Air tightness detection device

Abstract

The invention discloses an air tightness detection device, and relates to the technical field of storage battery production detection devices. The device comprises a first conveying line, a second conveying line and a third conveying line which are sequentially arranged in the single direction, a first top plate supported by a first support is arranged on the first conveying line, the bottom side face of the first top plate is connected with a plurality of first telescopic cylinders, the ends of the first telescopic cylinders are connected with a movable plate, and at least one detection assembly is arranged on the movable plate; the detection assembly comprises a first detection head group and a second detection head group, and each of the first detection head group and the second detection head group comprises three detection heads arranged in parallel; when the first detection head group is connected with the negative pressure device, the second detection head group is connected with the positive pressure device. The first detection head set and the second detection head set are integrated through the detection assembly and can be connected with a negative pressure device and a positive pressure device respectively, and positive and negative pressure synchronous or alternate detection is supported; the first conveying line, the second conveying line and the third conveying line are sequentially arranged in the single direction, so that the storage batteries are continuously and automatically conveyed, and the production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of battery production testing equipment, and in particular relates to an airtightness testing device. Background Technology

[0002] Lead-acid batteries typically use plastic casings and covers, which are bonded together using a hot-melt process during manufacturing. To verify the bonding effectiveness, an airtightness test is required to check the battery's seal. Traditional airtightness testing methods involve either filling the battery with air through a sealed vent and measuring the leakage rate within a specified time, or drawing the battery to negative pressure through the sealed vent and measuring the leakage rate within a specified time. However, these methods cannot simultaneously perform positive and negative pressure tests, leading to potential missed or false positives. Summary of the Invention

[0003] The purpose of this invention is to provide an airtightness testing device that integrates a first detection head group and a second detection head group through a detection component. These components can be connected to negative pressure and positive pressure devices respectively, supporting synchronous or alternating detection of positive and negative pressure, thus solving the problems raised in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] This invention relates to an airtightness testing device, comprising a first conveyor line, a second conveyor line, and a third conveyor line arranged sequentially in a single direction. A top plate is supported by a bracket on the first conveyor line. A plurality of telescopic cylinders are connected to the bottom side of the top plate. A movable plate is connected to the end of each telescopic cylinder. At least one detection assembly is mounted on the movable plate. The detection assembly includes a detection head group one and a detection head group two, each comprising three detection heads arranged in parallel. When the detection head group one is connected to a negative pressure device, the detection head group two is connected to a positive pressure device. The end of the second conveyor line is provided with a plurality of baffle structures and a pushing structure for translating the battery along the conveying surface of the second conveyor line perpendicular to the conveying direction, blocked by the baffle structures. The number of baffle structures and detection assemblies is the same. A bearing platform is provided on one side of the second conveyor line, located directly below the pushing structure.

[0006] Furthermore, a second support is provided directly above the end of the second conveyor line, a second top plate is provided above the second support, a guide rail is provided on the bottom side of the second top plate, and a slider is provided on the guide rail; the pushing structure includes a telescopic push rod installed on one side of the second support, the end of the telescopic push rod is connected to one end of the slider; a movable push plate is connected to the bottom side of the slider.

[0007] Furthermore, the top of the second bracket is provided with an installation plate, and the material blocking structure includes a telescopic cylinder B installed on the bottom side of the installation plate. The output end of the telescopic cylinder B is connected to a hinge block, and the end of the hinge block is hinged to a swing arm through a hinge shaft one. A connecting rod is also hinged to the swing arm through a hinge shaft two. A hinge seat is fixed on the cylinder end face of the telescopic cylinder B, and the connecting rod is hinged to the hinge seat through a hinge shaft three. A stop block is provided at the end of the swing arm.

