Jacking mechanism and detection device

Abstract

The utility model relates to a jacking mechanism and a detection device.The detection device comprises the detection mechanism and the jacking mechanism which are adjacently arranged, the jacking mechanism comprises a jacking assembly and a centering assembly, the jacking assembly comprises a bottom plate, first supporting plates and a first jacking cylinder, the first supporting plates are arranged above the bottom plate at intervals in the vertical direction, and the first jacking cylinder is arranged above the first supporting plates; the first jacking cylinder is arranged on the bottom plate and is in transmission connection with the first supporting plate; the centering assembly comprises a fixing plate and a fixing seat used for fixing a product, the fixing plate is connected to the first supporting plate, and the peripheral surface of the fixing seat is elastically connected to the fixing plate, so that the centering assembly has a self-centering function, and the coaxial position deviation of the product and the fixing seat can be greatly reduced; therefore, before the detection mechanism detects the transmission parameters of the transmission part of the product, the positioning precision of the fixed seat and the product can be greatly improved, so that the detection precision is improved, and the detection mechanism can be widely applied to the production of products of the same type.

Description

Technical Field

[0001] This application relates to the field of automotive electronic assembly technology, and in particular to a lifting mechanism and testing device. Background Technology

[0002] The differential is a crucial component of a car chassis. It's a mechanism that allows the left and right (or front and rear) drive wheels to rotate at different speeds. The quality of the differential not only determines the safety of the vehicle but also its driving comfort. In particular, poor clearance between the planetary gears and bevel gears in the differential can cause abnormal noises when cornering, affecting the driving experience and accelerating gear wear. Therefore, during differential assembly, it's necessary to inspect and confirm the differential's tooth flank clearance and axial clearance to determine if the assembly is up to standard.

[0003] When performing online testing of differential backlash and axial clearance, the differential needs to be positioned first before testing. The traditional method is to use a mask to press the differential together, but due to the unavoidable positional deviation between the mask and the differential, the test results are unstable. Utility Model Content

[0004] Based on this, the purpose of this application is to provide a lifting mechanism and a detection device including the lifting mechanism, so as to solve the problem of positional deviation between the differential and the faceplate when the differential is detected for tooth backlash and axial backlash in the prior art.

[0005] According to one aspect of this application, a lifting mechanism is provided, comprising:

[0006] A lifting assembly, comprising a base plate, a first lifting cylinder, and a first support plate, wherein the first support plate is disposed vertically above the base plate, and the first lifting cylinder is disposed on the base plate and is tractively connected to the first support plate;

[0007] A centering assembly, comprising a fixing plate and a fixing seat for fixing the product, wherein the fixing plate is connected to the first support plate and the outer peripheral surface of the fixing seat is elastically connected to the fixing plate.

[0008] In one embodiment, the first support plate is provided with a first adjustment plate, and the centering component is connected to the first adjustment plate. The first adjustment plate is used to adjust the position of the centering component in the horizontal direction.

[0009] In one embodiment, the first adjustment plate is provided with a second adjustment plate, and the centering component is disposed on the second adjustment plate, such that the first adjustment plate, the second adjustment plate and the centering component are stacked from bottom to top along the vertical direction;

[0010] The horizontal direction includes a first horizontal direction and a second horizontal direction that are perpendicular to each other. The first adjustment plate is used to adjust the position of the centering component in the first horizontal direction, and the second adjustment plate is used to adjust the position of the centering component in the second horizontal direction.

[0011] In one embodiment, the fixing plate is provided with a self-aligning bearing, the outer peripheral surface of the self-aligning bearing is connected to the fixing plate by an elastic element, and the self-aligning bearing is coaxially sleeved on the fixing seat, so that the outer peripheral surface of the fixing seat is elastically connected to the fixing plate.

[0012] In one embodiment, the lifting assembly further includes at least two sets of paired first guide components. Each set of first guide components includes two first guide shafts. Each first guide shaft passes through the base plate and is connected to the first support plate. The ends of the two first guide shafts away from the first support plate are connected to each other through a first connecting plate.

[0013] In one embodiment, the lifting assembly further includes a second lifting cylinder and a second support plate. The second lifting cylinder is disposed on the base plate and is tractively connected to the second support plate. The second support plate is spaced above the first support plate along the vertical direction. The fixing seat passes through the second support plate.

