wall of the sleeve 303. Activated carbon is provided inside the grid tube 304, and a spiral flow channel 309 is provided between the spiral blades 305.

[0027] When the impeller 507 inside the first casing 301 rotates, the suction force acts on the flow channel 309, causing the suction hood 307 to suck the gas below, and the harmful gas generated during welding that is mixed into the gas is also sucked into the flow channel 309. The spiral flow channel 309 allows the gas to stay inside the sleeve 303 for a long time, and when flowing, it enters through the pores inside the mesh tube 304 and comes into contact with the activated carbon. The activated carbon adsorbs the harmful substances in the gas. The spiral flow channel 309 reduces the installation space occupied by the purification structure 300. On this basis, the purification effect of the exhaust gas is improved.

[0028] After the activated carbon is saturated after a period of use, the control valve is opened to allow the activated carbon inside the grid tube 304 to flow out along the inclined discharge pipe 310 under the action of gravity, making it easy to replace the activated carbon, avoiding the disassembly and assembly of a large number of fixing parts of the purification structure 300, and reducing the difficulty of maintenance and the labor intensity of the staff.

[0029] As a preferred embodiment, air holes 412 distributed in a rectangular array and passing through the cavity 411 are opened inside the upper end of the machine base 100, and air supply boxes 405 are provided on the inner walls on both sides of the multi-axis gantry 101. A nozzle 406 inclined toward the center of the suction hood 307 is installed through the upper end of the air supply box 405. The drainage structure 400 includes a diversion box 403 fixed at the rear end of the suction hood 307, a mounting tube 409 fixed under the machine base 100, and diversion nozzles 410 installed through the upper end of the mounting tube 409 and the lower end of the machine base 100 and distributed at equal intervals.

[0030] A third air supply pipe 408 is installed through one end of the installation tube 409, and one end of the third air supply pipe 408 is installed through the inside of the diversion box 403. The middle end of the third air supply pipe 408 is connected with a spiral hose 407. The output end of the second housing 401 is provided with a first air supply pipe 402 that passes through the inside of the diversion box 403, and the lower end side of the diversion box 403 is provided with a second air supply pipe 404 that is installed through the air supply box 405.

[0031] In the welding of heavy structural parts, due to the large specifications of the structural parts and the large volume of the multi-axis gantry 101, when the multi-degree-of-freedom welding robot 102 welds, the suction force of the suction hood 307 is difficult to completely suck out the exhaust gas generated. At this time, the gas transported in the drainage structure 400 is diverted to multiple points. First, the positive pressure-lifting airflow is transported from the air hole 412 inside the machine base 100 to the upper right, so that the exhaust gas diffused to the outside flows upward.

[0032] When passing through the air box 405, the gas diverted to the inner wall of the air box 405 is output through the nozzle 406. The opening position of the nozzle 406 is gradually reduced, which pressurizes the output gas and transports the air flow upward at an angle, so that the exhaust gas guided by the lifting air flow is assisted for the second time and reflected into the interior of the suction hood 307.

[0033] In conjunction with the suction airflow of the purification structure 300, the welding waste gas with a large diffusion surface is effectively suctioned and purified. When purifying the harmful gases from welding large workpieces, larger-scale purification equipment and more complex exhaust systems are often required, which avoids the difficulty of the waste gas treatment components in adapting to a large range of waste gas diffusion. The welding harmful gases are effectively purified, the working environment is improved, and the physical protection of the workers is enhanced.

[0034] As a preferred embodiment, the linkage structure 500 includes a motor 501 fixed to the upper end of the support plate 200, and a rotating shaft 503 is provided at the output end of the motor 501. The first housing 301 and the second housing 401 are both rotatably installed with mounting shafts 506, and the outer walls of the mounting shafts 506 are both sleeved with impellers 507. The impellers 507 inside the first housing 301 and the second housing 401 face opposite directions. A worm gear 502 is provided at one end of the mounting shaft 506, and a worm 504 meshing with the worm gear 502 is sleeved on the outer wall of the rotating shaft 503. A bearing bracket 505 is provided at the upper end of the support plate 200, and one end of the rotating shaft 503 is rotatably inserted into the bearing bracket 505.

[0035] When the purification structure 300 and the drainage structure 400 are in use, the motor 501 drives the rotating shaft 503 to rotate, which in turn drives the worm 504 to push the worm wheel 502, and drives the mounting shaft 506 to rotate, so that the impeller 507 rotates. The two sets of impellers 507 are rotated by the driving force output by the same motor 501. Compared with other transmission structures, the worm 504 transmission system can achieve a relatively large reduction ratio, so that the driving components are relatively more compact. The worm 504 transmission usually produces less noise, improves the working environment, and reduces energy consumption, which provides assistance for subsequent maintenance and reduces maintenance costs.