[0008] Furthermore, a positioning structure one and a positioning structure two are respectively provided on both sides of the first conveyor line located below the top plate one; the positioning structure one includes a side plate one fixed on the support one, and a side baffle is connected to one side of the side plate one through a connecting rod; the positioning structure two includes a side plate two fixed on the support one, a positioning cylinder is fixed to one side of the side plate two, a positioning plate is connected to the output end of the positioning cylinder, a guide rod one is provided on one side of the positioning plate, and a guide bearing one that cooperates with the guide rod one is provided on the side plate two.

[0009] Furthermore, a telescopic cylinder C is provided on the top plate, and a movable baffle is connected to the end of the telescopic cylinder C. Guide bearings II are also provided on the top plate on both sides of the telescopic cylinder C, and guide rods II that pass through the guide bearings II are connected to the movable baffles.

[0010] Furthermore, it also includes a three-way valve one and a three-way valve two; the three ends of the three-way valve one are respectively connected to a detection head assembly one, a straight-through solenoid valve one, and a pressure gauge one; the three ends of the three-way valve two are respectively connected to a detection head assembly two, a straight-through solenoid valve two, and a pressure gauge two; one end of the straight-through solenoid valve one is connected to one end of the three-way solenoid valve one, and one end of the straight-through solenoid valve two is connected to one end of the three-way solenoid valve two; the other two ends of the straight-through solenoid valve two are respectively connected to a negative pressure device and a positive pressure device; the other two ends of the three-way solenoid valve one are respectively connected to a negative pressure device and a positive pressure device.

[0011] Furthermore, the first straight-through solenoid valve, the first pressure gauge, the second straight-through solenoid valve, the second pressure gauge, the second three-way solenoid valve, and the first three-way solenoid valve are all installed on the top plate.

[0012] Furthermore, it also includes a control box fixed above the second bracket. The control box contains a control system consisting of a power supply, a controller, and an alarm. The control system is connected to the first conveyor line, the second conveyor line, the third conveyor line, the first telescopic cylinder, the first straight-through solenoid valve, the first pressure gauge, the second straight-through solenoid valve, the second pressure gauge, the second three-way solenoid valve, the first three-way solenoid valve, the negative pressure device, and the positive pressure device.

[0013] Furthermore, the detection heads of the first and second detection head groups are alternately arranged; the first and second conveyor lines are both installed on the first frame, and the support platform is installed on the second frame.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention integrates detection head group one and detection head group two through a detection component, which can be connected to negative pressure and positive pressure devices respectively, supporting synchronous or alternating detection of positive and negative pressure; and simultaneously, through the first conveyor line, the second conveyor line and the third conveyor line arranged in a single direction, continuous and automated conveying of batteries is realized, improving production efficiency; and with the cooperation of the baffle structure and the push structure, unqualified batteries are accurately moved to the carrying platform to realize automatic sorting.

[0016] 2. This invention achieves precise positioning of the battery through the synergistic effect of positioning structure one, positioning structure two, and movable baffle, ensuring accurate alignment of the detection head and the vent hole, thereby improving detection consistency and reliability.

[0017] 3. By coordinating the three-way valve 1, three-way valve 2, straight-through solenoid valve 1, straight-through solenoid valve 2, three-way solenoid valve 1, and three-way solenoid valve 2, rapid switching between detection head group 1, detection head group 2, and positive pressure device and negative pressure device can be achieved.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top-view structural diagram of the airtightness testing device of the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of a section at point B in the middle;

[0022] Figure 3 This is a side view of the airtightness testing device of the present invention;

[0023] Figure 4 This is a magnified view of section C in diagram 3;

[0024] Figure 5 This is a schematic diagram of the airtightness testing device of the present invention from a bottom-view perspective;

[0025] Figure 6 This is a schematic diagram of the battery structure of the present invention;