[0014] In one embodiment, the lifting assembly further includes at least two sets of paired second guide assemblies. Each set of second guide assemblies includes two second guide shafts. Each second guide shaft passes through the base plate and is connected to the second support plate. The ends of the two second guide shafts away from the second support plate are connected to each other through a second connecting plate.

[0015] In one embodiment, the centering component further includes a floating positioning pin disposed on the fixed plate and passing through the second support plate. The end of the floating positioning pin away from the fixed plate has a positioning part, which can generate a resettable displacement under the action of external force.

[0016] In one embodiment, the second support plate is provided with a plurality of tray positioning pins.

[0017] According to another aspect of this application, a detection device is provided, comprising a detection mechanism arranged adjacent to each other and a lifting mechanism as described in any of the above embodiments.

[0018] The aforementioned lifting mechanism and testing device, by incorporating a centering component within the lifting mechanism and elastically connecting the outer circumferential surface of the fixed seat within the centering component to the fixed plate, enable the centering component to possess a self-centering function. This significantly reduces the coaxial positional deviation between the product and the fixed seat. Consequently, before the testing mechanism detects the transmission parameters of the product's transmission components (e.g., before detecting the tooth flank clearance and axial clearance of the differential), it can greatly improve the positioning accuracy between the fixed seat and the product, thereby enhancing the testing accuracy. Consequently, it can be widely applied in the production of similar products. Attached Figure Description

[0019] Figure 1 A side view of a lifting mechanism provided in an embodiment of this application.

[0020] Figure 2 A side view of a lifting mechanism lifting a product under test, provided in an embodiment of this application.

[0021] Figure 3 This is an axonometric view of a lifting mechanism provided in an embodiment of this application without lifting the product under test.

[0022] Figure 4 This is an axonometric view of a portion of the structure in a lifting mechanism provided in an embodiment of this application.

[0023] Figure 5 This is an axonometric view of the centering component in a lifting mechanism provided in an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Lifting mechanism; 100. Lifting assembly; 110. Base plate; 120. First lifting cylinder; 130. First support plate; 140. Second lifting cylinder; 150. Second support plate; 151. Pallet positioning pin; 160. First guide assembly; 161. First guide shaft; 162. First connecting plate; 170. Second guide assembly; 171. Second guide shaft; 172. Second connecting plate; 173. Second buffer; 200. Centering assembly; 210. Fixing plate; 220. Fixing seat; 230. Self-aligning bearing; 240. Floating positioning pin; 241. Fixing part; 242. Positioning part; 300. First adjusting plate; 400. Second adjusting plate; 50. Product; 60. Pallet. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] This application provides a lifting mechanism and a testing device. The testing device includes an adjacent testing mechanism and a lifting mechanism, both located at a testing station. The testing mechanism is used to test the transmission parameters of the transmission components in the product to determine whether the product is assembled correctly, preventing abnormal product operation due to unqualified transmission parameters after leaving the factory, which would affect the user experience. The lifting mechanism is used to position the product before it is tested and lift it to a certain height for testing.

[0033] The following description uses an example of a lifting mechanism applied to a testing device for detecting the tooth flank clearance and axial clearance of a differential gear train to illustrate the structure of the lifting mechanism in this application. It is understood that in other embodiments, the lifting mechanism of this application is not limited to use only in testing devices, but can also be used in any mechanical equipment that requires lifting the product. Furthermore, the testing device of this application is not limited to a device for detecting the tooth flank clearance and axial clearance of a differential gear train, but can also be any testing device that requires lifting the product for testing purposes; no limitation is made here.

[0034] See Figure 1 , Figure 1 A schematic diagram of a lifting mechanism 10 provided in an embodiment of this application is shown. The lifting mechanism 10 provided in an embodiment of this application includes a lifting component 100 and a centering component 200 disposed on the lifting component 100. The lifting component 100 is used to support a product at a testing station, and the centering component 200 is used to position the product to eliminate coaxial deviation of the product.

[0035] Specifically, such as Figure 1 As shown, the lifting assembly 100 includes a base plate 110, a first lifting cylinder 120, and a first support plate 130. The first lifting cylinder 120 is mounted on the base plate 110 and is drively connected to the first support plate 130. The first support plate 130 is spaced above the base plate 110, and a centering assembly 200 is mounted on the first support plate 130. The first lifting cylinder 120 can drive the first support plate 130 and the centering assembly 200 to rise and fall together, enabling the centering assembly 200 to position the product 50. Preferably, the first lifting cylinder 120 has a self-locking function, which allows the first lifting cylinder 120 to lock its position when driving the first support plate 130 and the centering assembly 200 to a certain height, preventing the centering assembly 200 from changing its height after positioning the product 50.