[0036] The working principle of the multi-axis gantry welding machine in this application is as follows: The clamping fixture is placed on the machine base 100 to clamp the workpiece. The multi-axis gantry 101 moves, driving the multi-degree-of-freedom welding robot 102 to the specified position to weld the welding surface of the workpiece. The motor 501 drives the rotating shaft 503 to rotate, driving the two worms 504 to rotate. The worms 504 push the worm gear 502, driving the installation shaft 506 to rotate. The installation shaft 506 is driven by the rotational force of the worm gear 502, driving the impeller 507 to rotate. Suction airflow and positive pressure airflow are generated inside the first housing 301 and the second housing 401 respectively. The suction airflow enters the sleeve 303 through the suction pipe 302 and is transferred to the suction cover 307 through the flow channel 309 to suck the space below. At the same time, the positive pressure airflow is delivered to the inside of the diversion box 403 through the first air supply pipe 402, and then diverted to the inside of the two second air supply pipes 404 and the third air supply pipe 408. During the movement of the gantry, the spiral hose 407 can be pulled up to ensure the effective conduction of the positive pressure airflow. The airflow enters the installation pipe 409 through the third air supply pipe 408, enters the diversion nozzle 410 through the installation pipe 409, and is output through a plurality of air holes 412. The output gas flows upward, blowing the escaping fly upward, forming a positive pressure lifting airflow, and preventing it from diffusing outside the fly box; At the same time, the airflow delivered by the second air supply pipe 404 enters the interior of the air supply box 405. When passing through the nozzle 406, the airflow flows obliquely upward, guiding the exhaust gas blown by the rising airflow into the interior of the suction hood 307. The exhaust gas enters the flow channel 309 through the suction force of the suction hood 307 and comes into contact with the activated carbon. The activated carbon absorbs and purifies harmful substances in the gas. After the activated carbon is saturated, the sealing plug 308 is taken out, the control valve is opened, and the activated carbon is output through the discharge pipe 310. After the interior of the grid tube 304 is emptied, the control valve is closed, and the activated carbon is poured onto the inner wall of the grid tube 304. Then the sealing plug 308 is plugged against the upper end of the grid tube 304.

[0037] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A multi-axis gantry welding machine, comprising a machine base (100), a support plate (200), a purification structure (300), a drainage structure (400) and a linkage structure (500), characterized in that: A multi-axis gantry (101) is arranged at the upper end of the machine base (100), a multi-degree-of-freedom welding robot (102) is arranged inside the multi-axis gantry (101), a sleeve (303) is installed through the inside of the support plate (200), a suction hood (307) sleeved on the outer side of the upper end of the multi-axis gantry (101) is arranged at the lower end of the sleeve (303), a first housing (301) and a second housing (401) are arranged at the upper end of the support plate (200), and a A grid cylinder (304), the outer wall of the grid cylinder (304) being provided with spiral blades (305), a hollow cavity (411) being provided inside the machine base (100), air holes (412) being distributed in a rectangular array and penetrating the cavity (411) being provided inside the upper end of the machine base (100), air supply boxes (405) being provided on the inner walls of both sides of the multi-axis gantry (101), and a nozzle (406) being installed penetratingly at the upper end of the air supply box (405) and being inclined toward the center of the suction hood (307); The linkage structure (500) comprises a motor (501) fixedly mounted on the upper end of the support plate (200); a rotating shaft (503) is provided at the output end of the motor (501); mounting shafts (506) are rotatably mounted inside the first housing (301) and the second housing (401); and impellers (507) are sleeved on the outer walls of the mounting shafts (506).

2. The multi-axis gantry welding machine according to claim 1, characterized in that: Vertical columns (201) are installed through the four corners of the suction hood (307), and the upper and lower ends of the vertical columns (201) are respectively connected to the support plate (200) and the multi-axis gantry (101).

3. The multi-axis gantry welding machine according to claim 1, characterized in that: The purification structure (300) comprises a top cover (306) located at the upper end of the sleeve (303) and having a ring shape, a hollow interior, and an inner wall sleeved on the outer wall of the grid tube (304). A suction pipe (302) penetrating the top cover (306) is provided at the suction end of the first housing (301).

4. The multi-axis gantry welding machine according to claim 3, characterized in that: A sealing plug (308) is provided inside the upper end of the grid cylinder (304), a downwardly inclined discharge pipe (310) is installed through the lower end of the grid cylinder (304), and a control valve is provided inside the discharge pipe (310).

5. The multi-axis gantry welding machine according to claim 1, characterized in that: The sides of the spiral blades (305) are connected to the inner wall of the sleeve (303), activated carbon is arranged inside the mesh tube (304), and a spiral flow channel (309) is arranged between the spiral blades (305).

6. The multi-axis gantry welding machine according to claim 1, characterized in that: The drainage structure (400) comprises a flow diversion box (403) fixedly mounted at the rear end of the suction hood (307), a mounting tube (409) fixedly mounted below the machine base (100), and flow diversion nozzles (410) installed through the interior of the upper end of the mounting tube (409) and the interior of the lower end of the machine base (100) and distributed at equal intervals.

7. The multi-axis gantry welding machine according to claim 6, characterized in that: A third air supply pipe (408) is installed through one end of the installation pipe (409), one end of the third air supply pipe (408) is installed through the inside of the diversion box (403), and a spiral hose (407) is connected through the middle end of the third air supply pipe (408).

8. The multi-axis gantry welding machine according to claim 1, characterized in that: The output end of the second housing (401) is provided with a first air supply pipe (402) penetrating the interior of the diverter box (403), and the lower end side of the diverter box (403) is provided with a second air supply pipe (404) which is installed through the air supply box (405).

9. The multi-axis gantry welding machine according to claim 6, characterized in that: Two groups of support legs (103) that are equidistantly distributed are provided at the lower end of the machine base (100), and the mounting tube (409) is located between the support legs (103).

10. The multi-axis gantry welding machine according to claim 3, characterized in that: The impellers (507) inside the first housing (301) and the second housing (401) face opposite directions, a worm wheel (502) is disposed at one end of the mounting shaft (506), a worm (504) meshing with the worm wheel (502) is sleeved on the outer wall of the rotating shaft (503), a bearing bracket (505) is disposed at the upper end of the support plate (200), and one end of the rotating shaft (503) is rotatably inserted into the interior of the bearing bracket (505).

Images