[0026] Figure 7 for Figure 5Enlarged view of a portion of point A in the middle;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1-Frame 1, 2-First Conveyor Line, 3-Second Conveyor Line, 4-Bearing Platform, 5-Control Box, 20-Bracket 1, 21-Top Plate 1, 22-Side Baffle, 23-Positioning Cylinder, 24-Positioning Plate, 25-Telescopic Cylinder C, 26-Telescopic Cylinder 1, 30-Bracket 2, 31-Top Plate 2, 32-Guide Rail, 33-Mounting Plate, 34-Telescopic Cylinder B, 35-Hinge Block, 36-Swing Arm, 37-Connecting Rod, 38-Stop Block, 40-Frame 2, 41-Telescopic Push Rod, 42-Modible Push Plate, 60-Partition, 61-Single Compartment 1, 62-Single Compartment 2 63-Single Compartment Three, 64-Single Compartment Four, 65-Single Compartment Five, 66-Single Compartment Six, 201-Side Plate One, 202-Connecting Rod, 203-Side Plate Two, 204-Guide Bearing One, 211-Pressure Gauge One, 212-Pressure Gauge Two, 221-Straight-Through Solenoid Valve One, 222-Straight-Through Solenoid Valve Two, 231-Three-Way Solenoid Valve One, 232-Three-Way Solenoid Valve Two, 251-Modible Baffle, 261-Modible Plate, 262-Detection Head, 321-Slider, 341-Hinge Seat, 343-Hinge Shaft Three, 361-Hinge Shaft One, 362-Hinge Shaft Two. Detailed Implementation

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

[0030] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0031] Example 1:

[0032] Please see Figure 1-6As shown, this invention is an airtightness testing device, including a first conveyor line 2, a second conveyor line 3 at the end of the first conveyor line 2, and a third conveyor line at the end of the second conveyor line 3. The conveying directions of the first conveyor line 2, the second conveyor line 3, and the third conveyor line are the same. A bracket 20 is installed on the first conveyor line 2, and a top plate 21 is installed on the top of the bracket 20. Six telescopic cylinders 26 are connected to the bottom side of the top plate 21. A movable plate 261 is connected to the end of the telescopic cylinders 26. Two detection components are installed on the movable plate 261. The detection components include a detection head group 1 and a detection head group 2. Both detection head group 1 and detection head group 2 include three detection heads 262 arranged in parallel. The detection heads 262 of detection head group 1 and detection head group 2 are arranged alternately. In use, twelve batteries 6 are fed onto the conveying surface of the first conveyor line 2. When the twelve batteries 6 move below the top plate 21, the telescopic cylinders 26 are extended to drive the detection heads 262 into the battery exhaust holes. At this time, positive and negative pressure detection operations are performed.

[0033] When the negative pressure device is activated by the first detection head group, the positive pressure device is activated by the second detection head group; that is, the positive and negative pressure are simultaneously detected during use; the battery 6 is equipped with five partitions 60, which divide the interior of the battery 6 into six independent cells; for example Figure 6 The six independent compartments are sequentially labeled as Compartment 1 (61), Compartment 2 (62), Compartment 3 (63), Compartment 4 (64), Compartment 5 (65), and Compartment 6 (66). During use, when positive pressure is applied to Compartments 1 (61), 3 (63), and 5 (65), negative pressure is applied to Compartments 2 (62), 4 (64), and 6 (66). After one positive or negative pressure test is completed, the control switch of detection head group 1 to the negative pressure device and detection head group 2 to the positive pressure device. At this time, negative pressure is applied to Compartments 1 (61), 3 (63), and 5 (65), while simultaneously applying negative pressure to Compartments 2 (62), 4 (64), and 6 (66). 64. Perform positive pressure testing on single cell 66; use alternating negative and positive pressure testing; when performing positive pressure testing on single cell 1 61, single cell 3 63, and single cell 5 65, internal leakage can be measured, that is, whether gas in single cell 1 61, single cell 3 63, and single cell 5 65 leaks into single cell 2 62, single cell 4 64, and single cell 66; when performing positive pressure testing on single cell 2 62, single cell 4 64, and single cell 66 66, internal leakage can be measured, that is, whether gas in single cell 2 62, single cell 4 64, and single cell 66 leaks into single cell 1 61, single cell 3 63, and single cell 5 65;