[0036] Furthermore, in some cases, such as Figure 2 As shown, product 50 is placed on pallet 60, and the pallet 60 carrying product 50 is conveyed by a conveyor line to the inspection station. In order to first prevent pallet 60 from moving and to perform rough positioning, as an improvement to the above embodiment, such as Figure 2 and Figure 3 As shown, the lifting assembly 100 also includes a second lifting cylinder 140 and a second support plate 150. The second lifting cylinder 140 is mounted on the base plate 110 and is drively connected to the second support plate 150. The second support plate 150 is spaced above the first support plate 130, and the centering assembly 200 passes through the second support plate 150. Optionally, as shown... Figure 4 As shown, the second support plate 150 is also provided with a plurality of spaced tray positioning pins 151.

[0037] Thus, when the pallet 60 carrying product 50 arrives at the inspection station, the second lifting cylinder 140 can drive the second support plate 150 to rise vertically, thereby lifting the pallet 60 carrying product 50 and using the pallet positioning pin 151 on the second support plate 150 to initially position the pallet 60. Then, the first lifting cylinder 120 drives the first support plate 130 and the centering assembly 200 to rise vertically together, lifting the product 50 separately from the pallet 60 for precise positioning of the product 50.

[0038] Better, such as Figure 1 As shown, the first support plate 130 is also connected to the base plate 110 through the first guide assembly 160. The first guide assembly 160 includes two first guide shafts 161. Each first guide shaft 161 slides through the base plate 110 and is connected to the first support plate 130. The ends of the two first guide shafts 161 away from the first support plate 130 are connected to each other through the first connecting plate 162.

[0039] Similarly, as Figure 4 As shown, the second support plate 150 can also be connected to the base plate 110 via the second guide assembly 170. The second guide assembly 170 includes two second guide shafts 171. Each second guide shaft 171 slides through the base plate 110 and is connected to the second support plate 150. The ends of the two second guide shafts 171 away from the second support plate 150 are connected to each other via the second connecting plate 172.

[0040] In the embodiment shown in the figure, the first guide component 160 and the second guide component 170 each have two sets, with the two sets of first guide components 160 spaced apart and the two sets of second guide components 170 also spaced apart. Of course, the number of first guide components 160 and second guide components 170 is not limited; they can be even sets arranged in pairs. Thus, guided by the first guide components 160 and the second guide components 170, it can be ensured that the first support plate 130 and the second support plate 150 can only move vertically without deviation during lifting and lowering.

[0041] In some improved embodiments, a first buffer (not shown) is mounted on the first connecting plate 162. The first buffer is configured to abut against the bottom surface of the base plate 110 when the first support plate 130 rises relative to the base plate 110, thereby slowing down the rising speed of the first support plate 130 until the first support plate 130 stops, thus providing a cushioning effect. When the first support plate 130 is lifted to its highest position, it can prevent the first connecting plate 162 from violently impacting the base plate 110 and affecting the positioning of the product 50.

[0042] Similarly, a second buffer 173 can also be installed on the second connecting plate 172. The function of the second buffer 173 is the same as that of the first buffer, which is to provide a buffering effect. When the second support plate 150 rises relative to the base plate 110, it abuts against the bottom surface of the base plate 110 to slow down the rising speed of the second support plate 150 until the second support plate 150 stops, so that when the second support plate 150 is lifted to the highest position, the second connecting plate 172 can be prevented from violently colliding with the base plate 110.

[0043] Regarding the structure of the centering component 200, combined with Figure 2 and Figure 5As shown, in one embodiment, the centering assembly 200 includes a fixing plate 210 and a fixing seat 220 for fixing the product 50. The outer peripheral surface of the fixing seat 220 is elastically connected to the fixing plate 210. Specifically, a self-aligning bearing 230 is installed inside the fixing plate 210. The outer peripheral surface of the self-aligning bearing 230 is connected to the fixing plate 210 through multiple elastic elements, and the self-aligning bearing 230 is sleeved on the fixing seat 220, thereby making the outer peripheral surface of the fixing seat 220 elastically connected to the fixing plate 210. With the above arrangement, if there is a coaxial deviation between the product 50 and the fixing seat 220 before the product 50 is installed on the fixing seat 220, the self-aligning bearing 230 can drive the fixing seat 220 to self-adjust, so that the product 50 is coaxially sleeved on the fixing seat 220.