[0034] Based on the above, in order to switch between positive pressure detection and negative pressure detection during use, three-way valve one and three-way valve two are also provided. The three ends of three-way valve one are respectively connected to detection head group one, straight-through solenoid valve one 221 and pressure gauge one 211. The three ends of three-way valve two are respectively connected to detection head group two, straight-through solenoid valve two 222 and pressure gauge two 212. Furthermore, straight-through solenoid valve one 221 is connected to the negative pressure device and the positive pressure device through three-way solenoid valve one 231. Straight-through solenoid valve two 222 is connected to the negative pressure device and the positive pressure device through three-way solenoid valve two 232.

[0035] Specifically, such as Figure 1-2 The aforementioned straight-through solenoid valve 221, pressure gauge 211, straight-through solenoid valve 222, pressure gauge 212, three-way solenoid valve 232, and three-way solenoid valve 231 are all installed on the top plate 21.

[0036] Example 2;

[0037] Based on Example 1, to facilitate the positioning of a group of twelve batteries 6 transported on the first conveyor line 2, and to facilitate the use of a telescopic cylinder 26 to extend and drive the detection head 262 to accurately insert into the battery vent hole, positioning structure 1 and positioning structure 2 are respectively provided on both sides of the first conveyor line 2 located below the top plate 21, and positioning structure 3 is provided at the end of the first conveyor line 2; positioning structure 3 includes a telescopic cylinder C25 installed on the top plate 21, and a movable baffle 251 is connected to the end of the telescopic cylinder C25; positioning structure 1 includes a side plate 201 fixed on the bracket 20, the side plate 201 is fixed to ... One side of plate 201 is connected to side baffle 22 via connecting rod 202; positioning structure 2 includes side plate 203 fixed on bracket 20, and a positioning cylinder 23 is fixed on one side of side plate 203. The output end of positioning cylinder 23 is connected to positioning plate 24; that is, in use, when a group of twelve batteries 6 moves into the area composed of positioning structure 1, positioning structure 2 and positioning structure 3, the twelve batteries 6 first abut against positioning structure 3, and then the positioning cylinder 23 is controlled to extend and drive the twelve batteries 6 to move towards the side closer to side baffle 22, thereby completing the positioning of a group of twelve batteries 6.

[0038] Specifically, a guide rod is provided on one side of the positioning plate 24, and a guide bearing 204 that cooperates with the guide rod is provided on the side plate 203; and guide bearings are also provided on the top plate 21 located on both sides of the telescopic cylinder C25, and a guide rod 2 that passes through the guide bearing is connected to the movable baffle 251.

[0039] In Example 3, based on Example 1 or Example 2, after completing the positive and negative voltage tests on twelve batteries 6, in order to facilitate the removal of unqualified batteries 6, several baffle structures are provided at the end of the second conveyor line 3, and a support platform 4 located on one side of the second conveyor line 3 is provided to push the batteries 6 blocked by the baffle structures along the conveying direction perpendicular to the second conveyor line 3. The support platform 4 is located directly below the pushing structure. In use, the pushing structure controls the batteries 6 to move horizontally on the conveying surface of the second conveyor line 3; and the number and position of the baffle structures and the testing components are compatible; the first conveyor line 2 and the second conveyor line 3 are both installed on frame 1, and the support platform 4 is installed on frame 40.

[0040] Specifically, such as Figure 7 A support 30 is installed directly above the end of the second conveyor line 3. A top plate 31 is installed above the support 30. A guide rail 32 is installed on the bottom side of the top plate 31. A slider 321 is installed on the guide rail 32. The pushing structure includes a telescopic push rod 41 installed on one side of the support 30. The end of the telescopic push rod 41 is connected to one end of the slider 321. A movable push plate 42 is connected to the bottom side of the slider 321.