[0044] Furthermore, in order to assist the product 50 in coaxial positioning with the fixed base 220, the centering assembly 200 also includes a floating positioning pin 240 disposed on the fixed plate 210 and passing through the second support plate 150. The floating positioning pin 240 includes a fixing part 241 and a positioning part 242. One end of the fixing part 241 is connected to the fixed plate 210, and the positioning part 242 is elastically connected to the end of the fixing part 241 away from the fixed plate 210. The positioning part 242 can generate a resettable displacement in the vertical direction under the action of external force, so that when the fixed base 220 is connected to the product 50, the coaxial deviation between the product 50 and the fixed base 220 can be adjusted, thereby making it more conducive to assisting the product 50 to be coaxially fitted onto the fixed base 220.

[0045] Furthermore, please continue reading Figure 5 To pre-position the fixed base 220 in the horizontal direction, a first adjusting plate 300 is provided on the first support plate 130, and a second adjusting plate 400 is provided on the first adjusting plate 300. The fixing plate 210 of the centering assembly 200 is disposed on the second adjusting plate 400, so that the first adjusting plate 300, the second adjusting plate 400, and the fixing plate 210 are stacked from bottom to top in the vertical direction. Meanwhile, the horizontal direction includes a first horizontal direction and a second horizontal direction that are perpendicular to each other, i.e. Figure 5 In the embodiment shown in the figure, the X and Y directions are used to adjust the position of the centering component 200 in the first horizontal direction, and the second adjustment plate 400 is used to adjust the position of the centering component 200 in the second horizontal direction. Alternatively, the first adjustment plate 300 can adjust the position of the centering component 200 in the second horizontal direction, and the second adjustment plate 400 can adjust the position of the centering component 200 in the first horizontal direction; this is not limited to this embodiment.

[0046] Alternatively, in other embodiments, only the first adjustment plate 300 may be provided, and the fixing plate 210 of the centering component 200 may be directly provided on the first adjustment plate 300, so that the position of the centering component 200 in the horizontal direction can be adjusted by the first adjustment plate 300. That is, the first adjustment plate 300 can adjust the position of the centering component 200 in the first horizontal direction and / or the second horizontal direction, which can be specifically set as needed.

[0047] Thus, by setting the first adjustment plate 300 and the second adjustment plate 400, the position of the centering component 200 in the horizontal direction can be adjusted using the first adjustment plate 300 and the second adjustment plate 400 before the product 50 is conveyed on the conveyor line, making it easier to position the fixed seat 220 and the product 50 coaxially.

[0048] For the specific structure of the testing mechanism, please refer to the existing testing mechanism used to test the tooth backlash and axial clearance of the gear train in the differential. Moreover, since the lifting mechanism 10 can be applied to any testing device, the specific structure of the testing mechanism can also refer to any existing testing mechanism, so it will not be described in detail here.

[0049] The following is combined Figures 1 to 5 This paper describes the operation process of the lifting mechanism 10 provided in this application for lifting operations.

[0050] First, the pallet 60 carrying product 50 flows to the inspection station via the conveyor line. The second lifting cylinder 140 of the lifting component 100 drives the second support plate 150 to lift the pallet 60 to a certain height, and the pallet 60 is positioned by the pallet positioning pin 151.

[0051] Then, the first lifting cylinder 120 drives the first support plate 130 and the centering component 200 to lift the product 50 separately, so that it is separated from the pallet 60. After reaching a certain height, the first lifting cylinder 120 self-locks and positions the product 50 through the fixed seat 220 and the floating positioning pin 240.

[0052] Next, the testing agency tests product 50. After the test is completed, the testing agency resets, the first lifting cylinder 120 drives the first support plate 130 and the centering assembly 200 to reset, and the second lifting cylinder 140 drives the second support plate 150 to reset.

[0053] Finally, the conveyor line transports the pallet 60 carrying product 50 to the next station, and the subsequent lifting and measuring processes are repeated.

[0054] Therefore, the lifting mechanism 10 provided in this application, by setting a centering component 200 in the lifting mechanism 10 and elastically connecting the outer peripheral surface of the fixed seat 220 in the centering component 200 to the fixed plate 210, enables the centering component 200 to have a self-centering function, thereby greatly reducing the coaxial position deviation between the product 50 and the fixed seat 220. Therefore, before the detection mechanism detects the transmission parameters of the transmission components of the product 50 (e.g., before detecting the tooth backlash and axial clearance of the differential), it can greatly improve the positioning accuracy between the fixed seat 220 and the product 50, thereby improving the detection accuracy, and thus can be widely used in the production of similar products 50.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A jacking mechanism, characterized by, The utility model relates to a lifting device for product (50) and a lifting method of the same, and the lifting device comprises a lifting assembly (100) and a centering assembly (200), the lifting assembly (100) comprises a bottom plate (110), a first lifting cylinder (120) and a first support plate (130), the first support plate (130) is arranged above the bottom plate (110) in a vertical direction, and the first lifting cylinder (120) is arranged on the bottom plate (110) and is drivingly connected to the first support plate (130), the centering assembly (200) comprises a fixing plate (210) and a fixing seat (220) for fixing the product (50), the fixing plate (210) is connected to the first support plate (130), and the outer circumferential surface of the fixing seat (220) is elastically connected to the fixing plate (210). The first support plate (130) is provided with a first adjusting plate (300), the centering assembly (200) is connected to the first adjusting plate (300), and the first adjusting plate (300) is used for adjusting the position of the centering assembly (200) in a horizontal direction. The first adjusting plate (300) is provided with a second adjusting plate (400), and the centering assembly (200) is arranged on the second adjusting plate (400) so that the first adjusting plate (300), the second adjusting plate (400) and the centering assembly (200) are arranged in a vertical direction from bottom to top.

2. The jacking mechanism of claim 1, wherein The horizontal direction comprises a first horizontal direction and a second horizontal direction which are perpendicular to each other, the first adjusting plate (300) is used for adjusting the position of the centering assembly (200) in the first horizontal direction, and the second adjusting plate (400) is used for adjusting the position of the centering assembly (200) in the second horizontal direction.

3. The jacking mechanism of claim 2, wherein, The fixing plate (210) is provided with a centering bearing (230), the outer circumferential surface of the centering bearing (230) is connected to the fixing plate (210) through an elastic element, and the centering bearing (230) is coaxially sleeved on the fixing seat (220) so that the outer circumferential surface of the fixing seat (220) is elastically connected to the fixing plate (210). The lifting assembly (100) further comprises at least two groups of first guide assemblies (160) arranged in pairs, each group of the first guide assemblies (160) comprises two first guide shafts (161), each first guide shaft (161) is arranged on the bottom plate (110) and is connected to the first support plate (130), and the two first guide shafts (161) are connected to each other through a first connecting plate (162) at the ends away from the first support plate (130).

4. The jacking mechanism of claim 1, wherein The lifting assembly (100) further comprises a second lifting cylinder (140) and a second support plate (150), the second lifting cylinder (140) is arranged on the bottom plate (110) and is drivingly connected to the second support plate (150), the second support plate (150) is arranged above the first support plate (130) in the vertical direction, and the fixing seat (220) is arranged on the second support plate (150).

5. The jacking mechanism of claim 1, wherein ​ 6. The jacking mechanism of claim 1, wherein ​ 7. The jacking mechanism of claim 6, wherein, The jacking assembly (100) further comprises at least two sets of second guiding assemblies (170) arranged in pairs, each set of the second guiding assemblies (170) comprising two second guiding shafts (171), each of the second guiding shafts (171) penetrating through the bottom plate (110) and being connected to the second support plate (150), and the two second guiding shafts (171) being connected to each other by a second connecting plate (172) at an end away from the second support plate (150).

8. The jacking mechanism of claim 6, wherein, The centering assembly (200) further comprises a floating positioning pin (240) arranged on the fixed plate (210) and penetrating through the second support plate (150), the floating positioning pin (240) having a positioning portion (242) at an end away from the fixed plate (210), and the positioning portion (242) being capable of producing a resettable displacement under the action of an external force.

9. The jacking mechanism of claim 6, wherein, The second support plate (150) is provided with a plurality of tray positioning pins (151).

10. A detection device, characterized in that A jacking mechanism (10) as claimed in any one of claims 1-9, comprising adjacent detection means.

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