[0041] Specifically, such as Figure 7 A mounting plate 33 is provided on the top of the bracket 2 30. The material blocking structure includes a telescopic cylinder B34 installed on the bottom side of the mounting plate 33. The output end of the telescopic cylinder B34 is connected to a hinge block 35. The end of the hinge block 35 is hinged to a swing arm 36 via a hinge shaft 1 361. A connecting rod 37 is also hinged to the swing arm 36 via a hinge shaft 2 362. A hinge seat 341 is fixed on the cylinder end face of the telescopic cylinder B34. The connecting rod 37 is hinged to the hinge seat 341 via a hinge shaft 343. A stop block 38 is provided at the end of the swing arm 36.

[0042] In other words, during use, when a battery 6 is determined to be unqualified after the positive and negative pressure tests are completed on the first conveyor line 2, the telescopic cylinder B34 corresponding to the battery 6 is controlled. The hinge block 35 and the connecting rod 37 are used to drive the swing arm 36 to move towards the conveying surface of the second conveyor line 3. At this time, the swing arm 36 is vertical. That is, the stop block 38 set at the end of the swing arm 36 blocks the unqualified battery 6 located on the second conveyor line 3, preventing the unqualified battery 6 from being conveyed to the third conveyor line under the action of the second conveyor line 3. When other qualified batteries 6 are conveyed to the third conveyor line, the unqualified battery 6 is pushed onto the bearing platform 4 by the pushing structure. After the operation is completed, the pushing structure and the blocking structure are controlled to return to the initial state.

[0043] To achieve automated production, a control box 5 is also included, fixed above the support frame 2 30. The control box 5 contains a control system consisting of a power supply, a controller, and an alarm. The control system is connected to the first conveyor line 2, the second conveyor line 3, the third conveyor line, the telescopic cylinder 1 26, the straight-through solenoid valve 1 221, the pressure gauge 1 211, the straight-through solenoid valve 2 222, the pressure gauge 2 212, the three-way solenoid valve 2 232 and the three-way solenoid valve 1 231, the negative pressure device, and the positive pressure device. During the entire testing process, the pressure gauge 1 211 and the pressure gauge 2 212 monitor the pressure changes inside the battery 6 in real time. The control system automatically determines whether the airtightness between each cell of each battery is qualified based on the preset pressure holding time and pressure decay value, and thus determines whether the battery 6 is qualified.

[0044] During operation, the control system coordinates the actions of all conveyor lines, cylinders, solenoid valves, and sensors to achieve fully automated cyclic operation. If a fault or abnormal pressure is detected, an alarm will sound, prompting the operator to take action.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An airtightness testing device, characterized in that: It includes a first conveyor line (2), a second conveyor line (3), and a third conveyor line arranged sequentially in a single direction; The first conveyor line (2) is provided with a top plate (21) supported by a bracket (20). Several telescopic cylinders (26) are connected to the bottom side of the top plate (21). A movable plate (261) is connected to the end of the telescopic cylinder (26). At least one detection component is provided on the movable plate (261). The detection component includes a detection head group one and a detection head group two. Both the detection head group one and the detection head group two include three detection heads (262) arranged in parallel. When the first detection head assembly is connected to the negative pressure device, the second detection head assembly is connected to the positive pressure device; The end of the second conveyor line (3) is provided with a plurality of baffle structures and a push structure for translating the battery under the baffle structure along the conveying direction perpendicular to the second conveyor line (3) on the conveying surface of the second conveyor line (3); The number of the material blocking structure and the detection components are the same; A carrying platform (4) is provided on one side of the second conveyor line (3), and the carrying platform (4) is located directly below the pushing structure.

2. The airtightness testing device according to claim 1, characterized in that, A second support (30) is provided directly above the end of the second conveyor line (3). A second top plate (31) is provided above the second support (30). A guide rail (32) is provided on the bottom side of the second top plate (31). A slider (321) is provided on the guide rail (32). The pushing structure includes a telescopic push rod (41) installed on one side of the bracket (30), and the end of the telescopic push rod (41) is connected to one end of the slider (321); The bottom side of the slider (321) is connected to the movable push plate (42).

3. The airtightness testing device according to claim 2, characterized in that, The top of the bracket (30) is provided with an installation plate (33), and the material blocking structure includes a telescopic cylinder B (34) installed on the bottom side of the installation plate (33). The output end of the telescopic cylinder B (34) is connected to a hinge block (35), and the end of the hinge block (35) is hinged to a swing arm (36) through a hinge shaft (361). A connecting rod (37) is also hinged to the swing arm (36) via hinge shaft two (362). A hinge seat (341) is fixed on the cylinder end face of the telescopic cylinder B (34). The connecting rod (37) is hinged to the hinge seat (341) via hinge shaft three (343). A stop (38) is provided at the end of the swing arm (36).

4. The airtightness testing device according to claim 1, characterized in that, Positioning structure one and positioning structure two are respectively provided on both sides of the first conveyor line (2) located below the top plate (21); The positioning structure includes a side plate (201) fixed on a bracket (20), and one side of the side plate (201) is connected to a side baffle (22) via a connecting rod (202); The second positioning structure includes a second side plate (203) fixed on a first bracket (20). A positioning cylinder (23) is fixed on one side of the second side plate (203). The output end of the positioning cylinder (23) is connected to a positioning plate (24). A first guide rod is provided on one side of the positioning plate (24). A first guide bearing (204) that cooperates with the first guide rod is provided on the second side plate (203).

5. The airtightness testing device according to claim 4, characterized in that, A telescopic cylinder C (25) is provided on the top plate (21). A movable baffle (251) is connected to the end of the telescopic cylinder C (25). Guide bearings are also provided on the top plate (21) on both sides of the telescopic cylinder C (25). A guide rod 2 that passes through the guide bearing 2 is connected to the movable baffle (251).

6. The airtightness testing device according to claim 1, characterized in that, It also includes three-way connector 1 and three-way connector 2; Among them, the three ends of the three-way valve are respectively connected to the detection head assembly, the straight-through solenoid valve (221) and the pressure gauge (211); The three ends of the three-way valve are respectively connected to the detection head assembly 2, the straight-through solenoid valve 2 (222) and the pressure gauge 2 (212); One end of the first straight-through solenoid valve (221) is connected to one end of the first three-way solenoid valve (231), and one end of the second straight-through solenoid valve (222) is connected to one end of the second three-way solenoid valve (232); the other two ends of the second straight-through solenoid valve (222) are respectively connected to the negative pressure device and the positive pressure device; the other two ends of the first three-way solenoid valve (231) are respectively connected to the negative pressure device and the positive pressure device.

7. The airtightness testing device according to claim 6, characterized in that, The first straight-through solenoid valve (221), the first pressure gauge (211), the second straight-through solenoid valve (222), the second pressure gauge (212), the second three-way solenoid valve (232), and the first three-way solenoid valve (231) are all installed on the top plate (21).

8. The airtightness testing device according to claim 7, characterized in that, It also includes a control box (5) fixed above the bracket (30). The control box (5) is equipped with a control system consisting of a power supply, a controller and an alarm. The control system is connected to the first conveyor line (2), the second conveyor line (3), the third conveyor line, the first telescopic cylinder (26), the first straight-through solenoid valve (221), the first pressure gauge (211), the second straight-through solenoid valve (222), the second pressure gauge (212), the second three-way solenoid valve (232) and the first three-way solenoid valve (231), the negative pressure device and the positive pressure device.

9. The airtightness testing device according to claim 1, characterized in that, The detection heads (262) of the first and second detection head groups are alternately arranged.

10. The airtightness testing device according to claim 1, characterized in that, The first conveyor line (2) and the second conveyor line (3) are both installed on frame one (1), and the bearing platform (4) is installed on frame two (40).

Images